diff options
| author | Daniel Schmitzer <noreply@maennchen1.de> | 2021-01-22 07:53:33 +0000 |
|---|---|---|
| committer | Daniel Schmitzer <noreply@maennchen1.de> | 2021-01-22 07:53:33 +0000 |
| commit | 4eb159da9b6d9463c31cf5c6a452a05259add785 (patch) | |
| tree | b24388d8d593102327edce0790ce168a2c2cc6dc /views/js | |
| parent | d75554fdc6126617502f4b04f20c7e18057e8bf4 (diff) | |
#4.2.10
- Feature: Abo Modul überarbeitet (Abos je Produkt / Vorverlängerungsaktionen)
- Feature: Mehrzeilige Produktvariablen
- Feature: Mehrere Tempaltes für Downloadplus PDF Anpassungen
- Feature: Zentrale Dokumente für Downloadplus
- Feature: Template je Variante für Downloadplus anpassbar
- Feature: parallele Erstellung eines Dokumentes ohne Vorlage (Briefbogenfunktion)
git-svn-id: https://[internal]/wordpress/plugins/wpsg4@7824 0d5edaf7-2b12-4e95-93f4-047927463d4b
Diffstat (limited to 'views/js')
| -rw-r--r-- | views/js/vue3.js | 13655 |
1 files changed, 13655 insertions, 0 deletions
diff --git a/views/js/vue3.js b/views/js/vue3.js new file mode 100644 index 0000000..b947cad --- /dev/null +++ b/views/js/vue3.js @@ -0,0 +1,13655 @@ +var Vue = (function (exports) {
+ 'use strict';
+
+ /**
+ * Make a map and return a function for checking if a key
+ * is in that map.
+ * IMPORTANT: all calls of this function must be prefixed with
+ * \/\*#\_\_PURE\_\_\*\/
+ * So that rollup can tree-shake them if necessary.
+ */
+ function makeMap(str, expectsLowerCase) {
+ const map = Object.create(null);
+ const list = str.split(',');
+ for (let i = 0; i < list.length; i++) {
+ map[list[i]] = true;
+ }
+ return expectsLowerCase ? val => !!map[val.toLowerCase()] : val => !!map[val];
+ }
+
+ /**
+ * dev only flag -> name mapping
+ */
+ const PatchFlagNames = {
+ [1 /* TEXT */]: `TEXT`,
+ [2 /* CLASS */]: `CLASS`,
+ [4 /* STYLE */]: `STYLE`,
+ [8 /* PROPS */]: `PROPS`,
+ [16 /* FULL_PROPS */]: `FULL_PROPS`,
+ [32 /* HYDRATE_EVENTS */]: `HYDRATE_EVENTS`,
+ [64 /* STABLE_FRAGMENT */]: `STABLE_FRAGMENT`,
+ [128 /* KEYED_FRAGMENT */]: `KEYED_FRAGMENT`,
+ [256 /* UNKEYED_FRAGMENT */]: `UNKEYED_FRAGMENT`,
+ [512 /* NEED_PATCH */]: `NEED_PATCH`,
+ [1024 /* DYNAMIC_SLOTS */]: `DYNAMIC_SLOTS`,
+ [2048 /* DEV_ROOT_FRAGMENT */]: `DEV_ROOT_FRAGMENT`,
+ [-1 /* HOISTED */]: `HOISTED`,
+ [-2 /* BAIL */]: `BAIL`
+ };
+
+ /**
+ * Dev only
+ */
+ const slotFlagsText = {
+ [1 /* STABLE */]: 'STABLE',
+ [2 /* DYNAMIC */]: 'DYNAMIC',
+ [3 /* FORWARDED */]: 'FORWARDED'
+ };
+
+ const GLOBALS_WHITE_LISTED = 'Infinity,undefined,NaN,isFinite,isNaN,parseFloat,parseInt,decodeURI,' +
+ 'decodeURIComponent,encodeURI,encodeURIComponent,Math,Number,Date,Array,' +
+ 'Object,Boolean,String,RegExp,Map,Set,JSON,Intl';
+ const isGloballyWhitelisted = /*#__PURE__*/ makeMap(GLOBALS_WHITE_LISTED);
+
+ const range = 2;
+ function generateCodeFrame(source, start = 0, end = source.length) {
+ const lines = source.split(/\r?\n/);
+ let count = 0;
+ const res = [];
+ for (let i = 0; i < lines.length; i++) {
+ count += lines[i].length + 1;
+ if (count >= start) {
+ for (let j = i - range; j <= i + range || end > count; j++) {
+ if (j < 0 || j >= lines.length)
+ continue;
+ const line = j + 1;
+ res.push(`${line}${' '.repeat(Math.max(3 - String(line).length, 0))}| ${lines[j]}`);
+ const lineLength = lines[j].length;
+ if (j === i) {
+ // push underline
+ const pad = start - (count - lineLength) + 1;
+ const length = Math.max(1, end > count ? lineLength - pad : end - start);
+ res.push(` | ` + ' '.repeat(pad) + '^'.repeat(length));
+ }
+ else if (j > i) {
+ if (end > count) {
+ const length = Math.max(Math.min(end - count, lineLength), 1);
+ res.push(` | ` + '^'.repeat(length));
+ }
+ count += lineLength + 1;
+ }
+ }
+ break;
+ }
+ }
+ return res.join('\n');
+ }
+
+ /**
+ * On the client we only need to offer special cases for boolean attributes that
+ * have different names from their corresponding dom properties:
+ * - itemscope -> N/A
+ * - allowfullscreen -> allowFullscreen
+ * - formnovalidate -> formNoValidate
+ * - ismap -> isMap
+ * - nomodule -> noModule
+ * - novalidate -> noValidate
+ * - readonly -> readOnly
+ */
+ const specialBooleanAttrs = `itemscope,allowfullscreen,formnovalidate,ismap,nomodule,novalidate,readonly`;
+ const isSpecialBooleanAttr = /*#__PURE__*/ makeMap(specialBooleanAttrs);
+
+ function normalizeStyle(value) {
+ if (isArray(value)) {
+ const res = {};
+ for (let i = 0; i < value.length; i++) {
+ const item = value[i];
+ const normalized = normalizeStyle(isString(item) ? parseStringStyle(item) : item);
+ if (normalized) {
+ for (const key in normalized) {
+ res[key] = normalized[key];
+ }
+ }
+ }
+ return res;
+ }
+ else if (isObject(value)) {
+ return value;
+ }
+ }
+ const listDelimiterRE = /;(?![^(]*\))/g;
+ const propertyDelimiterRE = /:(.+)/;
+ function parseStringStyle(cssText) {
+ const ret = {};
+ cssText.split(listDelimiterRE).forEach(item => {
+ if (item) {
+ const tmp = item.split(propertyDelimiterRE);
+ tmp.length > 1 && (ret[tmp[0].trim()] = tmp[1].trim());
+ }
+ });
+ return ret;
+ }
+ function normalizeClass(value) {
+ let res = '';
+ if (isString(value)) {
+ res = value;
+ }
+ else if (isArray(value)) {
+ for (let i = 0; i < value.length; i++) {
+ res += normalizeClass(value[i]) + ' ';
+ }
+ }
+ else if (isObject(value)) {
+ for (const name in value) {
+ if (value[name]) {
+ res += name + ' ';
+ }
+ }
+ }
+ return res.trim();
+ }
+
+ // These tag configs are shared between compiler-dom and runtime-dom, so they
+ // https://developer.mozilla.org/en-US/docs/Web/HTML/Element
+ const HTML_TAGS = 'html,body,base,head,link,meta,style,title,address,article,aside,footer,' +
+ 'header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,div,dd,dl,dt,figcaption,' +
+ 'figure,picture,hr,img,li,main,ol,p,pre,ul,a,b,abbr,bdi,bdo,br,cite,code,' +
+ 'data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,s,samp,small,span,strong,sub,sup,' +
+ 'time,u,var,wbr,area,audio,map,track,video,embed,object,param,source,' +
+ 'canvas,script,noscript,del,ins,caption,col,colgroup,table,thead,tbody,td,' +
+ 'th,tr,button,datalist,fieldset,form,input,label,legend,meter,optgroup,' +
+ 'option,output,progress,select,textarea,details,dialog,menu,' +
+ 'summary,template,blockquote,iframe,tfoot';
+ // https://developer.mozilla.org/en-US/docs/Web/SVG/Element
+ const SVG_TAGS = 'svg,animate,animateMotion,animateTransform,circle,clipPath,color-profile,' +
+ 'defs,desc,discard,ellipse,feBlend,feColorMatrix,feComponentTransfer,' +
+ 'feComposite,feConvolveMatrix,feDiffuseLighting,feDisplacementMap,' +
+ 'feDistanceLight,feDropShadow,feFlood,feFuncA,feFuncB,feFuncG,feFuncR,' +
+ 'feGaussianBlur,feImage,feMerge,feMergeNode,feMorphology,feOffset,' +
+ 'fePointLight,feSpecularLighting,feSpotLight,feTile,feTurbulence,filter,' +
+ 'foreignObject,g,hatch,hatchpath,image,line,linearGradient,marker,mask,' +
+ 'mesh,meshgradient,meshpatch,meshrow,metadata,mpath,path,pattern,' +
+ 'polygon,polyline,radialGradient,rect,set,solidcolor,stop,switch,symbol,' +
+ 'text,textPath,title,tspan,unknown,use,view';
+ const VOID_TAGS = 'area,base,br,col,embed,hr,img,input,link,meta,param,source,track,wbr';
+ const isHTMLTag = /*#__PURE__*/ makeMap(HTML_TAGS);
+ const isSVGTag = /*#__PURE__*/ makeMap(SVG_TAGS);
+ const isVoidTag = /*#__PURE__*/ makeMap(VOID_TAGS);
+
+ function looseCompareArrays(a, b) {
+ if (a.length !== b.length)
+ return false;
+ let equal = true;
+ for (let i = 0; equal && i < a.length; i++) {
+ equal = looseEqual(a[i], b[i]);
+ }
+ return equal;
+ }
+ function looseEqual(a, b) {
+ if (a === b)
+ return true;
+ let aValidType = isDate(a);
+ let bValidType = isDate(b);
+ if (aValidType || bValidType) {
+ return aValidType && bValidType ? a.getTime() === b.getTime() : false;
+ }
+ aValidType = isArray(a);
+ bValidType = isArray(b);
+ if (aValidType || bValidType) {
+ return aValidType && bValidType ? looseCompareArrays(a, b) : false;
+ }
+ aValidType = isObject(a);
+ bValidType = isObject(b);
+ if (aValidType || bValidType) {
+ /* istanbul ignore if: this if will probably never be called */
+ if (!aValidType || !bValidType) {
+ return false;
+ }
+ const aKeysCount = Object.keys(a).length;
+ const bKeysCount = Object.keys(b).length;
+ if (aKeysCount !== bKeysCount) {
+ return false;
+ }
+ for (const key in a) {
+ const aHasKey = a.hasOwnProperty(key);
+ const bHasKey = b.hasOwnProperty(key);
+ if ((aHasKey && !bHasKey) ||
+ (!aHasKey && bHasKey) ||
+ !looseEqual(a[key], b[key])) {
+ return false;
+ }
+ }
+ }
+ return String(a) === String(b);
+ }
+ function looseIndexOf(arr, val) {
+ return arr.findIndex(item => looseEqual(item, val));
+ }
+
+ /**
+ * For converting {{ interpolation }} values to displayed strings.
+ * @private
+ */
+ const toDisplayString = (val) => {
+ return val == null
+ ? ''
+ : isObject(val)
+ ? JSON.stringify(val, replacer, 2)
+ : String(val);
+ };
+ const replacer = (_key, val) => {
+ if (isMap(val)) {
+ return {
+ [`Map(${val.size})`]: [...val.entries()].reduce((entries, [key, val]) => {
+ entries[`${key} =>`] = val;
+ return entries;
+ }, {})
+ };
+ }
+ else if (isSet(val)) {
+ return {
+ [`Set(${val.size})`]: [...val.values()]
+ };
+ }
+ else if (isObject(val) && !isArray(val) && !isPlainObject(val)) {
+ return String(val);
+ }
+ return val;
+ };
+
+ const EMPTY_OBJ = Object.freeze({})
+ ;
+ const EMPTY_ARR = Object.freeze([]) ;
+ const NOOP = () => { };
+ /**
+ * Always return false.
+ */
+ const NO = () => false;
+ const onRE = /^on[^a-z]/;
+ const isOn = (key) => onRE.test(key);
+ const isModelListener = (key) => key.startsWith('onUpdate:');
+ const extend = Object.assign;
+ const remove = (arr, el) => {
+ const i = arr.indexOf(el);
+ if (i > -1) {
+ arr.splice(i, 1);
+ }
+ };
+ const hasOwnProperty = Object.prototype.hasOwnProperty;
+ const hasOwn = (val, key) => hasOwnProperty.call(val, key);
+ const isArray = Array.isArray;
+ const isMap = (val) => toTypeString(val) === '[object Map]';
+ const isSet = (val) => toTypeString(val) === '[object Set]';
+ const isDate = (val) => val instanceof Date;
+ const isFunction = (val) => typeof val === 'function';
+ const isString = (val) => typeof val === 'string';
+ const isSymbol = (val) => typeof val === 'symbol';
+ const isObject = (val) => val !== null && typeof val === 'object';
+ const isPromise = (val) => {
+ return isObject(val) && isFunction(val.then) && isFunction(val.catch);
+ };
+ const objectToString = Object.prototype.toString;
+ const toTypeString = (value) => objectToString.call(value);
+ const toRawType = (value) => {
+ // extract "RawType" from strings like "[object RawType]"
+ return toTypeString(value).slice(8, -1);
+ };
+ const isPlainObject = (val) => toTypeString(val) === '[object Object]';
+ const isIntegerKey = (key) => isString(key) &&
+ key !== 'NaN' &&
+ key[0] !== '-' &&
+ '' + parseInt(key, 10) === key;
+ const isReservedProp = /*#__PURE__*/ makeMap(
+ // the leading comma is intentional so empty string "" is also included
+ ',key,ref,' +
+ 'onVnodeBeforeMount,onVnodeMounted,' +
+ 'onVnodeBeforeUpdate,onVnodeUpdated,' +
+ 'onVnodeBeforeUnmount,onVnodeUnmounted');
+ const cacheStringFunction = (fn) => {
+ const cache = Object.create(null);
+ return ((str) => {
+ const hit = cache[str];
+ return hit || (cache[str] = fn(str));
+ });
+ };
+ const camelizeRE = /-(\w)/g;
+ /**
+ * @private
+ */
+ const camelize = cacheStringFunction((str) => {
+ return str.replace(camelizeRE, (_, c) => (c ? c.toUpperCase() : ''));
+ });
+ const hyphenateRE = /\B([A-Z])/g;
+ /**
+ * @private
+ */
+ const hyphenate = cacheStringFunction((str) => str.replace(hyphenateRE, '-$1').toLowerCase());
+ /**
+ * @private
+ */
+ const capitalize = cacheStringFunction((str) => str.charAt(0).toUpperCase() + str.slice(1));
+ /**
+ * @private
+ */
+ const toHandlerKey = cacheStringFunction((str) => (str ? `on${capitalize(str)}` : ``));
+ // compare whether a value has changed, accounting for NaN.
+ const hasChanged = (value, oldValue) => value !== oldValue && (value === value || oldValue === oldValue);
+ const invokeArrayFns = (fns, arg) => {
+ for (let i = 0; i < fns.length; i++) {
+ fns[i](arg);
+ }
+ };
+ const def = (obj, key, value) => {
+ Object.defineProperty(obj, key, {
+ configurable: true,
+ enumerable: false,
+ value
+ });
+ };
+ const toNumber = (val) => {
+ const n = parseFloat(val);
+ return isNaN(n) ? val : n;
+ };
+ let _globalThis;
+ const getGlobalThis = () => {
+ return (_globalThis ||
+ (_globalThis =
+ typeof globalThis !== 'undefined'
+ ? globalThis
+ : typeof self !== 'undefined'
+ ? self
+ : typeof window !== 'undefined'
+ ? window
+ : typeof global !== 'undefined'
+ ? global
+ : {}));
+ };
+
+ const targetMap = new WeakMap();
+ const effectStack = [];
+ let activeEffect;
+ const ITERATE_KEY = Symbol( 'iterate' );
+ const MAP_KEY_ITERATE_KEY = Symbol( 'Map key iterate' );
+ function isEffect(fn) {
+ return fn && fn._isEffect === true;
+ }
+ function effect(fn, options = EMPTY_OBJ) {
+ if (isEffect(fn)) {
+ fn = fn.raw;
+ }
+ const effect = createReactiveEffect(fn, options);
+ if (!options.lazy) {
+ effect();
+ }
+ return effect;
+ }
+ function stop(effect) {
+ if (effect.active) {
+ cleanup(effect);
+ if (effect.options.onStop) {
+ effect.options.onStop();
+ }
+ effect.active = false;
+ }
+ }
+ let uid = 0;
+ function createReactiveEffect(fn, options) {
+ const effect = function reactiveEffect() {
+ if (!effect.active) {
+ return options.scheduler ? undefined : fn();
+ }
+ if (!effectStack.includes(effect)) {
+ cleanup(effect);
+ try {
+ enableTracking();
+ effectStack.push(effect);
+ activeEffect = effect;
+ return fn();
+ }
+ finally {
+ effectStack.pop();
+ resetTracking();
+ activeEffect = effectStack[effectStack.length - 1];
+ }
+ }
+ };
+ effect.id = uid++;
+ effect.allowRecurse = !!options.allowRecurse;
+ effect._isEffect = true;
+ effect.active = true;
+ effect.raw = fn;
+ effect.deps = [];
+ effect.options = options;
+ return effect;
+ }
+ function cleanup(effect) {
+ const { deps } = effect;
+ if (deps.length) {
+ for (let i = 0; i < deps.length; i++) {
+ deps[i].delete(effect);
+ }
+ deps.length = 0;
+ }
+ }
+ let shouldTrack = true;
+ const trackStack = [];
+ function pauseTracking() {
+ trackStack.push(shouldTrack);
+ shouldTrack = false;
+ }
+ function enableTracking() {
+ trackStack.push(shouldTrack);
+ shouldTrack = true;
+ }
+ function resetTracking() {
+ const last = trackStack.pop();
+ shouldTrack = last === undefined ? true : last;
+ }
+ function track(target, type, key) {
+ if (!shouldTrack || activeEffect === undefined) {
+ return;
+ }
+ let depsMap = targetMap.get(target);
+ if (!depsMap) {
+ targetMap.set(target, (depsMap = new Map()));
+ }
+ let dep = depsMap.get(key);
+ if (!dep) {
+ depsMap.set(key, (dep = new Set()));
+ }
+ if (!dep.has(activeEffect)) {
+ dep.add(activeEffect);
+ activeEffect.deps.push(dep);
+ if ( activeEffect.options.onTrack) {
+ activeEffect.options.onTrack({
+ effect: activeEffect,
+ target,
+ type,
+ key
+ });
+ }
+ }
+ }
+ function trigger(target, type, key, newValue, oldValue, oldTarget) {
+ const depsMap = targetMap.get(target);
+ if (!depsMap) {
+ // never been tracked
+ return;
+ }
+ const effects = new Set();
+ const add = (effectsToAdd) => {
+ if (effectsToAdd) {
+ effectsToAdd.forEach(effect => {
+ if (effect !== activeEffect || effect.allowRecurse) {
+ effects.add(effect);
+ }
+ });
+ }
+ };
+ if (type === "clear" /* CLEAR */) {
+ // collection being cleared
+ // trigger all effects for target
+ depsMap.forEach(add);
+ }
+ else if (key === 'length' && isArray(target)) {
+ depsMap.forEach((dep, key) => {
+ if (key === 'length' || key >= newValue) {
+ add(dep);
+ }
+ });
+ }
+ else {
+ // schedule runs for SET | ADD | DELETE
+ if (key !== void 0) {
+ add(depsMap.get(key));
+ }
+ // also run for iteration key on ADD | DELETE | Map.SET
+ switch (type) {
+ case "add" /* ADD */:
+ if (!isArray(target)) {
+ add(depsMap.get(ITERATE_KEY));
+ if (isMap(target)) {
+ add(depsMap.get(MAP_KEY_ITERATE_KEY));
+ }
+ }
+ else if (isIntegerKey(key)) {
+ // new index added to array -> length changes
+ add(depsMap.get('length'));
+ }
+ break;
+ case "delete" /* DELETE */:
+ if (!isArray(target)) {
+ add(depsMap.get(ITERATE_KEY));
+ if (isMap(target)) {
+ add(depsMap.get(MAP_KEY_ITERATE_KEY));
+ }
+ }
+ break;
+ case "set" /* SET */:
+ if (isMap(target)) {
+ add(depsMap.get(ITERATE_KEY));
+ }
+ break;
+ }
+ }
+ const run = (effect) => {
+ if ( effect.options.onTrigger) {
+ effect.options.onTrigger({
+ effect,
+ target,
+ key,
+ type,
+ newValue,
+ oldValue,
+ oldTarget
+ });
+ }
+ if (effect.options.scheduler) {
+ effect.options.scheduler(effect);
+ }
+ else {
+ effect();
+ }
+ };
+ effects.forEach(run);
+ }
+
+ const builtInSymbols = new Set(Object.getOwnPropertyNames(Symbol)
+ .map(key => Symbol[key])
+ .filter(isSymbol));
+ const get = /*#__PURE__*/ createGetter();
+ const shallowGet = /*#__PURE__*/ createGetter(false, true);
+ const readonlyGet = /*#__PURE__*/ createGetter(true);
+ const shallowReadonlyGet = /*#__PURE__*/ createGetter(true, true);
+ const arrayInstrumentations = {};
+ ['includes', 'indexOf', 'lastIndexOf'].forEach(key => {
+ const method = Array.prototype[key];
+ arrayInstrumentations[key] = function (...args) {
+ const arr = toRaw(this);
+ for (let i = 0, l = this.length; i < l; i++) {
+ track(arr, "get" /* GET */, i + '');
+ }
+ // we run the method using the original args first (which may be reactive)
+ const res = method.apply(arr, args);
+ if (res === -1 || res === false) {
+ // if that didn't work, run it again using raw values.
+ return method.apply(arr, args.map(toRaw));
+ }
+ else {
+ return res;
+ }
+ };
+ });
+ ['push', 'pop', 'shift', 'unshift', 'splice'].forEach(key => {
+ const method = Array.prototype[key];
+ arrayInstrumentations[key] = function (...args) {
+ pauseTracking();
+ const res = method.apply(this, args);
+ resetTracking();
+ return res;
+ };
+ });
+ function createGetter(isReadonly = false, shallow = false) {
+ return function get(target, key, receiver) {
+ if (key === "__v_isReactive" /* IS_REACTIVE */) {
+ return !isReadonly;
+ }
+ else if (key === "__v_isReadonly" /* IS_READONLY */) {
+ return isReadonly;
+ }
+ else if (key === "__v_raw" /* RAW */ &&
+ receiver === (isReadonly ? readonlyMap : reactiveMap).get(target)) {
+ return target;
+ }
+ const targetIsArray = isArray(target);
+ if (!isReadonly && targetIsArray && hasOwn(arrayInstrumentations, key)) {
+ return Reflect.get(arrayInstrumentations, key, receiver);
+ }
+ const res = Reflect.get(target, key, receiver);
+ if (isSymbol(key)
+ ? builtInSymbols.has(key)
+ : key === `__proto__` || key === `__v_isRef`) {
+ return res;
+ }
+ if (!isReadonly) {
+ track(target, "get" /* GET */, key);
+ }
+ if (shallow) {
+ return res;
+ }
+ if (isRef(res)) {
+ // ref unwrapping - does not apply for Array + integer key.
+ const shouldUnwrap = !targetIsArray || !isIntegerKey(key);
+ return shouldUnwrap ? res.value : res;
+ }
+ if (isObject(res)) {
+ // Convert returned value into a proxy as well. we do the isObject check
+ // here to avoid invalid value warning. Also need to lazy access readonly
+ // and reactive here to avoid circular dependency.
+ return isReadonly ? readonly(res) : reactive(res);
+ }
+ return res;
+ };
+ }
+ const set = /*#__PURE__*/ createSetter();
+ const shallowSet = /*#__PURE__*/ createSetter(true);
+ function createSetter(shallow = false) {
+ return function set(target, key, value, receiver) {
+ const oldValue = target[key];
+ if (!shallow) {
+ value = toRaw(value);
+ if (!isArray(target) && isRef(oldValue) && !isRef(value)) {
+ oldValue.value = value;
+ return true;
+ }
+ }
+ const hadKey = isArray(target) && isIntegerKey(key)
+ ? Number(key) < target.length
+ : hasOwn(target, key);
+ const result = Reflect.set(target, key, value, receiver);
+ // don't trigger if target is something up in the prototype chain of original
+ if (target === toRaw(receiver)) {
+ if (!hadKey) {
+ trigger(target, "add" /* ADD */, key, value);
+ }
+ else if (hasChanged(value, oldValue)) {
+ trigger(target, "set" /* SET */, key, value, oldValue);
+ }
+ }
+ return result;
+ };
+ }
+ function deleteProperty(target, key) {
+ const hadKey = hasOwn(target, key);
+ const oldValue = target[key];
+ const result = Reflect.deleteProperty(target, key);
+ if (result && hadKey) {
+ trigger(target, "delete" /* DELETE */, key, undefined, oldValue);
+ }
+ return result;
+ }
+ function has(target, key) {
+ const result = Reflect.has(target, key);
+ if (!isSymbol(key) || !builtInSymbols.has(key)) {
+ track(target, "has" /* HAS */, key);
+ }
+ return result;
+ }
+ function ownKeys(target) {
+ track(target, "iterate" /* ITERATE */, isArray(target) ? 'length' : ITERATE_KEY);
+ return Reflect.ownKeys(target);
+ }
+ const mutableHandlers = {
+ get,
+ set,
+ deleteProperty,
+ has,
+ ownKeys
+ };
+ const readonlyHandlers = {
+ get: readonlyGet,
+ set(target, key) {
+ {
+ console.warn(`Set operation on key "${String(key)}" failed: target is readonly.`, target);
+ }
+ return true;
+ },
+ deleteProperty(target, key) {
+ {
+ console.warn(`Delete operation on key "${String(key)}" failed: target is readonly.`, target);
+ }
+ return true;
+ }
+ };
+ const shallowReactiveHandlers = extend({}, mutableHandlers, {
+ get: shallowGet,
+ set: shallowSet
+ });
+ // Props handlers are special in the sense that it should not unwrap top-level
+ // refs (in order to allow refs to be explicitly passed down), but should
+ // retain the reactivity of the normal readonly object.
+ const shallowReadonlyHandlers = extend({}, readonlyHandlers, {
+ get: shallowReadonlyGet
+ });
+
+ const toReactive = (value) => isObject(value) ? reactive(value) : value;
+ const toReadonly = (value) => isObject(value) ? readonly(value) : value;
+ const toShallow = (value) => value;
+ const getProto = (v) => Reflect.getPrototypeOf(v);
+ function get$1(target, key, isReadonly = false, isShallow = false) {
+ // #1772: readonly(reactive(Map)) should return readonly + reactive version
+ // of the value
+ target = target["__v_raw" /* RAW */];
+ const rawTarget = toRaw(target);
+ const rawKey = toRaw(key);
+ if (key !== rawKey) {
+ !isReadonly && track(rawTarget, "get" /* GET */, key);
+ }
+ !isReadonly && track(rawTarget, "get" /* GET */, rawKey);
+ const { has } = getProto(rawTarget);
+ const wrap = isReadonly ? toReadonly : isShallow ? toShallow : toReactive;
+ if (has.call(rawTarget, key)) {
+ return wrap(target.get(key));
+ }
+ else if (has.call(rawTarget, rawKey)) {
+ return wrap(target.get(rawKey));
+ }
+ }
+ function has$1(key, isReadonly = false) {
+ const target = this["__v_raw" /* RAW */];
+ const rawTarget = toRaw(target);
+ const rawKey = toRaw(key);
+ if (key !== rawKey) {
+ !isReadonly && track(rawTarget, "has" /* HAS */, key);
+ }
+ !isReadonly && track(rawTarget, "has" /* HAS */, rawKey);
+ return key === rawKey
+ ? target.has(key)
+ : target.has(key) || target.has(rawKey);
+ }
+ function size(target, isReadonly = false) {
+ target = target["__v_raw" /* RAW */];
+ !isReadonly && track(toRaw(target), "iterate" /* ITERATE */, ITERATE_KEY);
+ return Reflect.get(target, 'size', target);
+ }
+ function add(value) {
+ value = toRaw(value);
+ const target = toRaw(this);
+ const proto = getProto(target);
+ const hadKey = proto.has.call(target, value);
+ target.add(value);
+ if (!hadKey) {
+ trigger(target, "add" /* ADD */, value, value);
+ }
+ return this;
+ }
+ function set$1(key, value) {
+ value = toRaw(value);
+ const target = toRaw(this);
+ const { has, get } = getProto(target);
+ let hadKey = has.call(target, key);
+ if (!hadKey) {
+ key = toRaw(key);
+ hadKey = has.call(target, key);
+ }
+ else {
+ checkIdentityKeys(target, has, key);
+ }
+ const oldValue = get.call(target, key);
+ target.set(key, value);
+ if (!hadKey) {
+ trigger(target, "add" /* ADD */, key, value);
+ }
+ else if (hasChanged(value, oldValue)) {
+ trigger(target, "set" /* SET */, key, value, oldValue);
+ }
+ return this;
+ }
+ function deleteEntry(key) {
+ const target = toRaw(this);
+ const { has, get } = getProto(target);
+ let hadKey = has.call(target, key);
+ if (!hadKey) {
+ key = toRaw(key);
+ hadKey = has.call(target, key);
+ }
+ else {
+ checkIdentityKeys(target, has, key);
+ }
+ const oldValue = get ? get.call(target, key) : undefined;
+ // forward the operation before queueing reactions
+ const result = target.delete(key);
+ if (hadKey) {
+ trigger(target, "delete" /* DELETE */, key, undefined, oldValue);
+ }
+ return result;
+ }
+ function clear() {
+ const target = toRaw(this);
+ const hadItems = target.size !== 0;
+ const oldTarget = isMap(target)
+ ? new Map(target)
+ : new Set(target)
+ ;
+ // forward the operation before queueing reactions
+ const result = target.clear();
+ if (hadItems) {
+ trigger(target, "clear" /* CLEAR */, undefined, undefined, oldTarget);
+ }
+ return result;
+ }
+ function createForEach(isReadonly, isShallow) {
+ return function forEach(callback, thisArg) {
+ const observed = this;
+ const target = observed["__v_raw" /* RAW */];
+ const rawTarget = toRaw(target);
+ const wrap = isReadonly ? toReadonly : isShallow ? toShallow : toReactive;
+ !isReadonly && track(rawTarget, "iterate" /* ITERATE */, ITERATE_KEY);
+ return target.forEach((value, key) => {
+ // important: make sure the callback is
+ // 1. invoked with the reactive map as `this` and 3rd arg
+ // 2. the value received should be a corresponding reactive/readonly.
+ return callback.call(thisArg, wrap(value), wrap(key), observed);
+ });
+ };
+ }
+ function createIterableMethod(method, isReadonly, isShallow) {
+ return function (...args) {
+ const target = this["__v_raw" /* RAW */];
+ const rawTarget = toRaw(target);
+ const targetIsMap = isMap(rawTarget);
+ const isPair = method === 'entries' || (method === Symbol.iterator && targetIsMap);
+ const isKeyOnly = method === 'keys' && targetIsMap;
+ const innerIterator = target[method](...args);
+ const wrap = isReadonly ? toReadonly : isShallow ? toShallow : toReactive;
+ !isReadonly &&
+ track(rawTarget, "iterate" /* ITERATE */, isKeyOnly ? MAP_KEY_ITERATE_KEY : ITERATE_KEY);
+ // return a wrapped iterator which returns observed versions of the
+ // values emitted from the real iterator
+ return {
+ // iterator protocol
+ next() {
+ const { value, done } = innerIterator.next();
+ return done
+ ? { value, done }
+ : {
+ value: isPair ? [wrap(value[0]), wrap(value[1])] : wrap(value),
+ done
+ };
+ },
+ // iterable protocol
+ [Symbol.iterator]() {
+ return this;
+ }
+ };
+ };
+ }
+ function createReadonlyMethod(type) {
+ return function (...args) {
+ {
+ const key = args[0] ? `on key "${args[0]}" ` : ``;
+ console.warn(`${capitalize(type)} operation ${key}failed: target is readonly.`, toRaw(this));
+ }
+ return type === "delete" /* DELETE */ ? false : this;
+ };
+ }
+ const mutableInstrumentations = {
+ get(key) {
+ return get$1(this, key);
+ },
+ get size() {
+ return size(this);
+ },
+ has: has$1,
+ add,
+ set: set$1,
+ delete: deleteEntry,
+ clear,
+ forEach: createForEach(false, false)
+ };
+ const shallowInstrumentations = {
+ get(key) {
+ return get$1(this, key, false, true);
+ },
+ get size() {
+ return size(this);
+ },
+ has: has$1,
+ add,
+ set: set$1,
+ delete: deleteEntry,
+ clear,
+ forEach: createForEach(false, true)
+ };
+ const readonlyInstrumentations = {
+ get(key) {
+ return get$1(this, key, true);
+ },
+ get size() {
+ return size(this, true);
+ },
+ has(key) {
+ return has$1.call(this, key, true);
+ },
+ add: createReadonlyMethod("add" /* ADD */),
+ set: createReadonlyMethod("set" /* SET */),
+ delete: createReadonlyMethod("delete" /* DELETE */),
+ clear: createReadonlyMethod("clear" /* CLEAR */),
+ forEach: createForEach(true, false)
+ };
+ const iteratorMethods = ['keys', 'values', 'entries', Symbol.iterator];
+ iteratorMethods.forEach(method => {
+ mutableInstrumentations[method] = createIterableMethod(method, false, false);
+ readonlyInstrumentations[method] = createIterableMethod(method, true, false);
+ shallowInstrumentations[method] = createIterableMethod(method, false, true);
+ });
+ function createInstrumentationGetter(isReadonly, shallow) {
+ const instrumentations = shallow
+ ? shallowInstrumentations
+ : isReadonly
+ ? readonlyInstrumentations
+ : mutableInstrumentations;
+ return (target, key, receiver) => {
+ if (key === "__v_isReactive" /* IS_REACTIVE */) {
+ return !isReadonly;
+ }
+ else if (key === "__v_isReadonly" /* IS_READONLY */) {
+ return isReadonly;
+ }
+ else if (key === "__v_raw" /* RAW */) {
+ return target;
+ }
+ return Reflect.get(hasOwn(instrumentations, key) && key in target
+ ? instrumentations
+ : target, key, receiver);
+ };
+ }
+ const mutableCollectionHandlers = {
+ get: createInstrumentationGetter(false, false)
+ };
+ const shallowCollectionHandlers = {
+ get: createInstrumentationGetter(false, true)
+ };
+ const readonlyCollectionHandlers = {
+ get: createInstrumentationGetter(true, false)
+ };
+ function checkIdentityKeys(target, has, key) {
+ const rawKey = toRaw(key);
+ if (rawKey !== key && has.call(target, rawKey)) {
+ const type = toRawType(target);
+ console.warn(`Reactive ${type} contains both the raw and reactive ` +
+ `versions of the same object${type === `Map` ? ` as keys` : ``}, ` +
+ `which can lead to inconsistencies. ` +
+ `Avoid differentiating between the raw and reactive versions ` +
+ `of an object and only use the reactive version if possible.`);
+ }
+ }
+
+ const reactiveMap = new WeakMap();
+ const readonlyMap = new WeakMap();
+ function targetTypeMap(rawType) {
+ switch (rawType) {
+ case 'Object':
+ case 'Array':
+ return 1 /* COMMON */;
+ case 'Map':
+ case 'Set':
+ case 'WeakMap':
+ case 'WeakSet':
+ return 2 /* COLLECTION */;
+ default:
+ return 0 /* INVALID */;
+ }
+ }
+ function getTargetType(value) {
+ return value["__v_skip" /* SKIP */] || !Object.isExtensible(value)
+ ? 0 /* INVALID */
+ : targetTypeMap(toRawType(value));
+ }
+ function reactive(target) {
+ // if trying to observe a readonly proxy, return the readonly version.
+ if (target && target["__v_isReadonly" /* IS_READONLY */]) {
+ return target;
+ }
+ return createReactiveObject(target, false, mutableHandlers, mutableCollectionHandlers);
+ }
+ /**
+ * Return a shallowly-reactive copy of the original object, where only the root
+ * level properties are reactive. It also does not auto-unwrap refs (even at the
+ * root level).
+ */
+ function shallowReactive(target) {
+ return createReactiveObject(target, false, shallowReactiveHandlers, shallowCollectionHandlers);
+ }
+ /**
+ * Creates a readonly copy of the original object. Note the returned copy is not
+ * made reactive, but `readonly` can be called on an already reactive object.
+ */
+ function readonly(target) {
+ return createReactiveObject(target, true, readonlyHandlers, readonlyCollectionHandlers);
+ }
+ /**
+ * Returns a reactive-copy of the original object, where only the root level
+ * properties are readonly, and does NOT unwrap refs nor recursively convert
+ * returned properties.
+ * This is used for creating the props proxy object for stateful components.
+ */
+ function shallowReadonly(target) {
+ return createReactiveObject(target, true, shallowReadonlyHandlers, readonlyCollectionHandlers);
+ }
+ function createReactiveObject(target, isReadonly, baseHandlers, collectionHandlers) {
+ if (!isObject(target)) {
+ {
+ console.warn(`value cannot be made reactive: ${String(target)}`);
+ }
+ return target;
+ }
+ // target is already a Proxy, return it.
+ // exception: calling readonly() on a reactive object
+ if (target["__v_raw" /* RAW */] &&
+ !(isReadonly && target["__v_isReactive" /* IS_REACTIVE */])) {
+ return target;
+ }
+ // target already has corresponding Proxy
+ const proxyMap = isReadonly ? readonlyMap : reactiveMap;
+ const existingProxy = proxyMap.get(target);
+ if (existingProxy) {
+ return existingProxy;
+ }
+ // only a whitelist of value types can be observed.
+ const targetType = getTargetType(target);
+ if (targetType === 0 /* INVALID */) {
+ return target;
+ }
+ const proxy = new Proxy(target, targetType === 2 /* COLLECTION */ ? collectionHandlers : baseHandlers);
+ proxyMap.set(target, proxy);
+ return proxy;
+ }
+ function isReactive(value) {
+ if (isReadonly(value)) {
+ return isReactive(value["__v_raw" /* RAW */]);
+ }
+ return !!(value && value["__v_isReactive" /* IS_REACTIVE */]);
+ }
+ function isReadonly(value) {
+ return !!(value && value["__v_isReadonly" /* IS_READONLY */]);
+ }
+ function isProxy(value) {
+ return isReactive(value) || isReadonly(value);
+ }
+ function toRaw(observed) {
+ return ((observed && toRaw(observed["__v_raw" /* RAW */])) || observed);
+ }
+ function markRaw(value) {
+ def(value, "__v_skip" /* SKIP */, true);
+ return value;
+ }
+
+ const convert = (val) => isObject(val) ? reactive(val) : val;
+ function isRef(r) {
+ return Boolean(r && r.__v_isRef === true);
+ }
+ function ref(value) {
+ return createRef(value);
+ }
+ function shallowRef(value) {
+ return createRef(value, true);
+ }
+ class RefImpl {
+ constructor(_rawValue, _shallow = false) {
+ this._rawValue = _rawValue;
+ this._shallow = _shallow;
+ this.__v_isRef = true;
+ this._value = _shallow ? _rawValue : convert(_rawValue);
+ }
+ get value() {
+ track(toRaw(this), "get" /* GET */, 'value');
+ return this._value;
+ }
+ set value(newVal) {
+ if (hasChanged(toRaw(newVal), this._rawValue)) {
+ this._rawValue = newVal;
+ this._value = this._shallow ? newVal : convert(newVal);
+ trigger(toRaw(this), "set" /* SET */, 'value', newVal);
+ }
+ }
+ }
+ function createRef(rawValue, shallow = false) {
+ if (isRef(rawValue)) {
+ return rawValue;
+ }
+ return new RefImpl(rawValue, shallow);
+ }
+ function triggerRef(ref) {
+ trigger(toRaw(ref), "set" /* SET */, 'value', ref.value );
+ }
+ function unref(ref) {
+ return isRef(ref) ? ref.value : ref;
+ }
+ const shallowUnwrapHandlers = {
+ get: (target, key, receiver) => unref(Reflect.get(target, key, receiver)),
+ set: (target, key, value, receiver) => {
+ const oldValue = target[key];
+ if (isRef(oldValue) && !isRef(value)) {
+ oldValue.value = value;
+ return true;
+ }
+ else {
+ return Reflect.set(target, key, value, receiver);
+ }
+ }
+ };
+ function proxyRefs(objectWithRefs) {
+ return isReactive(objectWithRefs)
+ ? objectWithRefs
+ : new Proxy(objectWithRefs, shallowUnwrapHandlers);
+ }
+ class CustomRefImpl {
+ constructor(factory) {
+ this.__v_isRef = true;
+ const { get, set } = factory(() => track(this, "get" /* GET */, 'value'), () => trigger(this, "set" /* SET */, 'value'));
+ this._get = get;
+ this._set = set;
+ }
+ get value() {
+ return this._get();
+ }
+ set value(newVal) {
+ this._set(newVal);
+ }
+ }
+ function customRef(factory) {
+ return new CustomRefImpl(factory);
+ }
+ function toRefs(object) {
+ if ( !isProxy(object)) {
+ console.warn(`toRefs() expects a reactive object but received a plain one.`);
+ }
+ const ret = isArray(object) ? new Array(object.length) : {};
+ for (const key in object) {
+ ret[key] = toRef(object, key);
+ }
+ return ret;
+ }
+ class ObjectRefImpl {
+ constructor(_object, _key) {
+ this._object = _object;
+ this._key = _key;
+ this.__v_isRef = true;
+ }
+ get value() {
+ return this._object[this._key];
+ }
+ set value(newVal) {
+ this._object[this._key] = newVal;
+ }
+ }
+ function toRef(object, key) {
+ return isRef(object[key])
+ ? object[key]
+ : new ObjectRefImpl(object, key);
+ }
+
+ class ComputedRefImpl {
+ constructor(getter, _setter, isReadonly) {
+ this._setter = _setter;
+ this._dirty = true;
+ this.__v_isRef = true;
+ this.effect = effect(getter, {
+ lazy: true,
+ scheduler: () => {
+ if (!this._dirty) {
+ this._dirty = true;
+ trigger(toRaw(this), "set" /* SET */, 'value');
+ }
+ }
+ });
+ this["__v_isReadonly" /* IS_READONLY */] = isReadonly;
+ }
+ get value() {
+ if (this._dirty) {
+ this._value = this.effect();
+ this._dirty = false;
+ }
+ track(toRaw(this), "get" /* GET */, 'value');
+ return this._value;
+ }
+ set value(newValue) {
+ this._setter(newValue);
+ }
+ }
+ function computed(getterOrOptions) {
+ let getter;
+ let setter;
+ if (isFunction(getterOrOptions)) {
+ getter = getterOrOptions;
+ setter = () => {
+ console.warn('Write operation failed: computed value is readonly');
+ }
+ ;
+ }
+ else {
+ getter = getterOrOptions.get;
+ setter = getterOrOptions.set;
+ }
+ return new ComputedRefImpl(getter, setter, isFunction(getterOrOptions) || !getterOrOptions.set);
+ }
+
+ const stack = [];
+ function pushWarningContext(vnode) {
+ stack.push(vnode);
+ }
+ function popWarningContext() {
+ stack.pop();
+ }
+ function warn(msg, ...args) {
+ // avoid props formatting or warn handler tracking deps that might be mutated
+ // during patch, leading to infinite recursion.
+ pauseTracking();
+ const instance = stack.length ? stack[stack.length - 1].component : null;
+ const appWarnHandler = instance && instance.appContext.config.warnHandler;
+ const trace = getComponentTrace();
+ if (appWarnHandler) {
+ callWithErrorHandling(appWarnHandler, instance, 11 /* APP_WARN_HANDLER */, [
+ msg + args.join(''),
+ instance && instance.proxy,
+ trace
+ .map(({ vnode }) => `at <${formatComponentName(instance, vnode.type)}>`)
+ .join('\n'),
+ trace
+ ]);
+ }
+ else {
+ const warnArgs = [`[Vue warn]: ${msg}`, ...args];
+ /* istanbul ignore if */
+ if (trace.length &&
+ // avoid spamming console during tests
+ !false) {
+ warnArgs.push(`\n`, ...formatTrace(trace));
+ }
+ console.warn(...warnArgs);
+ }
+ resetTracking();
+ }
+ function getComponentTrace() {
+ let currentVNode = stack[stack.length - 1];
+ if (!currentVNode) {
+ return [];
+ }
+ // we can't just use the stack because it will be incomplete during updates
+ // that did not start from the root. Re-construct the parent chain using
+ // instance parent pointers.
+ const normalizedStack = [];
+ while (currentVNode) {
+ const last = normalizedStack[0];
+ if (last && last.vnode === currentVNode) {
+ last.recurseCount++;
+ }
+ else {
+ normalizedStack.push({
+ vnode: currentVNode,
+ recurseCount: 0
+ });
+ }
+ const parentInstance = currentVNode.component && currentVNode.component.parent;
+ currentVNode = parentInstance && parentInstance.vnode;
+ }
+ return normalizedStack;
+ }
+ /* istanbul ignore next */
+ function formatTrace(trace) {
+ const logs = [];
+ trace.forEach((entry, i) => {
+ logs.push(...(i === 0 ? [] : [`\n`]), ...formatTraceEntry(entry));
+ });
+ return logs;
+ }
+ function formatTraceEntry({ vnode, recurseCount }) {
+ const postfix = recurseCount > 0 ? `... (${recurseCount} recursive calls)` : ``;
+ const isRoot = vnode.component ? vnode.component.parent == null : false;
+ const open = ` at <${formatComponentName(vnode.component, vnode.type, isRoot)}`;
+ const close = `>` + postfix;
+ return vnode.props
+ ? [open, ...formatProps(vnode.props), close]
+ : [open + close];
+ }
+ /* istanbul ignore next */
+ function formatProps(props) {
+ const res = [];
+ const keys = Object.keys(props);
+ keys.slice(0, 3).forEach(key => {
+ res.push(...formatProp(key, props[key]));
+ });
+ if (keys.length > 3) {
+ res.push(` ...`);
+ }
+ return res;
+ }
+ /* istanbul ignore next */
+ function formatProp(key, value, raw) {
+ if (isString(value)) {
+ value = JSON.stringify(value);
+ return raw ? value : [`${key}=${value}`];
+ }
+ else if (typeof value === 'number' ||
+ typeof value === 'boolean' ||
+ value == null) {
+ return raw ? value : [`${key}=${value}`];
+ }
+ else if (isRef(value)) {
+ value = formatProp(key, toRaw(value.value), true);
+ return raw ? value : [`${key}=Ref<`, value, `>`];
+ }
+ else if (isFunction(value)) {
+ return [`${key}=fn${value.name ? `<${value.name}>` : ``}`];
+ }
+ else {
+ value = toRaw(value);
+ return raw ? value : [`${key}=`, value];
+ }
+ }
+
+ const ErrorTypeStrings = {
+ ["bc" /* BEFORE_CREATE */]: 'beforeCreate hook',
+ ["c" /* CREATED */]: 'created hook',
+ ["bm" /* BEFORE_MOUNT */]: 'beforeMount hook',
+ ["m" /* MOUNTED */]: 'mounted hook',
+ ["bu" /* BEFORE_UPDATE */]: 'beforeUpdate hook',
+ ["u" /* UPDATED */]: 'updated',
+ ["bum" /* BEFORE_UNMOUNT */]: 'beforeUnmount hook',
+ ["um" /* UNMOUNTED */]: 'unmounted hook',
+ ["a" /* ACTIVATED */]: 'activated hook',
+ ["da" /* DEACTIVATED */]: 'deactivated hook',
+ ["ec" /* ERROR_CAPTURED */]: 'errorCaptured hook',
+ ["rtc" /* RENDER_TRACKED */]: 'renderTracked hook',
+ ["rtg" /* RENDER_TRIGGERED */]: 'renderTriggered hook',
+ [0 /* SETUP_FUNCTION */]: 'setup function',
+ [1 /* RENDER_FUNCTION */]: 'render function',
+ [2 /* WATCH_GETTER */]: 'watcher getter',
+ [3 /* WATCH_CALLBACK */]: 'watcher callback',
+ [4 /* WATCH_CLEANUP */]: 'watcher cleanup function',
+ [5 /* NATIVE_EVENT_HANDLER */]: 'native event handler',
+ [6 /* COMPONENT_EVENT_HANDLER */]: 'component event handler',
+ [7 /* VNODE_HOOK */]: 'vnode hook',
+ [8 /* DIRECTIVE_HOOK */]: 'directive hook',
+ [9 /* TRANSITION_HOOK */]: 'transition hook',
+ [10 /* APP_ERROR_HANDLER */]: 'app errorHandler',
+ [11 /* APP_WARN_HANDLER */]: 'app warnHandler',
+ [12 /* FUNCTION_REF */]: 'ref function',
+ [13 /* ASYNC_COMPONENT_LOADER */]: 'async component loader',
+ [14 /* SCHEDULER */]: 'scheduler flush. This is likely a Vue internals bug. ' +
+ 'Please open an issue at https://new-issue.vuejs.org/?repo=vuejs/vue-next'
+ };
+ function callWithErrorHandling(fn, instance, type, args) {
+ let res;
+ try {
+ res = args ? fn(...args) : fn();
+ }
+ catch (err) {
+ handleError(err, instance, type);
+ }
+ return res;
+ }
+ function callWithAsyncErrorHandling(fn, instance, type, args) {
+ if (isFunction(fn)) {
+ const res = callWithErrorHandling(fn, instance, type, args);
+ if (res && isPromise(res)) {
+ res.catch(err => {
+ handleError(err, instance, type);
+ });
+ }
+ return res;
+ }
+ const values = [];
+ for (let i = 0; i < fn.length; i++) {
+ values.push(callWithAsyncErrorHandling(fn[i], instance, type, args));
+ }
+ return values;
+ }
+ function handleError(err, instance, type, throwInDev = true) {
+ const contextVNode = instance ? instance.vnode : null;
+ if (instance) {
+ let cur = instance.parent;
+ // the exposed instance is the render proxy to keep it consistent with 2.x
+ const exposedInstance = instance.proxy;
+ // in production the hook receives only the error code
+ const errorInfo = ErrorTypeStrings[type] ;
+ while (cur) {
+ const errorCapturedHooks = cur.ec;
+ if (errorCapturedHooks) {
+ for (let i = 0; i < errorCapturedHooks.length; i++) {
+ if (errorCapturedHooks[i](err, exposedInstance, errorInfo) === false) {
+ return;
+ }
+ }
+ }
+ cur = cur.parent;
+ }
+ // app-level handling
+ const appErrorHandler = instance.appContext.config.errorHandler;
+ if (appErrorHandler) {
+ callWithErrorHandling(appErrorHandler, null, 10 /* APP_ERROR_HANDLER */, [err, exposedInstance, errorInfo]);
+ return;
+ }
+ }
+ logError(err, type, contextVNode, throwInDev);
+ }
+ function logError(err, type, contextVNode, throwInDev = true) {
+ {
+ const info = ErrorTypeStrings[type];
+ if (contextVNode) {
+ pushWarningContext(contextVNode);
+ }
+ warn(`Unhandled error${info ? ` during execution of ${info}` : ``}`);
+ if (contextVNode) {
+ popWarningContext();
+ }
+ // crash in dev by default so it's more noticeable
+ if (throwInDev) {
+ throw err;
+ }
+ else {
+ console.error(err);
+ }
+ }
+ }
+
+ let isFlushing = false;
+ let isFlushPending = false;
+ const queue = [];
+ let flushIndex = 0;
+ const pendingPreFlushCbs = [];
+ let activePreFlushCbs = null;
+ let preFlushIndex = 0;
+ const pendingPostFlushCbs = [];
+ let activePostFlushCbs = null;
+ let postFlushIndex = 0;
+ const resolvedPromise = Promise.resolve();
+ let currentFlushPromise = null;
+ let currentPreFlushParentJob = null;
+ const RECURSION_LIMIT = 100;
+ function nextTick(fn) {
+ const p = currentFlushPromise || resolvedPromise;
+ return fn ? p.then(this ? fn.bind(this) : fn) : p;
+ }
+ function queueJob(job) {
+ // the dedupe search uses the startIndex argument of Array.includes()
+ // by default the search index includes the current job that is being run
+ // so it cannot recursively trigger itself again.
+ // if the job is a watch() callback, the search will start with a +1 index to
+ // allow it recursively trigger itself - it is the user's responsibility to
+ // ensure it doesn't end up in an infinite loop.
+ if ((!queue.length ||
+ !queue.includes(job, isFlushing && job.allowRecurse ? flushIndex + 1 : flushIndex)) &&
+ job !== currentPreFlushParentJob) {
+ queue.push(job);
+ queueFlush();
+ }
+ }
+ function queueFlush() {
+ if (!isFlushing && !isFlushPending) {
+ isFlushPending = true;
+ currentFlushPromise = resolvedPromise.then(flushJobs);
+ }
+ }
+ function invalidateJob(job) {
+ const i = queue.indexOf(job);
+ if (i > -1) {
+ queue.splice(i, 1);
+ }
+ }
+ function queueCb(cb, activeQueue, pendingQueue, index) {
+ if (!isArray(cb)) {
+ if (!activeQueue ||
+ !activeQueue.includes(cb, cb.allowRecurse ? index + 1 : index)) {
+ pendingQueue.push(cb);
+ }
+ }
+ else {
+ // if cb is an array, it is a component lifecycle hook which can only be
+ // triggered by a job, which is already deduped in the main queue, so
+ // we can skip duplicate check here to improve perf
+ pendingQueue.push(...cb);
+ }
+ queueFlush();
+ }
+ function queuePreFlushCb(cb) {
+ queueCb(cb, activePreFlushCbs, pendingPreFlushCbs, preFlushIndex);
+ }
+ function queuePostFlushCb(cb) {
+ queueCb(cb, activePostFlushCbs, pendingPostFlushCbs, postFlushIndex);
+ }
+ function flushPreFlushCbs(seen, parentJob = null) {
+ if (pendingPreFlushCbs.length) {
+ currentPreFlushParentJob = parentJob;
+ activePreFlushCbs = [...new Set(pendingPreFlushCbs)];
+ pendingPreFlushCbs.length = 0;
+ {
+ seen = seen || new Map();
+ }
+ for (preFlushIndex = 0; preFlushIndex < activePreFlushCbs.length; preFlushIndex++) {
+ {
+ checkRecursiveUpdates(seen, activePreFlushCbs[preFlushIndex]);
+ }
+ activePreFlushCbs[preFlushIndex]();
+ }
+ activePreFlushCbs = null;
+ preFlushIndex = 0;
+ currentPreFlushParentJob = null;
+ // recursively flush until it drains
+ flushPreFlushCbs(seen, parentJob);
+ }
+ }
+ function flushPostFlushCbs(seen) {
+ if (pendingPostFlushCbs.length) {
+ const deduped = [...new Set(pendingPostFlushCbs)];
+ pendingPostFlushCbs.length = 0;
+ // #1947 already has active queue, nested flushPostFlushCbs call
+ if (activePostFlushCbs) {
+ activePostFlushCbs.push(...deduped);
+ return;
+ }
+ activePostFlushCbs = deduped;
+ {
+ seen = seen || new Map();
+ }
+ activePostFlushCbs.sort((a, b) => getId(a) - getId(b));
+ for (postFlushIndex = 0; postFlushIndex < activePostFlushCbs.length; postFlushIndex++) {
+ {
+ checkRecursiveUpdates(seen, activePostFlushCbs[postFlushIndex]);
+ }
+ activePostFlushCbs[postFlushIndex]();
+ }
+ activePostFlushCbs = null;
+ postFlushIndex = 0;
+ }
+ }
+ const getId = (job) => job.id == null ? Infinity : job.id;
+ function flushJobs(seen) {
+ isFlushPending = false;
+ isFlushing = true;
+ {
+ seen = seen || new Map();
+ }
+ flushPreFlushCbs(seen);
+ // Sort queue before flush.
+ // This ensures that:
+ // 1. Components are updated from parent to child. (because parent is always
+ // created before the child so its render effect will have smaller
+ // priority number)
+ // 2. If a component is unmounted during a parent component's update,
+ // its update can be skipped.
+ queue.sort((a, b) => getId(a) - getId(b));
+ try {
+ for (flushIndex = 0; flushIndex < queue.length; flushIndex++) {
+ const job = queue[flushIndex];
+ if (job) {
+ if (true) {
+ checkRecursiveUpdates(seen, job);
+ }
+ callWithErrorHandling(job, null, 14 /* SCHEDULER */);
+ }
+ }
+ }
+ finally {
+ flushIndex = 0;
+ queue.length = 0;
+ flushPostFlushCbs(seen);
+ isFlushing = false;
+ currentFlushPromise = null;
+ // some postFlushCb queued jobs!
+ // keep flushing until it drains.
+ if (queue.length || pendingPostFlushCbs.length) {
+ flushJobs(seen);
+ }
+ }
+ }
+ function checkRecursiveUpdates(seen, fn) {
+ if (!seen.has(fn)) {
+ seen.set(fn, 1);
+ }
+ else {
+ const count = seen.get(fn);
+ if (count > RECURSION_LIMIT) {
+ throw new Error(`Maximum recursive updates exceeded. ` +
+ `This means you have a reactive effect that is mutating its own ` +
+ `dependencies and thus recursively triggering itself. Possible sources ` +
+ `include component template, render function, updated hook or ` +
+ `watcher source function.`);
+ }
+ else {
+ seen.set(fn, count + 1);
+ }
+ }
+ }
+
+ /* eslint-disable no-restricted-globals */
+ let isHmrUpdating = false;
+ const hmrDirtyComponents = new Set();
+ // Expose the HMR runtime on the global object
+ // This makes it entirely tree-shakable without polluting the exports and makes
+ // it easier to be used in toolings like vue-loader
+ // Note: for a component to be eligible for HMR it also needs the __hmrId option
+ // to be set so that its instances can be registered / removed.
+ {
+ const globalObject = typeof global !== 'undefined'
+ ? global
+ : typeof self !== 'undefined'
+ ? self
+ : typeof window !== 'undefined'
+ ? window
+ : {};
+ globalObject.__VUE_HMR_RUNTIME__ = {
+ createRecord: tryWrap(createRecord),
+ rerender: tryWrap(rerender),
+ reload: tryWrap(reload)
+ };
+ }
+ const map = new Map();
+ function registerHMR(instance) {
+ const id = instance.type.__hmrId;
+ let record = map.get(id);
+ if (!record) {
+ createRecord(id, instance.type);
+ record = map.get(id);
+ }
+ record.instances.add(instance);
+ }
+ function unregisterHMR(instance) {
+ map.get(instance.type.__hmrId).instances.delete(instance);
+ }
+ function createRecord(id, component) {
+ if (!component) {
+ warn(`HMR API usage is out of date.\n` +
+ `Please upgrade vue-loader/vite/rollup-plugin-vue or other relevant ` +
+ `depdendency that handles Vue SFC compilation.`);
+ component = {};
+ }
+ if (map.has(id)) {
+ return false;
+ }
+ map.set(id, {
+ component: isClassComponent(component) ? component.__vccOpts : component,
+ instances: new Set()
+ });
+ return true;
+ }
+ function rerender(id, newRender) {
+ const record = map.get(id);
+ if (!record)
+ return;
+ if (newRender)
+ record.component.render = newRender;
+ // Array.from creates a snapshot which avoids the set being mutated during
+ // updates
+ Array.from(record.instances).forEach(instance => {
+ if (newRender) {
+ instance.render = newRender;
+ }
+ instance.renderCache = [];
+ // this flag forces child components with slot content to update
+ isHmrUpdating = true;
+ instance.update();
+ isHmrUpdating = false;
+ });
+ }
+ function reload(id, newComp) {
+ const record = map.get(id);
+ if (!record)
+ return;
+ // Array.from creates a snapshot which avoids the set being mutated during
+ // updates
+ const { component, instances } = record;
+ if (!hmrDirtyComponents.has(component)) {
+ // 1. Update existing comp definition to match new one
+ newComp = isClassComponent(newComp) ? newComp.__vccOpts : newComp;
+ extend(component, newComp);
+ for (const key in component) {
+ if (!(key in newComp)) {
+ delete component[key];
+ }
+ }
+ // 2. Mark component dirty. This forces the renderer to replace the component
+ // on patch.
+ hmrDirtyComponents.add(component);
+ // 3. Make sure to unmark the component after the reload.
+ queuePostFlushCb(() => {
+ hmrDirtyComponents.delete(component);
+ });
+ }
+ Array.from(instances).forEach(instance => {
+ if (instance.parent) {
+ // 4. Force the parent instance to re-render. This will cause all updated
+ // components to be unmounted and re-mounted. Queue the update so that we
+ // don't end up forcing the same parent to re-render multiple times.
+ queueJob(instance.parent.update);
+ }
+ else if (instance.appContext.reload) {
+ // root instance mounted via createApp() has a reload method
+ instance.appContext.reload();
+ }
+ else if (typeof window !== 'undefined') {
+ // root instance inside tree created via raw render(). Force reload.
+ window.location.reload();
+ }
+ else {
+ console.warn('[HMR] Root or manually mounted instance modified. Full reload required.');
+ }
+ });
+ }
+ function tryWrap(fn) {
+ return (id, arg) => {
+ try {
+ return fn(id, arg);
+ }
+ catch (e) {
+ console.error(e);
+ console.warn(`[HMR] Something went wrong during Vue component hot-reload. ` +
+ `Full reload required.`);
+ }
+ };
+ }
+
+ function setDevtoolsHook(hook) {
+ exports.devtools = hook;
+ }
+ function devtoolsInitApp(app, version) {
+ // TODO queue if devtools is undefined
+ if (!exports.devtools)
+ return;
+ exports.devtools.emit("app:init" /* APP_INIT */, app, version, {
+ Fragment,
+ Text,
+ Comment,
+ Static
+ });
+ }
+ function devtoolsUnmountApp(app) {
+ if (!exports.devtools)
+ return;
+ exports.devtools.emit("app:unmount" /* APP_UNMOUNT */, app);
+ }
+ const devtoolsComponentAdded = /*#__PURE__*/ createDevtoolsComponentHook("component:added" /* COMPONENT_ADDED */);
+ const devtoolsComponentUpdated = /*#__PURE__*/ createDevtoolsComponentHook("component:updated" /* COMPONENT_UPDATED */);
+ const devtoolsComponentRemoved = /*#__PURE__*/ createDevtoolsComponentHook("component:removed" /* COMPONENT_REMOVED */);
+ function createDevtoolsComponentHook(hook) {
+ return (component) => {
+ if (!exports.devtools)
+ return;
+ exports.devtools.emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined, component);
+ };
+ }
+ function devtoolsComponentEmit(component, event, params) {
+ if (!exports.devtools)
+ return;
+ exports.devtools.emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);
+ }
+
+ function emit(instance, event, ...rawArgs) {
+ const props = instance.vnode.props || EMPTY_OBJ;
+ {
+ const { emitsOptions, propsOptions: [propsOptions] } = instance;
+ if (emitsOptions) {
+ if (!(event in emitsOptions)) {
+ if (!propsOptions || !(toHandlerKey(event) in propsOptions)) {
+ warn(`Component emitted event "${event}" but it is neither declared in ` +
+ `the emits option nor as an "${toHandlerKey(event)}" prop.`);
+ }
+ }
+ else {
+ const validator = emitsOptions[event];
+ if (isFunction(validator)) {
+ const isValid = validator(...rawArgs);
+ if (!isValid) {
+ warn(`Invalid event arguments: event validation failed for event "${event}".`);
+ }
+ }
+ }
+ }
+ }
+ let args = rawArgs;
+ const isModelListener = event.startsWith('update:');
+ // for v-model update:xxx events, apply modifiers on args
+ const modelArg = isModelListener && event.slice(7);
+ if (modelArg && modelArg in props) {
+ const modifiersKey = `${modelArg === 'modelValue' ? 'model' : modelArg}Modifiers`;
+ const { number, trim } = props[modifiersKey] || EMPTY_OBJ;
+ if (trim) {
+ args = rawArgs.map(a => a.trim());
+ }
+ else if (number) {
+ args = rawArgs.map(toNumber);
+ }
+ }
+ {
+ devtoolsComponentEmit(instance, event, args);
+ }
+ {
+ const lowerCaseEvent = event.toLowerCase();
+ if (lowerCaseEvent !== event && props[toHandlerKey(lowerCaseEvent)]) {
+ warn(`Event "${lowerCaseEvent}" is emitted in component ` +
+ `${formatComponentName(instance, instance.type)} but the handler is registered for "${event}". ` +
+ `Note that HTML attributes are case-insensitive and you cannot use ` +
+ `v-on to listen to camelCase events when using in-DOM templates. ` +
+ `You should probably use "${hyphenate(event)}" instead of "${event}".`);
+ }
+ }
+ // convert handler name to camelCase. See issue #2249
+ let handlerName = toHandlerKey(camelize(event));
+ let handler = props[handlerName];
+ // for v-model update:xxx events, also trigger kebab-case equivalent
+ // for props passed via kebab-case
+ if (!handler && isModelListener) {
+ handlerName = toHandlerKey(hyphenate(event));
+ handler = props[handlerName];
+ }
+ if (handler) {
+ callWithAsyncErrorHandling(handler, instance, 6 /* COMPONENT_EVENT_HANDLER */, args);
+ }
+ const onceHandler = props[handlerName + `Once`];
+ if (onceHandler) {
+ if (!instance.emitted) {
+ (instance.emitted = {})[handlerName] = true;
+ }
+ else if (instance.emitted[handlerName]) {
+ return;
+ }
+ callWithAsyncErrorHandling(onceHandler, instance, 6 /* COMPONENT_EVENT_HANDLER */, args);
+ }
+ }
+ function normalizeEmitsOptions(comp, appContext, asMixin = false) {
+ if (!appContext.deopt && comp.__emits !== undefined) {
+ return comp.__emits;
+ }
+ const raw = comp.emits;
+ let normalized = {};
+ // apply mixin/extends props
+ let hasExtends = false;
+ if ( !isFunction(comp)) {
+ const extendEmits = (raw) => {
+ hasExtends = true;
+ extend(normalized, normalizeEmitsOptions(raw, appContext, true));
+ };
+ if (!asMixin && appContext.mixins.length) {
+ appContext.mixins.forEach(extendEmits);
+ }
+ if (comp.extends) {
+ extendEmits(comp.extends);
+ }
+ if (comp.mixins) {
+ comp.mixins.forEach(extendEmits);
+ }
+ }
+ if (!raw && !hasExtends) {
+ return (comp.__emits = null);
+ }
+ if (isArray(raw)) {
+ raw.forEach(key => (normalized[key] = null));
+ }
+ else {
+ extend(normalized, raw);
+ }
+ return (comp.__emits = normalized);
+ }
+ // Check if an incoming prop key is a declared emit event listener.
+ // e.g. With `emits: { click: null }`, props named `onClick` and `onclick` are
+ // both considered matched listeners.
+ function isEmitListener(options, key) {
+ if (!options || !isOn(key)) {
+ return false;
+ }
+ key = key.slice(2).replace(/Once$/, '');
+ return (hasOwn(options, key[0].toLowerCase() + key.slice(1)) ||
+ hasOwn(options, hyphenate(key)) ||
+ hasOwn(options, key));
+ }
+
+ /**
+ * mark the current rendering instance for asset resolution (e.g.
+ * resolveComponent, resolveDirective) during render
+ */
+ let currentRenderingInstance = null;
+ function setCurrentRenderingInstance(instance) {
+ currentRenderingInstance = instance;
+ }
+ /**
+ * dev only flag to track whether $attrs was used during render.
+ * If $attrs was used during render then the warning for failed attrs
+ * fallthrough can be suppressed.
+ */
+ let accessedAttrs = false;
+ function markAttrsAccessed() {
+ accessedAttrs = true;
+ }
+ function renderComponentRoot(instance) {
+ const { type: Component, vnode, proxy, withProxy, props, propsOptions: [propsOptions], slots, attrs, emit, render, renderCache, data, setupState, ctx } = instance;
+ let result;
+ currentRenderingInstance = instance;
+ {
+ accessedAttrs = false;
+ }
+ try {
+ let fallthroughAttrs;
+ if (vnode.shapeFlag & 4 /* STATEFUL_COMPONENT */) {
+ // withProxy is a proxy with a different `has` trap only for
+ // runtime-compiled render functions using `with` block.
+ const proxyToUse = withProxy || proxy;
+ result = normalizeVNode(render.call(proxyToUse, proxyToUse, renderCache, props, setupState, data, ctx));
+ fallthroughAttrs = attrs;
+ }
+ else {
+ // functional
+ const render = Component;
+ // in dev, mark attrs accessed if optional props (attrs === props)
+ if (true && attrs === props) {
+ markAttrsAccessed();
+ }
+ result = normalizeVNode(render.length > 1
+ ? render(props, true
+ ? {
+ get attrs() {
+ markAttrsAccessed();
+ return attrs;
+ },
+ slots,
+ emit
+ }
+ : { attrs, slots, emit })
+ : render(props, null /* we know it doesn't need it */));
+ fallthroughAttrs = Component.props
+ ? attrs
+ : getFunctionalFallthrough(attrs);
+ }
+ // attr merging
+ // in dev mode, comments are preserved, and it's possible for a template
+ // to have comments along side the root element which makes it a fragment
+ let root = result;
+ let setRoot = undefined;
+ if (true && result.patchFlag & 2048 /* DEV_ROOT_FRAGMENT */) {
+ ;
+ [root, setRoot] = getChildRoot(result);
+ }
+ if (Component.inheritAttrs !== false && fallthroughAttrs) {
+ const keys = Object.keys(fallthroughAttrs);
+ const { shapeFlag } = root;
+ if (keys.length) {
+ if (shapeFlag & 1 /* ELEMENT */ ||
+ shapeFlag & 6 /* COMPONENT */) {
+ if (propsOptions && keys.some(isModelListener)) {
+ // If a v-model listener (onUpdate:xxx) has a corresponding declared
+ // prop, it indicates this component expects to handle v-model and
+ // it should not fallthrough.
+ // related: #1543, #1643, #1989
+ fallthroughAttrs = filterModelListeners(fallthroughAttrs, propsOptions);
+ }
+ root = cloneVNode(root, fallthroughAttrs);
+ }
+ else if (true && !accessedAttrs && root.type !== Comment) {
+ const allAttrs = Object.keys(attrs);
+ const eventAttrs = [];
+ const extraAttrs = [];
+ for (let i = 0, l = allAttrs.length; i < l; i++) {
+ const key = allAttrs[i];
+ if (isOn(key)) {
+ // ignore v-model handlers when they fail to fallthrough
+ if (!isModelListener(key)) {
+ // remove `on`, lowercase first letter to reflect event casing
+ // accurately
+ eventAttrs.push(key[2].toLowerCase() + key.slice(3));
+ }
+ }
+ else {
+ extraAttrs.push(key);
+ }
+ }
+ if (extraAttrs.length) {
+ warn(`Extraneous non-props attributes (` +
+ `${extraAttrs.join(', ')}) ` +
+ `were passed to component but could not be automatically inherited ` +
+ `because component renders fragment or text root nodes.`);
+ }
+ if (eventAttrs.length) {
+ warn(`Extraneous non-emits event listeners (` +
+ `${eventAttrs.join(', ')}) ` +
+ `were passed to component but could not be automatically inherited ` +
+ `because component renders fragment or text root nodes. ` +
+ `If the listener is intended to be a component custom event listener only, ` +
+ `declare it using the "emits" option.`);
+ }
+ }
+ }
+ }
+ // inherit directives
+ if (vnode.dirs) {
+ if (true && !isElementRoot(root)) {
+ warn(`Runtime directive used on component with non-element root node. ` +
+ `The directives will not function as intended.`);
+ }
+ root.dirs = root.dirs ? root.dirs.concat(vnode.dirs) : vnode.dirs;
+ }
+ // inherit transition data
+ if (vnode.transition) {
+ if (true && !isElementRoot(root)) {
+ warn(`Component inside <Transition> renders non-element root node ` +
+ `that cannot be animated.`);
+ }
+ root.transition = vnode.transition;
+ }
+ if (true && setRoot) {
+ setRoot(root);
+ }
+ else {
+ result = root;
+ }
+ }
+ catch (err) {
+ handleError(err, instance, 1 /* RENDER_FUNCTION */);
+ result = createVNode(Comment);
+ }
+ currentRenderingInstance = null;
+ return result;
+ }
+ /**
+ * dev only
+ * In dev mode, template root level comments are rendered, which turns the
+ * template into a fragment root, but we need to locate the single element
+ * root for attrs and scope id processing.
+ */
+ const getChildRoot = (vnode) => {
+ const rawChildren = vnode.children;
+ const dynamicChildren = vnode.dynamicChildren;
+ const childRoot = filterSingleRoot(rawChildren);
+ if (!childRoot) {
+ return [vnode, undefined];
+ }
+ const index = rawChildren.indexOf(childRoot);
+ const dynamicIndex = dynamicChildren ? dynamicChildren.indexOf(childRoot) : -1;
+ const setRoot = (updatedRoot) => {
+ rawChildren[index] = updatedRoot;
+ if (dynamicChildren) {
+ if (dynamicIndex > -1) {
+ dynamicChildren[dynamicIndex] = updatedRoot;
+ }
+ else if (updatedRoot.patchFlag > 0) {
+ vnode.dynamicChildren = [...dynamicChildren, updatedRoot];
+ }
+ }
+ };
+ return [normalizeVNode(childRoot), setRoot];
+ };
+ function filterSingleRoot(children) {
+ let singleRoot;
+ for (let i = 0; i < children.length; i++) {
+ const child = children[i];
+ if (isVNode(child)) {
+ // ignore user comment
+ if (child.type !== Comment || child.children === 'v-if') {
+ if (singleRoot) {
+ // has more than 1 non-comment child, return now
+ return;
+ }
+ else {
+ singleRoot = child;
+ }
+ }
+ }
+ else {
+ return;
+ }
+ }
+ return singleRoot;
+ }
+ const getFunctionalFallthrough = (attrs) => {
+ let res;
+ for (const key in attrs) {
+ if (key === 'class' || key === 'style' || isOn(key)) {
+ (res || (res = {}))[key] = attrs[key];
+ }
+ }
+ return res;
+ };
+ const filterModelListeners = (attrs, props) => {
+ const res = {};
+ for (const key in attrs) {
+ if (!isModelListener(key) || !(key.slice(9) in props)) {
+ res[key] = attrs[key];
+ }
+ }
+ return res;
+ };
+ const isElementRoot = (vnode) => {
+ return (vnode.shapeFlag & 6 /* COMPONENT */ ||
+ vnode.shapeFlag & 1 /* ELEMENT */ ||
+ vnode.type === Comment // potential v-if branch switch
+ );
+ };
+ function shouldUpdateComponent(prevVNode, nextVNode, optimized) {
+ const { props: prevProps, children: prevChildren, component } = prevVNode;
+ const { props: nextProps, children: nextChildren, patchFlag } = nextVNode;
+ const emits = component.emitsOptions;
+ // Parent component's render function was hot-updated. Since this may have
+ // caused the child component's slots content to have changed, we need to
+ // force the child to update as well.
+ if ( (prevChildren || nextChildren) && isHmrUpdating) {
+ return true;
+ }
+ // force child update for runtime directive or transition on component vnode.
+ if (nextVNode.dirs || nextVNode.transition) {
+ return true;
+ }
+ if (optimized && patchFlag >= 0) {
+ if (patchFlag & 1024 /* DYNAMIC_SLOTS */) {
+ // slot content that references values that might have changed,
+ // e.g. in a v-for
+ return true;
+ }
+ if (patchFlag & 16 /* FULL_PROPS */) {
+ if (!prevProps) {
+ return !!nextProps;
+ }
+ // presence of this flag indicates props are always non-null
+ return hasPropsChanged(prevProps, nextProps, emits);
+ }
+ else if (patchFlag & 8 /* PROPS */) {
+ const dynamicProps = nextVNode.dynamicProps;
+ for (let i = 0; i < dynamicProps.length; i++) {
+ const key = dynamicProps[i];
+ if (nextProps[key] !== prevProps[key] &&
+ !isEmitListener(emits, key)) {
+ return true;
+ }
+ }
+ }
+ }
+ else {
+ // this path is only taken by manually written render functions
+ // so presence of any children leads to a forced update
+ if (prevChildren || nextChildren) {
+ if (!nextChildren || !nextChildren.$stable) {
+ return true;
+ }
+ }
+ if (prevProps === nextProps) {
+ return false;
+ }
+ if (!prevProps) {
+ return !!nextProps;
+ }
+ if (!nextProps) {
+ return true;
+ }
+ return hasPropsChanged(prevProps, nextProps, emits);
+ }
+ return false;
+ }
+ function hasPropsChanged(prevProps, nextProps, emitsOptions) {
+ const nextKeys = Object.keys(nextProps);
+ if (nextKeys.length !== Object.keys(prevProps).length) {
+ return true;
+ }
+ for (let i = 0; i < nextKeys.length; i++) {
+ const key = nextKeys[i];
+ if (nextProps[key] !== prevProps[key] &&
+ !isEmitListener(emitsOptions, key)) {
+ return true;
+ }
+ }
+ return false;
+ }
+ function updateHOCHostEl({ vnode, parent }, el // HostNode
+ ) {
+ while (parent && parent.subTree === vnode) {
+ (vnode = parent.vnode).el = el;
+ parent = parent.parent;
+ }
+ }
+
+ const isSuspense = (type) => type.__isSuspense;
+ // Suspense exposes a component-like API, and is treated like a component
+ // in the compiler, but internally it's a special built-in type that hooks
+ // directly into the renderer.
+ const SuspenseImpl = {
+ // In order to make Suspense tree-shakable, we need to avoid importing it
+ // directly in the renderer. The renderer checks for the __isSuspense flag
+ // on a vnode's type and calls the `process` method, passing in renderer
+ // internals.
+ __isSuspense: true,
+ process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized,
+ // platform-specific impl passed from renderer
+ rendererInternals) {
+ if (n1 == null) {
+ mountSuspense(n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, rendererInternals);
+ }
+ else {
+ patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, rendererInternals);
+ }
+ },
+ hydrate: hydrateSuspense,
+ create: createSuspenseBoundary
+ };
+ // Force-casted public typing for h and TSX props inference
+ const Suspense = ( SuspenseImpl
+ );
+ function mountSuspense(vnode, container, anchor, parentComponent, parentSuspense, isSVG, optimized, rendererInternals) {
+ const { p: patch, o: { createElement } } = rendererInternals;
+ const hiddenContainer = createElement('div');
+ const suspense = (vnode.suspense = createSuspenseBoundary(vnode, parentSuspense, parentComponent, container, hiddenContainer, anchor, isSVG, optimized, rendererInternals));
+ // start mounting the content subtree in an off-dom container
+ patch(null, (suspense.pendingBranch = vnode.ssContent), hiddenContainer, null, parentComponent, suspense, isSVG);
+ // now check if we have encountered any async deps
+ if (suspense.deps > 0) {
+ // has async
+ // mount the fallback tree
+ patch(null, vnode.ssFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
+ isSVG);
+ setActiveBranch(suspense, vnode.ssFallback);
+ }
+ else {
+ // Suspense has no async deps. Just resolve.
+ suspense.resolve();
+ }
+ }
+ function patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, { p: patch, um: unmount, o: { createElement } }) {
+ const suspense = (n2.suspense = n1.suspense);
+ suspense.vnode = n2;
+ n2.el = n1.el;
+ const newBranch = n2.ssContent;
+ const newFallback = n2.ssFallback;
+ const { activeBranch, pendingBranch, isInFallback, isHydrating } = suspense;
+ if (pendingBranch) {
+ suspense.pendingBranch = newBranch;
+ if (isSameVNodeType(newBranch, pendingBranch)) {
+ // same root type but content may have changed.
+ patch(pendingBranch, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG);
+ if (suspense.deps <= 0) {
+ suspense.resolve();
+ }
+ else if (isInFallback) {
+ patch(activeBranch, newFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
+ isSVG);
+ setActiveBranch(suspense, newFallback);
+ }
+ }
+ else {
+ // toggled before pending tree is resolved
+ suspense.pendingId++;
+ if (isHydrating) {
+ // if toggled before hydration is finished, the current DOM tree is
+ // no longer valid. set it as the active branch so it will be unmounted
+ // when resolved
+ suspense.isHydrating = false;
+ suspense.activeBranch = pendingBranch;
+ }
+ else {
+ unmount(pendingBranch, parentComponent, suspense);
+ }
+ // increment pending ID. this is used to invalidate async callbacks
+ // reset suspense state
+ suspense.deps = 0;
+ // discard effects from pending branch
+ suspense.effects.length = 0;
+ // discard previous container
+ suspense.hiddenContainer = createElement('div');
+ if (isInFallback) {
+ // already in fallback state
+ patch(null, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG);
+ if (suspense.deps <= 0) {
+ suspense.resolve();
+ }
+ else {
+ patch(activeBranch, newFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
+ isSVG);
+ setActiveBranch(suspense, newFallback);
+ }
+ }
+ else if (activeBranch && isSameVNodeType(newBranch, activeBranch)) {
+ // toggled "back" to current active branch
+ patch(activeBranch, newBranch, container, anchor, parentComponent, suspense, isSVG);
+ // force resolve
+ suspense.resolve(true);
+ }
+ else {
+ // switched to a 3rd branch
+ patch(null, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG);
+ if (suspense.deps <= 0) {
+ suspense.resolve();
+ }
+ }
+ }
+ }
+ else {
+ if (activeBranch && isSameVNodeType(newBranch, activeBranch)) {
+ // root did not change, just normal patch
+ patch(activeBranch, newBranch, container, anchor, parentComponent, suspense, isSVG);
+ setActiveBranch(suspense, newBranch);
+ }
+ else {
+ // root node toggled
+ // invoke @pending event
+ const onPending = n2.props && n2.props.onPending;
+ if (isFunction(onPending)) {
+ onPending();
+ }
+ // mount pending branch in off-dom container
+ suspense.pendingBranch = newBranch;
+ suspense.pendingId++;
+ patch(null, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG);
+ if (suspense.deps <= 0) {
+ // incoming branch has no async deps, resolve now.
+ suspense.resolve();
+ }
+ else {
+ const { timeout, pendingId } = suspense;
+ if (timeout > 0) {
+ setTimeout(() => {
+ if (suspense.pendingId === pendingId) {
+ suspense.fallback(newFallback);
+ }
+ }, timeout);
+ }
+ else if (timeout === 0) {
+ suspense.fallback(newFallback);
+ }
+ }
+ }
+ }
+ }
+ let hasWarned = false;
+ function createSuspenseBoundary(vnode, parent, parentComponent, container, hiddenContainer, anchor, isSVG, optimized, rendererInternals, isHydrating = false) {
+ /* istanbul ignore if */
+ if ( !hasWarned) {
+ hasWarned = true;
+ // @ts-ignore `console.info` cannot be null error
+ console[console.info ? 'info' : 'log'](`<Suspense> is an experimental feature and its API will likely change.`);
+ }
+ const { p: patch, m: move, um: unmount, n: next, o: { parentNode, remove } } = rendererInternals;
+ const timeout = toNumber(vnode.props && vnode.props.timeout);
+ const suspense = {
+ vnode,
+ parent,
+ parentComponent,
+ isSVG,
+ container,
+ hiddenContainer,
+ anchor,
+ deps: 0,
+ pendingId: 0,
+ timeout: typeof timeout === 'number' ? timeout : -1,
+ activeBranch: null,
+ pendingBranch: null,
+ isInFallback: true,
+ isHydrating,
+ isUnmounted: false,
+ effects: [],
+ resolve(resume = false) {
+ {
+ if (!resume && !suspense.pendingBranch) {
+ throw new Error(`suspense.resolve() is called without a pending branch.`);
+ }
+ if (suspense.isUnmounted) {
+ throw new Error(`suspense.resolve() is called on an already unmounted suspense boundary.`);
+ }
+ }
+ const { vnode, activeBranch, pendingBranch, pendingId, effects, parentComponent, container } = suspense;
+ if (suspense.isHydrating) {
+ suspense.isHydrating = false;
+ }
+ else if (!resume) {
+ const delayEnter = activeBranch &&
+ pendingBranch.transition &&
+ pendingBranch.transition.mode === 'out-in';
+ if (delayEnter) {
+ activeBranch.transition.afterLeave = () => {
+ if (pendingId === suspense.pendingId) {
+ move(pendingBranch, container, anchor, 0 /* ENTER */);
+ }
+ };
+ }
+ // this is initial anchor on mount
+ let { anchor } = suspense;
+ // unmount current active tree
+ if (activeBranch) {
+ // if the fallback tree was mounted, it may have been moved
+ // as part of a parent suspense. get the latest anchor for insertion
+ anchor = next(activeBranch);
+ unmount(activeBranch, parentComponent, suspense, true);
+ }
+ if (!delayEnter) {
+ // move content from off-dom container to actual container
+ move(pendingBranch, container, anchor, 0 /* ENTER */);
+ }
+ }
+ setActiveBranch(suspense, pendingBranch);
+ suspense.pendingBranch = null;
+ suspense.isInFallback = false;
+ // flush buffered effects
+ // check if there is a pending parent suspense
+ let parent = suspense.parent;
+ let hasUnresolvedAncestor = false;
+ while (parent) {
+ if (parent.pendingBranch) {
+ // found a pending parent suspense, merge buffered post jobs
+ // into that parent
+ parent.effects.push(...effects);
+ hasUnresolvedAncestor = true;
+ break;
+ }
+ parent = parent.parent;
+ }
+ // no pending parent suspense, flush all jobs
+ if (!hasUnresolvedAncestor) {
+ queuePostFlushCb(effects);
+ }
+ suspense.effects = [];
+ // invoke @resolve event
+ const onResolve = vnode.props && vnode.props.onResolve;
+ if (isFunction(onResolve)) {
+ onResolve();
+ }
+ },
+ fallback(fallbackVNode) {
+ if (!suspense.pendingBranch) {
+ return;
+ }
+ const { vnode, activeBranch, parentComponent, container, isSVG } = suspense;
+ // invoke @fallback event
+ const onFallback = vnode.props && vnode.props.onFallback;
+ if (isFunction(onFallback)) {
+ onFallback();
+ }
+ const anchor = next(activeBranch);
+ const mountFallback = () => {
+ if (!suspense.isInFallback) {
+ return;
+ }
+ // mount the fallback tree
+ patch(null, fallbackVNode, container, anchor, parentComponent, null, // fallback tree will not have suspense context
+ isSVG);
+ setActiveBranch(suspense, fallbackVNode);
+ };
+ const delayEnter = fallbackVNode.transition && fallbackVNode.transition.mode === 'out-in';
+ if (delayEnter) {
+ activeBranch.transition.afterLeave = mountFallback;
+ }
+ // unmount current active branch
+ unmount(activeBranch, parentComponent, null, // no suspense so unmount hooks fire now
+ true // shouldRemove
+ );
+ suspense.isInFallback = true;
+ if (!delayEnter) {
+ mountFallback();
+ }
+ },
+ move(container, anchor, type) {
+ suspense.activeBranch &&
+ move(suspense.activeBranch, container, anchor, type);
+ suspense.container = container;
+ },
+ next() {
+ return suspense.activeBranch && next(suspense.activeBranch);
+ },
+ registerDep(instance, setupRenderEffect) {
+ const isInPendingSuspense = !!suspense.pendingBranch;
+ if (isInPendingSuspense) {
+ suspense.deps++;
+ }
+ const hydratedEl = instance.vnode.el;
+ instance
+ .asyncDep.catch(err => {
+ handleError(err, instance, 0 /* SETUP_FUNCTION */);
+ })
+ .then(asyncSetupResult => {
+ // retry when the setup() promise resolves.
+ // component may have been unmounted before resolve.
+ if (instance.isUnmounted ||
+ suspense.isUnmounted ||
+ suspense.pendingId !== instance.suspenseId) {
+ return;
+ }
+ // retry from this component
+ instance.asyncResolved = true;
+ const { vnode } = instance;
+ {
+ pushWarningContext(vnode);
+ }
+ handleSetupResult(instance, asyncSetupResult);
+ if (hydratedEl) {
+ // vnode may have been replaced if an update happened before the
+ // async dep is resolved.
+ vnode.el = hydratedEl;
+ }
+ const placeholder = !hydratedEl && instance.subTree.el;
+ setupRenderEffect(instance, vnode,
+ // component may have been moved before resolve.
+ // if this is not a hydration, instance.subTree will be the comment
+ // placeholder.
+ parentNode(hydratedEl || instance.subTree.el),
+ // anchor will not be used if this is hydration, so only need to
+ // consider the comment placeholder case.
+ hydratedEl ? null : next(instance.subTree), suspense, isSVG, optimized);
+ if (placeholder) {
+ remove(placeholder);
+ }
+ updateHOCHostEl(instance, vnode.el);
+ {
+ popWarningContext();
+ }
+ // only decrease deps count if suspense is not already resolved
+ if (isInPendingSuspense && --suspense.deps === 0) {
+ suspense.resolve();
+ }
+ });
+ },
+ unmount(parentSuspense, doRemove) {
+ suspense.isUnmounted = true;
+ if (suspense.activeBranch) {
+ unmount(suspense.activeBranch, parentComponent, parentSuspense, doRemove);
+ }
+ if (suspense.pendingBranch) {
+ unmount(suspense.pendingBranch, parentComponent, parentSuspense, doRemove);
+ }
+ }
+ };
+ return suspense;
+ }
+ function hydrateSuspense(node, vnode, parentComponent, parentSuspense, isSVG, optimized, rendererInternals, hydrateNode) {
+ /* eslint-disable no-restricted-globals */
+ const suspense = (vnode.suspense = createSuspenseBoundary(vnode, parentSuspense, parentComponent, node.parentNode, document.createElement('div'), null, isSVG, optimized, rendererInternals, true /* hydrating */));
+ // there are two possible scenarios for server-rendered suspense:
+ // - success: ssr content should be fully resolved
+ // - failure: ssr content should be the fallback branch.
+ // however, on the client we don't really know if it has failed or not
+ // attempt to hydrate the DOM assuming it has succeeded, but we still
+ // need to construct a suspense boundary first
+ const result = hydrateNode(node, (suspense.pendingBranch = vnode.ssContent), parentComponent, suspense, optimized);
+ if (suspense.deps === 0) {
+ suspense.resolve();
+ }
+ return result;
+ /* eslint-enable no-restricted-globals */
+ }
+ function normalizeSuspenseChildren(vnode) {
+ const { shapeFlag, children } = vnode;
+ let content;
+ let fallback;
+ if (shapeFlag & 32 /* SLOTS_CHILDREN */) {
+ content = normalizeSuspenseSlot(children.default);
+ fallback = normalizeSuspenseSlot(children.fallback);
+ }
+ else {
+ content = normalizeSuspenseSlot(children);
+ fallback = normalizeVNode(null);
+ }
+ return {
+ content,
+ fallback
+ };
+ }
+ function normalizeSuspenseSlot(s) {
+ if (isFunction(s)) {
+ s = s();
+ }
+ if (isArray(s)) {
+ const singleChild = filterSingleRoot(s);
+ if ( !singleChild) {
+ warn(`<Suspense> slots expect a single root node.`);
+ }
+ s = singleChild;
+ }
+ return normalizeVNode(s);
+ }
+ function queueEffectWithSuspense(fn, suspense) {
+ if (suspense && suspense.pendingBranch) {
+ if (isArray(fn)) {
+ suspense.effects.push(...fn);
+ }
+ else {
+ suspense.effects.push(fn);
+ }
+ }
+ else {
+ queuePostFlushCb(fn);
+ }
+ }
+ function setActiveBranch(suspense, branch) {
+ suspense.activeBranch = branch;
+ const { vnode, parentComponent } = suspense;
+ const el = (vnode.el = branch.el);
+ // in case suspense is the root node of a component,
+ // recursively update the HOC el
+ if (parentComponent && parentComponent.subTree === vnode) {
+ parentComponent.vnode.el = el;
+ updateHOCHostEl(parentComponent, el);
+ }
+ }
+
+ let isRenderingCompiledSlot = 0;
+ const setCompiledSlotRendering = (n) => (isRenderingCompiledSlot += n);
+ /**
+ * Compiler runtime helper for rendering `<slot/>`
+ * @private
+ */
+ function renderSlot(slots, name, props = {},
+ // this is not a user-facing function, so the fallback is always generated by
+ // the compiler and guaranteed to be a function returning an array
+ fallback) {
+ let slot = slots[name];
+ if ( slot && slot.length > 1) {
+ warn(`SSR-optimized slot function detected in a non-SSR-optimized render ` +
+ `function. You need to mark this component with $dynamic-slots in the ` +
+ `parent template.`);
+ slot = () => [];
+ }
+ // a compiled slot disables block tracking by default to avoid manual
+ // invocation interfering with template-based block tracking, but in
+ // `renderSlot` we can be sure that it's template-based so we can force
+ // enable it.
+ isRenderingCompiledSlot++;
+ openBlock();
+ const validSlotContent = slot && ensureValidVNode(slot(props));
+ const rendered = createBlock(Fragment, { key: props.key || `_${name}` }, validSlotContent || (fallback ? fallback() : []), validSlotContent && slots._ === 1 /* STABLE */
+ ? 64 /* STABLE_FRAGMENT */
+ : -2 /* BAIL */);
+ isRenderingCompiledSlot--;
+ return rendered;
+ }
+ function ensureValidVNode(vnodes) {
+ return vnodes.some(child => {
+ if (!isVNode(child))
+ return true;
+ if (child.type === Comment)
+ return false;
+ if (child.type === Fragment &&
+ !ensureValidVNode(child.children))
+ return false;
+ return true;
+ })
+ ? vnodes
+ : null;
+ }
+
+ /**
+ * Wrap a slot function to memoize current rendering instance
+ * @private
+ */
+ function withCtx(fn, ctx = currentRenderingInstance) {
+ if (!ctx)
+ return fn;
+ const renderFnWithContext = (...args) => {
+ // If a user calls a compiled slot inside a template expression (#1745), it
+ // can mess up block tracking, so by default we need to push a null block to
+ // avoid that. This isn't necessary if rendering a compiled `<slot>`.
+ if (!isRenderingCompiledSlot) {
+ openBlock(true /* null block that disables tracking */);
+ }
+ const owner = currentRenderingInstance;
+ setCurrentRenderingInstance(ctx);
+ const res = fn(...args);
+ setCurrentRenderingInstance(owner);
+ if (!isRenderingCompiledSlot) {
+ closeBlock();
+ }
+ return res;
+ };
+ renderFnWithContext._c = true;
+ return renderFnWithContext;
+ }
+
+ // SFC scoped style ID management.
+ let currentScopeId = null;
+ const scopeIdStack = [];
+ /**
+ * @private
+ */
+ function pushScopeId(id) {
+ scopeIdStack.push((currentScopeId = id));
+ }
+ /**
+ * @private
+ */
+ function popScopeId() {
+ scopeIdStack.pop();
+ currentScopeId = scopeIdStack[scopeIdStack.length - 1] || null;
+ }
+ /**
+ * @private
+ */
+ function withScopeId(id) {
+ return ((fn) => withCtx(function () {
+ pushScopeId(id);
+ const res = fn.apply(this, arguments);
+ popScopeId();
+ return res;
+ }));
+ }
+
+ function initProps(instance, rawProps, isStateful, // result of bitwise flag comparison
+ isSSR = false) {
+ const props = {};
+ const attrs = {};
+ def(attrs, InternalObjectKey, 1);
+ setFullProps(instance, rawProps, props, attrs);
+ // validation
+ {
+ validateProps(props, instance);
+ }
+ if (isStateful) {
+ // stateful
+ instance.props = isSSR ? props : shallowReactive(props);
+ }
+ else {
+ if (!instance.type.props) {
+ // functional w/ optional props, props === attrs
+ instance.props = attrs;
+ }
+ else {
+ // functional w/ declared props
+ instance.props = props;
+ }
+ }
+ instance.attrs = attrs;
+ }
+ function updateProps(instance, rawProps, rawPrevProps, optimized) {
+ const { props, attrs, vnode: { patchFlag } } = instance;
+ const rawCurrentProps = toRaw(props);
+ const [options] = instance.propsOptions;
+ if (
+ // always force full diff in dev
+ // - #1942 if hmr is enabled with sfc component
+ // - vite#872 non-sfc component used by sfc component
+ !(
+ (instance.type.__hmrId ||
+ (instance.parent && instance.parent.type.__hmrId))) &&
+ (optimized || patchFlag > 0) &&
+ !(patchFlag & 16 /* FULL_PROPS */)) {
+ if (patchFlag & 8 /* PROPS */) {
+ // Compiler-generated props & no keys change, just set the updated
+ // the props.
+ const propsToUpdate = instance.vnode.dynamicProps;
+ for (let i = 0; i < propsToUpdate.length; i++) {
+ const key = propsToUpdate[i];
+ // PROPS flag guarantees rawProps to be non-null
+ const value = rawProps[key];
+ if (options) {
+ // attr / props separation was done on init and will be consistent
+ // in this code path, so just check if attrs have it.
+ if (hasOwn(attrs, key)) {
+ attrs[key] = value;
+ }
+ else {
+ const camelizedKey = camelize(key);
+ props[camelizedKey] = resolvePropValue(options, rawCurrentProps, camelizedKey, value, instance);
+ }
+ }
+ else {
+ attrs[key] = value;
+ }
+ }
+ }
+ }
+ else {
+ // full props update.
+ setFullProps(instance, rawProps, props, attrs);
+ // in case of dynamic props, check if we need to delete keys from
+ // the props object
+ let kebabKey;
+ for (const key in rawCurrentProps) {
+ if (!rawProps ||
+ // for camelCase
+ (!hasOwn(rawProps, key) &&
+ // it's possible the original props was passed in as kebab-case
+ // and converted to camelCase (#955)
+ ((kebabKey = hyphenate(key)) === key || !hasOwn(rawProps, kebabKey)))) {
+ if (options) {
+ if (rawPrevProps &&
+ // for camelCase
+ (rawPrevProps[key] !== undefined ||
+ // for kebab-case
+ rawPrevProps[kebabKey] !== undefined)) {
+ props[key] = resolvePropValue(options, rawProps || EMPTY_OBJ, key, undefined, instance);
+ }
+ }
+ else {
+ delete props[key];
+ }
+ }
+ }
+ // in the case of functional component w/o props declaration, props and
+ // attrs point to the same object so it should already have been updated.
+ if (attrs !== rawCurrentProps) {
+ for (const key in attrs) {
+ if (!rawProps || !hasOwn(rawProps, key)) {
+ delete attrs[key];
+ }
+ }
+ }
+ }
+ // trigger updates for $attrs in case it's used in component slots
+ trigger(instance, "set" /* SET */, '$attrs');
+ if ( rawProps) {
+ validateProps(props, instance);
+ }
+ }
+ function setFullProps(instance, rawProps, props, attrs) {
+ const [options, needCastKeys] = instance.propsOptions;
+ if (rawProps) {
+ for (const key in rawProps) {
+ const value = rawProps[key];
+ // key, ref are reserved and never passed down
+ if (isReservedProp(key)) {
+ continue;
+ }
+ // prop option names are camelized during normalization, so to support
+ // kebab -> camel conversion here we need to camelize the key.
+ let camelKey;
+ if (options && hasOwn(options, (camelKey = camelize(key)))) {
+ props[camelKey] = value;
+ }
+ else if (!isEmitListener(instance.emitsOptions, key)) {
+ // Any non-declared (either as a prop or an emitted event) props are put
+ // into a separate `attrs` object for spreading. Make sure to preserve
+ // original key casing
+ attrs[key] = value;
+ }
+ }
+ }
+ if (needCastKeys) {
+ const rawCurrentProps = toRaw(props);
+ for (let i = 0; i < needCastKeys.length; i++) {
+ const key = needCastKeys[i];
+ props[key] = resolvePropValue(options, rawCurrentProps, key, rawCurrentProps[key], instance);
+ }
+ }
+ }
+ function resolvePropValue(options, props, key, value, instance) {
+ const opt = options[key];
+ if (opt != null) {
+ const hasDefault = hasOwn(opt, 'default');
+ // default values
+ if (hasDefault && value === undefined) {
+ const defaultValue = opt.default;
+ if (opt.type !== Function && isFunction(defaultValue)) {
+ setCurrentInstance(instance);
+ value = defaultValue(props);
+ setCurrentInstance(null);
+ }
+ else {
+ value = defaultValue;
+ }
+ }
+ // boolean casting
+ if (opt[0 /* shouldCast */]) {
+ if (!hasOwn(props, key) && !hasDefault) {
+ value = false;
+ }
+ else if (opt[1 /* shouldCastTrue */] &&
+ (value === '' || value === hyphenate(key))) {
+ value = true;
+ }
+ }
+ }
+ return value;
+ }
+ function normalizePropsOptions(comp, appContext, asMixin = false) {
+ if (!appContext.deopt && comp.__props) {
+ return comp.__props;
+ }
+ const raw = comp.props;
+ const normalized = {};
+ const needCastKeys = [];
+ // apply mixin/extends props
+ let hasExtends = false;
+ if ( !isFunction(comp)) {
+ const extendProps = (raw) => {
+ hasExtends = true;
+ const [props, keys] = normalizePropsOptions(raw, appContext, true);
+ extend(normalized, props);
+ if (keys)
+ needCastKeys.push(...keys);
+ };
+ if (!asMixin && appContext.mixins.length) {
+ appContext.mixins.forEach(extendProps);
+ }
+ if (comp.extends) {
+ extendProps(comp.extends);
+ }
+ if (comp.mixins) {
+ comp.mixins.forEach(extendProps);
+ }
+ }
+ if (!raw && !hasExtends) {
+ return (comp.__props = EMPTY_ARR);
+ }
+ if (isArray(raw)) {
+ for (let i = 0; i < raw.length; i++) {
+ if ( !isString(raw[i])) {
+ warn(`props must be strings when using array syntax.`, raw[i]);
+ }
+ const normalizedKey = camelize(raw[i]);
+ if (validatePropName(normalizedKey)) {
+ normalized[normalizedKey] = EMPTY_OBJ;
+ }
+ }
+ }
+ else if (raw) {
+ if ( !isObject(raw)) {
+ warn(`invalid props options`, raw);
+ }
+ for (const key in raw) {
+ const normalizedKey = camelize(key);
+ if (validatePropName(normalizedKey)) {
+ const opt = raw[key];
+ const prop = (normalized[normalizedKey] =
+ isArray(opt) || isFunction(opt) ? { type: opt } : opt);
+ if (prop) {
+ const booleanIndex = getTypeIndex(Boolean, prop.type);
+ const stringIndex = getTypeIndex(String, prop.type);
+ prop[0 /* shouldCast */] = booleanIndex > -1;
+ prop[1 /* shouldCastTrue */] =
+ stringIndex < 0 || booleanIndex < stringIndex;
+ // if the prop needs boolean casting or default value
+ if (booleanIndex > -1 || hasOwn(prop, 'default')) {
+ needCastKeys.push(normalizedKey);
+ }
+ }
+ }
+ }
+ }
+ return (comp.__props = [normalized, needCastKeys]);
+ }
+ function validatePropName(key) {
+ if (key[0] !== '$') {
+ return true;
+ }
+ else {
+ warn(`Invalid prop name: "${key}" is a reserved property.`);
+ }
+ return false;
+ }
+ // use function string name to check type constructors
+ // so that it works across vms / iframes.
+ function getType(ctor) {
+ const match = ctor && ctor.toString().match(/^\s*function (\w+)/);
+ return match ? match[1] : '';
+ }
+ function isSameType(a, b) {
+ return getType(a) === getType(b);
+ }
+ function getTypeIndex(type, expectedTypes) {
+ if (isArray(expectedTypes)) {
+ for (let i = 0, len = expectedTypes.length; i < len; i++) {
+ if (isSameType(expectedTypes[i], type)) {
+ return i;
+ }
+ }
+ }
+ else if (isFunction(expectedTypes)) {
+ return isSameType(expectedTypes, type) ? 0 : -1;
+ }
+ return -1;
+ }
+ /**
+ * dev only
+ */
+ function validateProps(props, instance) {
+ const rawValues = toRaw(props);
+ const options = instance.propsOptions[0];
+ for (const key in options) {
+ let opt = options[key];
+ if (opt == null)
+ continue;
+ validateProp(key, rawValues[key], opt, !hasOwn(rawValues, key));
+ }
+ }
+ /**
+ * dev only
+ */
+ function validateProp(name, value, prop, isAbsent) {
+ const { type, required, validator } = prop;
+ // required!
+ if (required && isAbsent) {
+ warn('Missing required prop: "' + name + '"');
+ return;
+ }
+ // missing but optional
+ if (value == null && !prop.required) {
+ return;
+ }
+ // type check
+ if (type != null && type !== true) {
+ let isValid = false;
+ const types = isArray(type) ? type : [type];
+ const expectedTypes = [];
+ // value is valid as long as one of the specified types match
+ for (let i = 0; i < types.length && !isValid; i++) {
+ const { valid, expectedType } = assertType(value, types[i]);
+ expectedTypes.push(expectedType || '');
+ isValid = valid;
+ }
+ if (!isValid) {
+ warn(getInvalidTypeMessage(name, value, expectedTypes));
+ return;
+ }
+ }
+ // custom validator
+ if (validator && !validator(value)) {
+ warn('Invalid prop: custom validator check failed for prop "' + name + '".');
+ }
+ }
+ const isSimpleType = /*#__PURE__*/ makeMap('String,Number,Boolean,Function,Symbol');
+ /**
+ * dev only
+ */
+ function assertType(value, type) {
+ let valid;
+ const expectedType = getType(type);
+ if (isSimpleType(expectedType)) {
+ const t = typeof value;
+ valid = t === expectedType.toLowerCase();
+ // for primitive wrapper objects
+ if (!valid && t === 'object') {
+ valid = value instanceof type;
+ }
+ }
+ else if (expectedType === 'Object') {
+ valid = isObject(value);
+ }
+ else if (expectedType === 'Array') {
+ valid = isArray(value);
+ }
+ else {
+ valid = value instanceof type;
+ }
+ return {
+ valid,
+ expectedType
+ };
+ }
+ /**
+ * dev only
+ */
+ function getInvalidTypeMessage(name, value, expectedTypes) {
+ let message = `Invalid prop: type check failed for prop "${name}".` +
+ ` Expected ${expectedTypes.map(capitalize).join(', ')}`;
+ const expectedType = expectedTypes[0];
+ const receivedType = toRawType(value);
+ const expectedValue = styleValue(value, expectedType);
+ const receivedValue = styleValue(value, receivedType);
+ // check if we need to specify expected value
+ if (expectedTypes.length === 1 &&
+ isExplicable(expectedType) &&
+ !isBoolean(expectedType, receivedType)) {
+ message += ` with value ${expectedValue}`;
+ }
+ message += `, got ${receivedType} `;
+ // check if we need to specify received value
+ if (isExplicable(receivedType)) {
+ message += `with value ${receivedValue}.`;
+ }
+ return message;
+ }
+ /**
+ * dev only
+ */
+ function styleValue(value, type) {
+ if (type === 'String') {
+ return `"${value}"`;
+ }
+ else if (type === 'Number') {
+ return `${Number(value)}`;
+ }
+ else {
+ return `${value}`;
+ }
+ }
+ /**
+ * dev only
+ */
+ function isExplicable(type) {
+ const explicitTypes = ['string', 'number', 'boolean'];
+ return explicitTypes.some(elem => type.toLowerCase() === elem);
+ }
+ /**
+ * dev only
+ */
+ function isBoolean(...args) {
+ return args.some(elem => elem.toLowerCase() === 'boolean');
+ }
+
+ function injectHook(type, hook, target = currentInstance, prepend = false) {
+ if (target) {
+ const hooks = target[type] || (target[type] = []);
+ // cache the error handling wrapper for injected hooks so the same hook
+ // can be properly deduped by the scheduler. "__weh" stands for "with error
+ // handling".
+ const wrappedHook = hook.__weh ||
+ (hook.__weh = (...args) => {
+ if (target.isUnmounted) {
+ return;
+ }
+ // disable tracking inside all lifecycle hooks
+ // since they can potentially be called inside effects.
+ pauseTracking();
+ // Set currentInstance during hook invocation.
+ // This assumes the hook does not synchronously trigger other hooks, which
+ // can only be false when the user does something really funky.
+ setCurrentInstance(target);
+ const res = callWithAsyncErrorHandling(hook, target, type, args);
+ setCurrentInstance(null);
+ resetTracking();
+ return res;
+ });
+ if (prepend) {
+ hooks.unshift(wrappedHook);
+ }
+ else {
+ hooks.push(wrappedHook);
+ }
+ return wrappedHook;
+ }
+ else {
+ const apiName = toHandlerKey(ErrorTypeStrings[type].replace(/ hook$/, ''));
+ warn(`${apiName} is called when there is no active component instance to be ` +
+ `associated with. ` +
+ `Lifecycle injection APIs can only be used during execution of setup().` +
+ ( ` If you are using async setup(), make sure to register lifecycle ` +
+ `hooks before the first await statement.`
+ ));
+ }
+ }
+ const createHook = (lifecycle) => (hook, target = currentInstance) =>
+ // post-create lifecycle registrations are noops during SSR
+ !isInSSRComponentSetup && injectHook(lifecycle, hook, target);
+ const onBeforeMount = createHook("bm" /* BEFORE_MOUNT */);
+ const onMounted = createHook("m" /* MOUNTED */);
+ const onBeforeUpdate = createHook("bu" /* BEFORE_UPDATE */);
+ const onUpdated = createHook("u" /* UPDATED */);
+ const onBeforeUnmount = createHook("bum" /* BEFORE_UNMOUNT */);
+ const onUnmounted = createHook("um" /* UNMOUNTED */);
+ const onRenderTriggered = createHook("rtg" /* RENDER_TRIGGERED */);
+ const onRenderTracked = createHook("rtc" /* RENDER_TRACKED */);
+ const onErrorCaptured = (hook, target = currentInstance) => {
+ injectHook("ec" /* ERROR_CAPTURED */, hook, target);
+ };
+
+ // Simple effect.
+ function watchEffect(effect, options) {
+ return doWatch(effect, null, options);
+ }
+ // initial value for watchers to trigger on undefined initial values
+ const INITIAL_WATCHER_VALUE = {};
+ // implementation
+ function watch(source, cb, options) {
+ if ( !isFunction(cb)) {
+ warn(`\`watch(fn, options?)\` signature has been moved to a separate API. ` +
+ `Use \`watchEffect(fn, options?)\` instead. \`watch\` now only ` +
+ `supports \`watch(source, cb, options?) signature.`);
+ }
+ return doWatch(source, cb, options);
+ }
+ function doWatch(source, cb, { immediate, deep, flush, onTrack, onTrigger } = EMPTY_OBJ, instance = currentInstance) {
+ if ( !cb) {
+ if (immediate !== undefined) {
+ warn(`watch() "immediate" option is only respected when using the ` +
+ `watch(source, callback, options?) signature.`);
+ }
+ if (deep !== undefined) {
+ warn(`watch() "deep" option is only respected when using the ` +
+ `watch(source, callback, options?) signature.`);
+ }
+ }
+ const warnInvalidSource = (s) => {
+ warn(`Invalid watch source: `, s, `A watch source can only be a getter/effect function, a ref, ` +
+ `a reactive object, or an array of these types.`);
+ };
+ let getter;
+ let forceTrigger = false;
+ if (isRef(source)) {
+ getter = () => source.value;
+ forceTrigger = !!source._shallow;
+ }
+ else if (isReactive(source)) {
+ getter = () => source;
+ deep = true;
+ }
+ else if (isArray(source)) {
+ getter = () => source.map(s => {
+ if (isRef(s)) {
+ return s.value;
+ }
+ else if (isReactive(s)) {
+ return traverse(s);
+ }
+ else if (isFunction(s)) {
+ return callWithErrorHandling(s, instance, 2 /* WATCH_GETTER */);
+ }
+ else {
+ warnInvalidSource(s);
+ }
+ });
+ }
+ else if (isFunction(source)) {
+ if (cb) {
+ // getter with cb
+ getter = () => callWithErrorHandling(source, instance, 2 /* WATCH_GETTER */);
+ }
+ else {
+ // no cb -> simple effect
+ getter = () => {
+ if (instance && instance.isUnmounted) {
+ return;
+ }
+ if (cleanup) {
+ cleanup();
+ }
+ return callWithErrorHandling(source, instance, 3 /* WATCH_CALLBACK */, [onInvalidate]);
+ };
+ }
+ }
+ else {
+ getter = NOOP;
+ warnInvalidSource(source);
+ }
+ if (cb && deep) {
+ const baseGetter = getter;
+ getter = () => traverse(baseGetter());
+ }
+ let cleanup;
+ const onInvalidate = (fn) => {
+ cleanup = runner.options.onStop = () => {
+ callWithErrorHandling(fn, instance, 4 /* WATCH_CLEANUP */);
+ };
+ };
+ let oldValue = isArray(source) ? [] : INITIAL_WATCHER_VALUE;
+ const job = () => {
+ if (!runner.active) {
+ return;
+ }
+ if (cb) {
+ // watch(source, cb)
+ const newValue = runner();
+ if (deep || forceTrigger || hasChanged(newValue, oldValue)) {
+ // cleanup before running cb again
+ if (cleanup) {
+ cleanup();
+ }
+ callWithAsyncErrorHandling(cb, instance, 3 /* WATCH_CALLBACK */, [
+ newValue,
+ // pass undefined as the old value when it's changed for the first time
+ oldValue === INITIAL_WATCHER_VALUE ? undefined : oldValue,
+ onInvalidate
+ ]);
+ oldValue = newValue;
+ }
+ }
+ else {
+ // watchEffect
+ runner();
+ }
+ };
+ // important: mark the job as a watcher callback so that scheduler knows
+ // it is allowed to self-trigger (#1727)
+ job.allowRecurse = !!cb;
+ let scheduler;
+ if (flush === 'sync') {
+ scheduler = job;
+ }
+ else if (flush === 'post') {
+ scheduler = () => queuePostRenderEffect(job, instance && instance.suspense);
+ }
+ else {
+ // default: 'pre'
+ scheduler = () => {
+ if (!instance || instance.isMounted) {
+ queuePreFlushCb(job);
+ }
+ else {
+ // with 'pre' option, the first call must happen before
+ // the component is mounted so it is called synchronously.
+ job();
+ }
+ };
+ }
+ const runner = effect(getter, {
+ lazy: true,
+ onTrack,
+ onTrigger,
+ scheduler
+ });
+ recordInstanceBoundEffect(runner, instance);
+ // initial run
+ if (cb) {
+ if (immediate) {
+ job();
+ }
+ else {
+ oldValue = runner();
+ }
+ }
+ else if (flush === 'post') {
+ queuePostRenderEffect(runner, instance && instance.suspense);
+ }
+ else {
+ runner();
+ }
+ return () => {
+ stop(runner);
+ if (instance) {
+ remove(instance.effects, runner);
+ }
+ };
+ }
+ // this.$watch
+ function instanceWatch(source, cb, options) {
+ const publicThis = this.proxy;
+ const getter = isString(source)
+ ? () => publicThis[source]
+ : source.bind(publicThis);
+ return doWatch(getter, cb.bind(publicThis), options, this);
+ }
+ function traverse(value, seen = new Set()) {
+ if (!isObject(value) || seen.has(value)) {
+ return value;
+ }
+ seen.add(value);
+ if (isRef(value)) {
+ traverse(value.value, seen);
+ }
+ else if (isArray(value)) {
+ for (let i = 0; i < value.length; i++) {
+ traverse(value[i], seen);
+ }
+ }
+ else if (isSet(value) || isMap(value)) {
+ value.forEach((v) => {
+ traverse(v, seen);
+ });
+ }
+ else {
+ for (const key in value) {
+ traverse(value[key], seen);
+ }
+ }
+ return value;
+ }
+
+ function useTransitionState() {
+ const state = {
+ isMounted: false,
+ isLeaving: false,
+ isUnmounting: false,
+ leavingVNodes: new Map()
+ };
+ onMounted(() => {
+ state.isMounted = true;
+ });
+ onBeforeUnmount(() => {
+ state.isUnmounting = true;
+ });
+ return state;
+ }
+ const TransitionHookValidator = [Function, Array];
+ const BaseTransitionImpl = {
+ name: `BaseTransition`,
+ props: {
+ mode: String,
+ appear: Boolean,
+ persisted: Boolean,
+ // enter
+ onBeforeEnter: TransitionHookValidator,
+ onEnter: TransitionHookValidator,
+ onAfterEnter: TransitionHookValidator,
+ onEnterCancelled: TransitionHookValidator,
+ // leave
+ onBeforeLeave: TransitionHookValidator,
+ onLeave: TransitionHookValidator,
+ onAfterLeave: TransitionHookValidator,
+ onLeaveCancelled: TransitionHookValidator,
+ // appear
+ onBeforeAppear: TransitionHookValidator,
+ onAppear: TransitionHookValidator,
+ onAfterAppear: TransitionHookValidator,
+ onAppearCancelled: TransitionHookValidator
+ },
+ setup(props, { slots }) {
+ const instance = getCurrentInstance();
+ const state = useTransitionState();
+ let prevTransitionKey;
+ return () => {
+ const children = slots.default && getTransitionRawChildren(slots.default(), true);
+ if (!children || !children.length) {
+ return;
+ }
+ // warn multiple elements
+ if ( children.length > 1) {
+ warn('<transition> can only be used on a single element or component. Use ' +
+ '<transition-group> for lists.');
+ }
+ // there's no need to track reactivity for these props so use the raw
+ // props for a bit better perf
+ const rawProps = toRaw(props);
+ const { mode } = rawProps;
+ // check mode
+ if ( mode && !['in-out', 'out-in', 'default'].includes(mode)) {
+ warn(`invalid <transition> mode: ${mode}`);
+ }
+ // at this point children has a guaranteed length of 1.
+ const child = children[0];
+ if (state.isLeaving) {
+ return emptyPlaceholder(child);
+ }
+ // in the case of <transition><keep-alive/></transition>, we need to
+ // compare the type of the kept-alive children.
+ const innerChild = getKeepAliveChild(child);
+ if (!innerChild) {
+ return emptyPlaceholder(child);
+ }
+ const enterHooks = resolveTransitionHooks(innerChild, rawProps, state, instance);
+ setTransitionHooks(innerChild, enterHooks);
+ const oldChild = instance.subTree;
+ const oldInnerChild = oldChild && getKeepAliveChild(oldChild);
+ let transitionKeyChanged = false;
+ const { getTransitionKey } = innerChild.type;
+ if (getTransitionKey) {
+ const key = getTransitionKey();
+ if (prevTransitionKey === undefined) {
+ prevTransitionKey = key;
+ }
+ else if (key !== prevTransitionKey) {
+ prevTransitionKey = key;
+ transitionKeyChanged = true;
+ }
+ }
+ // handle mode
+ if (oldInnerChild &&
+ oldInnerChild.type !== Comment &&
+ (!isSameVNodeType(innerChild, oldInnerChild) || transitionKeyChanged)) {
+ const leavingHooks = resolveTransitionHooks(oldInnerChild, rawProps, state, instance);
+ // update old tree's hooks in case of dynamic transition
+ setTransitionHooks(oldInnerChild, leavingHooks);
+ // switching between different views
+ if (mode === 'out-in') {
+ state.isLeaving = true;
+ // return placeholder node and queue update when leave finishes
+ leavingHooks.afterLeave = () => {
+ state.isLeaving = false;
+ instance.update();
+ };
+ return emptyPlaceholder(child);
+ }
+ else if (mode === 'in-out') {
+ leavingHooks.delayLeave = (el, earlyRemove, delayedLeave) => {
+ const leavingVNodesCache = getLeavingNodesForType(state, oldInnerChild);
+ leavingVNodesCache[String(oldInnerChild.key)] = oldInnerChild;
+ // early removal callback
+ el._leaveCb = () => {
+ earlyRemove();
+ el._leaveCb = undefined;
+ delete enterHooks.delayedLeave;
+ };
+ enterHooks.delayedLeave = delayedLeave;
+ };
+ }
+ }
+ return child;
+ };
+ }
+ };
+ // export the public type for h/tsx inference
+ // also to avoid inline import() in generated d.ts files
+ const BaseTransition = BaseTransitionImpl;
+ function getLeavingNodesForType(state, vnode) {
+ const { leavingVNodes } = state;
+ let leavingVNodesCache = leavingVNodes.get(vnode.type);
+ if (!leavingVNodesCache) {
+ leavingVNodesCache = Object.create(null);
+ leavingVNodes.set(vnode.type, leavingVNodesCache);
+ }
+ return leavingVNodesCache;
+ }
+ // The transition hooks are attached to the vnode as vnode.transition
+ // and will be called at appropriate timing in the renderer.
+ function resolveTransitionHooks(vnode, props, state, instance) {
+ const { appear, mode, persisted = false, onBeforeEnter, onEnter, onAfterEnter, onEnterCancelled, onBeforeLeave, onLeave, onAfterLeave, onLeaveCancelled, onBeforeAppear, onAppear, onAfterAppear, onAppearCancelled } = props;
+ const key = String(vnode.key);
+ const leavingVNodesCache = getLeavingNodesForType(state, vnode);
+ const callHook = (hook, args) => {
+ hook &&
+ callWithAsyncErrorHandling(hook, instance, 9 /* TRANSITION_HOOK */, args);
+ };
+ const hooks = {
+ mode,
+ persisted,
+ beforeEnter(el) {
+ let hook = onBeforeEnter;
+ if (!state.isMounted) {
+ if (appear) {
+ hook = onBeforeAppear || onBeforeEnter;
+ }
+ else {
+ return;
+ }
+ }
+ // for same element (v-show)
+ if (el._leaveCb) {
+ el._leaveCb(true /* cancelled */);
+ }
+ // for toggled element with same key (v-if)
+ const leavingVNode = leavingVNodesCache[key];
+ if (leavingVNode &&
+ isSameVNodeType(vnode, leavingVNode) &&
+ leavingVNode.el._leaveCb) {
+ // force early removal (not cancelled)
+ leavingVNode.el._leaveCb();
+ }
+ callHook(hook, [el]);
+ },
+ enter(el) {
+ let hook = onEnter;
+ let afterHook = onAfterEnter;
+ let cancelHook = onEnterCancelled;
+ if (!state.isMounted) {
+ if (appear) {
+ hook = onAppear || onEnter;
+ afterHook = onAfterAppear || onAfterEnter;
+ cancelHook = onAppearCancelled || onEnterCancelled;
+ }
+ else {
+ return;
+ }
+ }
+ let called = false;
+ const done = (el._enterCb = (cancelled) => {
+ if (called)
+ return;
+ called = true;
+ if (cancelled) {
+ callHook(cancelHook, [el]);
+ }
+ else {
+ callHook(afterHook, [el]);
+ }
+ if (hooks.delayedLeave) {
+ hooks.delayedLeave();
+ }
+ el._enterCb = undefined;
+ });
+ if (hook) {
+ hook(el, done);
+ if (hook.length <= 1) {
+ done();
+ }
+ }
+ else {
+ done();
+ }
+ },
+ leave(el, remove) {
+ const key = String(vnode.key);
+ if (el._enterCb) {
+ el._enterCb(true /* cancelled */);
+ }
+ if (state.isUnmounting) {
+ return remove();
+ }
+ callHook(onBeforeLeave, [el]);
+ let called = false;
+ const done = (el._leaveCb = (cancelled) => {
+ if (called)
+ return;
+ called = true;
+ remove();
+ if (cancelled) {
+ callHook(onLeaveCancelled, [el]);
+ }
+ else {
+ callHook(onAfterLeave, [el]);
+ }
+ el._leaveCb = undefined;
+ if (leavingVNodesCache[key] === vnode) {
+ delete leavingVNodesCache[key];
+ }
+ });
+ leavingVNodesCache[key] = vnode;
+ if (onLeave) {
+ onLeave(el, done);
+ if (onLeave.length <= 1) {
+ done();
+ }
+ }
+ else {
+ done();
+ }
+ },
+ clone(vnode) {
+ return resolveTransitionHooks(vnode, props, state, instance);
+ }
+ };
+ return hooks;
+ }
+ // the placeholder really only handles one special case: KeepAlive
+ // in the case of a KeepAlive in a leave phase we need to return a KeepAlive
+ // placeholder with empty content to avoid the KeepAlive instance from being
+ // unmounted.
+ function emptyPlaceholder(vnode) {
+ if (isKeepAlive(vnode)) {
+ vnode = cloneVNode(vnode);
+ vnode.children = null;
+ return vnode;
+ }
+ }
+ function getKeepAliveChild(vnode) {
+ return isKeepAlive(vnode)
+ ? vnode.children
+ ? vnode.children[0]
+ : undefined
+ : vnode;
+ }
+ function setTransitionHooks(vnode, hooks) {
+ if (vnode.shapeFlag & 6 /* COMPONENT */ && vnode.component) {
+ setTransitionHooks(vnode.component.subTree, hooks);
+ }
+ else if ( vnode.shapeFlag & 128 /* SUSPENSE */) {
+ vnode.ssContent.transition = hooks.clone(vnode.ssContent);
+ vnode.ssFallback.transition = hooks.clone(vnode.ssFallback);
+ }
+ else {
+ vnode.transition = hooks;
+ }
+ }
+ function getTransitionRawChildren(children, keepComment = false) {
+ let ret = [];
+ let keyedFragmentCount = 0;
+ for (let i = 0; i < children.length; i++) {
+ const child = children[i];
+ // handle fragment children case, e.g. v-for
+ if (child.type === Fragment) {
+ if (child.patchFlag & 128 /* KEYED_FRAGMENT */)
+ keyedFragmentCount++;
+ ret = ret.concat(getTransitionRawChildren(child.children, keepComment));
+ }
+ // comment placeholders should be skipped, e.g. v-if
+ else if (keepComment || child.type !== Comment) {
+ ret.push(child);
+ }
+ }
+ // #1126 if a transition children list contains multiple sub fragments, these
+ // fragments will be merged into a flat children array. Since each v-for
+ // fragment may contain different static bindings inside, we need to de-op
+ // these children to force full diffs to ensure correct behavior.
+ if (keyedFragmentCount > 1) {
+ for (let i = 0; i < ret.length; i++) {
+ ret[i].patchFlag = -2 /* BAIL */;
+ }
+ }
+ return ret;
+ }
+
+ const isKeepAlive = (vnode) => vnode.type.__isKeepAlive;
+ const KeepAliveImpl = {
+ name: `KeepAlive`,
+ // Marker for special handling inside the renderer. We are not using a ===
+ // check directly on KeepAlive in the renderer, because importing it directly
+ // would prevent it from being tree-shaken.
+ __isKeepAlive: true,
+ inheritRef: true,
+ props: {
+ include: [String, RegExp, Array],
+ exclude: [String, RegExp, Array],
+ max: [String, Number]
+ },
+ setup(props, { slots }) {
+ const cache = new Map();
+ const keys = new Set();
+ let current = null;
+ const instance = getCurrentInstance();
+ const parentSuspense = instance.suspense;
+ // KeepAlive communicates with the instantiated renderer via the
+ // ctx where the renderer passes in its internals,
+ // and the KeepAlive instance exposes activate/deactivate implementations.
+ // The whole point of this is to avoid importing KeepAlive directly in the
+ // renderer to facilitate tree-shaking.
+ const sharedContext = instance.ctx;
+ const { renderer: { p: patch, m: move, um: _unmount, o: { createElement } } } = sharedContext;
+ const storageContainer = createElement('div');
+ sharedContext.activate = (vnode, container, anchor, isSVG, optimized) => {
+ const instance = vnode.component;
+ move(vnode, container, anchor, 0 /* ENTER */, parentSuspense);
+ // in case props have changed
+ patch(instance.vnode, vnode, container, anchor, instance, parentSuspense, isSVG, optimized);
+ queuePostRenderEffect(() => {
+ instance.isDeactivated = false;
+ if (instance.a) {
+ invokeArrayFns(instance.a);
+ }
+ const vnodeHook = vnode.props && vnode.props.onVnodeMounted;
+ if (vnodeHook) {
+ invokeVNodeHook(vnodeHook, instance.parent, vnode);
+ }
+ }, parentSuspense);
+ };
+ sharedContext.deactivate = (vnode) => {
+ const instance = vnode.component;
+ move(vnode, storageContainer, null, 1 /* LEAVE */, parentSuspense);
+ queuePostRenderEffect(() => {
+ if (instance.da) {
+ invokeArrayFns(instance.da);
+ }
+ const vnodeHook = vnode.props && vnode.props.onVnodeUnmounted;
+ if (vnodeHook) {
+ invokeVNodeHook(vnodeHook, instance.parent, vnode);
+ }
+ instance.isDeactivated = true;
+ }, parentSuspense);
+ };
+ function unmount(vnode) {
+ // reset the shapeFlag so it can be properly unmounted
+ resetShapeFlag(vnode);
+ _unmount(vnode, instance, parentSuspense);
+ }
+ function pruneCache(filter) {
+ cache.forEach((vnode, key) => {
+ const name = getComponentName(vnode.type);
+ if (name && (!filter || !filter(name))) {
+ pruneCacheEntry(key);
+ }
+ });
+ }
+ function pruneCacheEntry(key) {
+ const cached = cache.get(key);
+ if (!current || cached.type !== current.type) {
+ unmount(cached);
+ }
+ else if (current) {
+ // current active instance should no longer be kept-alive.
+ // we can't unmount it now but it might be later, so reset its flag now.
+ resetShapeFlag(current);
+ }
+ cache.delete(key);
+ keys.delete(key);
+ }
+ // prune cache on include/exclude prop change
+ watch(() => [props.include, props.exclude], ([include, exclude]) => {
+ include && pruneCache(name => matches(include, name));
+ exclude && pruneCache(name => !matches(exclude, name));
+ },
+ // prune post-render after `current` has been updated
+ { flush: 'post', deep: true });
+ // cache sub tree after render
+ let pendingCacheKey = null;
+ const cacheSubtree = () => {
+ // fix #1621, the pendingCacheKey could be 0
+ if (pendingCacheKey != null) {
+ cache.set(pendingCacheKey, getInnerChild(instance.subTree));
+ }
+ };
+ onMounted(cacheSubtree);
+ onUpdated(cacheSubtree);
+ onBeforeUnmount(() => {
+ cache.forEach(cached => {
+ const { subTree, suspense } = instance;
+ const vnode = getInnerChild(subTree);
+ if (cached.type === vnode.type) {
+ // current instance will be unmounted as part of keep-alive's unmount
+ resetShapeFlag(vnode);
+ // but invoke its deactivated hook here
+ const da = vnode.component.da;
+ da && queuePostRenderEffect(da, suspense);
+ return;
+ }
+ unmount(cached);
+ });
+ });
+ return () => {
+ pendingCacheKey = null;
+ if (!slots.default) {
+ return null;
+ }
+ const children = slots.default();
+ const rawVNode = children[0];
+ if (children.length > 1) {
+ {
+ warn(`KeepAlive should contain exactly one component child.`);
+ }
+ current = null;
+ return children;
+ }
+ else if (!isVNode(rawVNode) ||
+ (!(rawVNode.shapeFlag & 4 /* STATEFUL_COMPONENT */) &&
+ !(rawVNode.shapeFlag & 128 /* SUSPENSE */))) {
+ current = null;
+ return rawVNode;
+ }
+ let vnode = getInnerChild(rawVNode);
+ const comp = vnode.type;
+ const name = getComponentName(comp);
+ const { include, exclude, max } = props;
+ if ((include && (!name || !matches(include, name))) ||
+ (exclude && name && matches(exclude, name))) {
+ current = vnode;
+ return rawVNode;
+ }
+ const key = vnode.key == null ? comp : vnode.key;
+ const cachedVNode = cache.get(key);
+ // clone vnode if it's reused because we are going to mutate it
+ if (vnode.el) {
+ vnode = cloneVNode(vnode);
+ if (rawVNode.shapeFlag & 128 /* SUSPENSE */) {
+ rawVNode.ssContent = vnode;
+ }
+ }
+ // #1513 it's possible for the returned vnode to be cloned due to attr
+ // fallthrough or scopeId, so the vnode here may not be the final vnode
+ // that is mounted. Instead of caching it directly, we store the pending
+ // key and cache `instance.subTree` (the normalized vnode) in
+ // beforeMount/beforeUpdate hooks.
+ pendingCacheKey = key;
+ if (cachedVNode) {
+ // copy over mounted state
+ vnode.el = cachedVNode.el;
+ vnode.component = cachedVNode.component;
+ if (vnode.transition) {
+ // recursively update transition hooks on subTree
+ setTransitionHooks(vnode, vnode.transition);
+ }
+ // avoid vnode being mounted as fresh
+ vnode.shapeFlag |= 512 /* COMPONENT_KEPT_ALIVE */;
+ // make this key the freshest
+ keys.delete(key);
+ keys.add(key);
+ }
+ else {
+ keys.add(key);
+ // prune oldest entry
+ if (max && keys.size > parseInt(max, 10)) {
+ pruneCacheEntry(keys.values().next().value);
+ }
+ }
+ // avoid vnode being unmounted
+ vnode.shapeFlag |= 256 /* COMPONENT_SHOULD_KEEP_ALIVE */;
+ current = vnode;
+ return rawVNode;
+ };
+ }
+ };
+ // export the public type for h/tsx inference
+ // also to avoid inline import() in generated d.ts files
+ const KeepAlive = KeepAliveImpl;
+ function matches(pattern, name) {
+ if (isArray(pattern)) {
+ return pattern.some((p) => matches(p, name));
+ }
+ else if (isString(pattern)) {
+ return pattern.split(',').indexOf(name) > -1;
+ }
+ else if (pattern.test) {
+ return pattern.test(name);
+ }
+ /* istanbul ignore next */
+ return false;
+ }
+ function onActivated(hook, target) {
+ registerKeepAliveHook(hook, "a" /* ACTIVATED */, target);
+ }
+ function onDeactivated(hook, target) {
+ registerKeepAliveHook(hook, "da" /* DEACTIVATED */, target);
+ }
+ function registerKeepAliveHook(hook, type, target = currentInstance) {
+ // cache the deactivate branch check wrapper for injected hooks so the same
+ // hook can be properly deduped by the scheduler. "__wdc" stands for "with
+ // deactivation check".
+ const wrappedHook = hook.__wdc ||
+ (hook.__wdc = () => {
+ // only fire the hook if the target instance is NOT in a deactivated branch.
+ let current = target;
+ while (current) {
+ if (current.isDeactivated) {
+ return;
+ }
+ current = current.parent;
+ }
+ hook();
+ });
+ injectHook(type, wrappedHook, target);
+ // In addition to registering it on the target instance, we walk up the parent
+ // chain and register it on all ancestor instances that are keep-alive roots.
+ // This avoids the need to walk the entire component tree when invoking these
+ // hooks, and more importantly, avoids the need to track child components in
+ // arrays.
+ if (target) {
+ let current = target.parent;
+ while (current && current.parent) {
+ if (isKeepAlive(current.parent.vnode)) {
+ injectToKeepAliveRoot(wrappedHook, type, target, current);
+ }
+ current = current.parent;
+ }
+ }
+ }
+ function injectToKeepAliveRoot(hook, type, target, keepAliveRoot) {
+ // injectHook wraps the original for error handling, so make sure to remove
+ // the wrapped version.
+ const injected = injectHook(type, hook, keepAliveRoot, true /* prepend */);
+ onUnmounted(() => {
+ remove(keepAliveRoot[type], injected);
+ }, target);
+ }
+ function resetShapeFlag(vnode) {
+ let shapeFlag = vnode.shapeFlag;
+ if (shapeFlag & 256 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
+ shapeFlag -= 256 /* COMPONENT_SHOULD_KEEP_ALIVE */;
+ }
+ if (shapeFlag & 512 /* COMPONENT_KEPT_ALIVE */) {
+ shapeFlag -= 512 /* COMPONENT_KEPT_ALIVE */;
+ }
+ vnode.shapeFlag = shapeFlag;
+ }
+ function getInnerChild(vnode) {
+ return vnode.shapeFlag & 128 /* SUSPENSE */ ? vnode.ssContent : vnode;
+ }
+
+ const isInternalKey = (key) => key[0] === '_' || key === '$stable';
+ const normalizeSlotValue = (value) => isArray(value)
+ ? value.map(normalizeVNode)
+ : [normalizeVNode(value)];
+ const normalizeSlot = (key, rawSlot, ctx) => withCtx((props) => {
+ if ( currentInstance) {
+ warn(`Slot "${key}" invoked outside of the render function: ` +
+ `this will not track dependencies used in the slot. ` +
+ `Invoke the slot function inside the render function instead.`);
+ }
+ return normalizeSlotValue(rawSlot(props));
+ }, ctx);
+ const normalizeObjectSlots = (rawSlots, slots) => {
+ const ctx = rawSlots._ctx;
+ for (const key in rawSlots) {
+ if (isInternalKey(key))
+ continue;
+ const value = rawSlots[key];
+ if (isFunction(value)) {
+ slots[key] = normalizeSlot(key, value, ctx);
+ }
+ else if (value != null) {
+ {
+ warn(`Non-function value encountered for slot "${key}". ` +
+ `Prefer function slots for better performance.`);
+ }
+ const normalized = normalizeSlotValue(value);
+ slots[key] = () => normalized;
+ }
+ }
+ };
+ const normalizeVNodeSlots = (instance, children) => {
+ if ( !isKeepAlive(instance.vnode)) {
+ warn(`Non-function value encountered for default slot. ` +
+ `Prefer function slots for better performance.`);
+ }
+ const normalized = normalizeSlotValue(children);
+ instance.slots.default = () => normalized;
+ };
+ const initSlots = (instance, children) => {
+ if (instance.vnode.shapeFlag & 32 /* SLOTS_CHILDREN */) {
+ const type = children._;
+ if (type) {
+ instance.slots = children;
+ // make compiler marker non-enumerable
+ def(children, '_', type);
+ }
+ else {
+ normalizeObjectSlots(children, (instance.slots = {}));
+ }
+ }
+ else {
+ instance.slots = {};
+ if (children) {
+ normalizeVNodeSlots(instance, children);
+ }
+ }
+ def(instance.slots, InternalObjectKey, 1);
+ };
+ const updateSlots = (instance, children) => {
+ const { vnode, slots } = instance;
+ let needDeletionCheck = true;
+ let deletionComparisonTarget = EMPTY_OBJ;
+ if (vnode.shapeFlag & 32 /* SLOTS_CHILDREN */) {
+ const type = children._;
+ if (type) {
+ // compiled slots.
+ if ( isHmrUpdating) {
+ // Parent was HMR updated so slot content may have changed.
+ // force update slots and mark instance for hmr as well
+ extend(slots, children);
+ }
+ else if (type === 1 /* STABLE */) {
+ // compiled AND stable.
+ // no need to update, and skip stale slots removal.
+ needDeletionCheck = false;
+ }
+ else {
+ // compiled but dynamic (v-if/v-for on slots) - update slots, but skip
+ // normalization.
+ extend(slots, children);
+ }
+ }
+ else {
+ needDeletionCheck = !children.$stable;
+ normalizeObjectSlots(children, slots);
+ }
+ deletionComparisonTarget = children;
+ }
+ else if (children) {
+ // non slot object children (direct value) passed to a component
+ normalizeVNodeSlots(instance, children);
+ deletionComparisonTarget = { default: 1 };
+ }
+ // delete stale slots
+ if (needDeletionCheck) {
+ for (const key in slots) {
+ if (!isInternalKey(key) && !(key in deletionComparisonTarget)) {
+ delete slots[key];
+ }
+ }
+ }
+ };
+
+ /**
+ Runtime helper for applying directives to a vnode. Example usage:
+
+ const comp = resolveComponent('comp')
+ const foo = resolveDirective('foo')
+ const bar = resolveDirective('bar')
+
+ return withDirectives(h(comp), [
+ [foo, this.x],
+ [bar, this.y]
+ ])
+ */
+ const isBuiltInDirective = /*#__PURE__*/ makeMap('bind,cloak,else-if,else,for,html,if,model,on,once,pre,show,slot,text');
+ function validateDirectiveName(name) {
+ if (isBuiltInDirective(name)) {
+ warn('Do not use built-in directive ids as custom directive id: ' + name);
+ }
+ }
+ /**
+ * Adds directives to a VNode.
+ */
+ function withDirectives(vnode, directives) {
+ const internalInstance = currentRenderingInstance;
+ if (internalInstance === null) {
+ warn(`withDirectives can only be used inside render functions.`);
+ return vnode;
+ }
+ const instance = internalInstance.proxy;
+ const bindings = vnode.dirs || (vnode.dirs = []);
+ for (let i = 0; i < directives.length; i++) {
+ let [dir, value, arg, modifiers = EMPTY_OBJ] = directives[i];
+ if (isFunction(dir)) {
+ dir = {
+ mounted: dir,
+ updated: dir
+ };
+ }
+ bindings.push({
+ dir,
+ instance,
+ value,
+ oldValue: void 0,
+ arg,
+ modifiers
+ });
+ }
+ return vnode;
+ }
+ function invokeDirectiveHook(vnode, prevVNode, instance, name) {
+ const bindings = vnode.dirs;
+ const oldBindings = prevVNode && prevVNode.dirs;
+ for (let i = 0; i < bindings.length; i++) {
+ const binding = bindings[i];
+ if (oldBindings) {
+ binding.oldValue = oldBindings[i].value;
+ }
+ const hook = binding.dir[name];
+ if (hook) {
+ callWithAsyncErrorHandling(hook, instance, 8 /* DIRECTIVE_HOOK */, [
+ vnode.el,
+ binding,
+ vnode,
+ prevVNode
+ ]);
+ }
+ }
+ }
+
+ function createAppContext() {
+ return {
+ app: null,
+ config: {
+ isNativeTag: NO,
+ performance: false,
+ globalProperties: {},
+ optionMergeStrategies: {},
+ isCustomElement: NO,
+ errorHandler: undefined,
+ warnHandler: undefined
+ },
+ mixins: [],
+ components: {},
+ directives: {},
+ provides: Object.create(null)
+ };
+ }
+ let uid$1 = 0;
+ function createAppAPI(render, hydrate) {
+ return function createApp(rootComponent, rootProps = null) {
+ if (rootProps != null && !isObject(rootProps)) {
+ warn(`root props passed to app.mount() must be an object.`);
+ rootProps = null;
+ }
+ const context = createAppContext();
+ const installedPlugins = new Set();
+ let isMounted = false;
+ const app = (context.app = {
+ _uid: uid$1++,
+ _component: rootComponent,
+ _props: rootProps,
+ _container: null,
+ _context: context,
+ version,
+ get config() {
+ return context.config;
+ },
+ set config(v) {
+ {
+ warn(`app.config cannot be replaced. Modify individual options instead.`);
+ }
+ },
+ use(plugin, ...options) {
+ if (installedPlugins.has(plugin)) {
+ warn(`Plugin has already been applied to target app.`);
+ }
+ else if (plugin && isFunction(plugin.install)) {
+ installedPlugins.add(plugin);
+ plugin.install(app, ...options);
+ }
+ else if (isFunction(plugin)) {
+ installedPlugins.add(plugin);
+ plugin(app, ...options);
+ }
+ else {
+ warn(`A plugin must either be a function or an object with an "install" ` +
+ `function.`);
+ }
+ return app;
+ },
+ mixin(mixin) {
+ {
+ if (!context.mixins.includes(mixin)) {
+ context.mixins.push(mixin);
+ // global mixin with props/emits de-optimizes props/emits
+ // normalization caching.
+ if (mixin.props || mixin.emits) {
+ context.deopt = true;
+ }
+ }
+ else {
+ warn('Mixin has already been applied to target app' +
+ (mixin.name ? `: ${mixin.name}` : ''));
+ }
+ }
+ return app;
+ },
+ component(name, component) {
+ {
+ validateComponentName(name, context.config);
+ }
+ if (!component) {
+ return context.components[name];
+ }
+ if ( context.components[name]) {
+ warn(`Component "${name}" has already been registered in target app.`);
+ }
+ context.components[name] = component;
+ return app;
+ },
+ directive(name, directive) {
+ {
+ validateDirectiveName(name);
+ }
+ if (!directive) {
+ return context.directives[name];
+ }
+ if ( context.directives[name]) {
+ warn(`Directive "${name}" has already been registered in target app.`);
+ }
+ context.directives[name] = directive;
+ return app;
+ },
+ mount(rootContainer, isHydrate) {
+ if (!isMounted) {
+ const vnode = createVNode(rootComponent, rootProps);
+ // store app context on the root VNode.
+ // this will be set on the root instance on initial mount.
+ vnode.appContext = context;
+ // HMR root reload
+ {
+ context.reload = () => {
+ render(cloneVNode(vnode), rootContainer);
+ };
+ }
+ if (isHydrate && hydrate) {
+ hydrate(vnode, rootContainer);
+ }
+ else {
+ render(vnode, rootContainer);
+ }
+ isMounted = true;
+ app._container = rootContainer;
+ rootContainer.__vue_app__ = app;
+ {
+ devtoolsInitApp(app, version);
+ }
+ return vnode.component.proxy;
+ }
+ else {
+ warn(`App has already been mounted.\n` +
+ `If you want to remount the same app, move your app creation logic ` +
+ `into a factory function and create fresh app instances for each ` +
+ `mount - e.g. \`const createMyApp = () => createApp(App)\``);
+ }
+ },
+ unmount() {
+ if (isMounted) {
+ render(null, app._container);
+ {
+ devtoolsUnmountApp(app);
+ }
+ }
+ else {
+ warn(`Cannot unmount an app that is not mounted.`);
+ }
+ },
+ provide(key, value) {
+ if ( key in context.provides) {
+ warn(`App already provides property with key "${String(key)}". ` +
+ `It will be overwritten with the new value.`);
+ }
+ // TypeScript doesn't allow symbols as index type
+ // https://github.com/Microsoft/TypeScript/issues/24587
+ context.provides[key] = value;
+ return app;
+ }
+ });
+ return app;
+ };
+ }
+
+ let hasMismatch = false;
+ const isSVGContainer = (container) => /svg/.test(container.namespaceURI) && container.tagName !== 'foreignObject';
+ const isComment = (node) => node.nodeType === 8 /* COMMENT */;
+ // Note: hydration is DOM-specific
+ // But we have to place it in core due to tight coupling with core - splitting
+ // it out creates a ton of unnecessary complexity.
+ // Hydration also depends on some renderer internal logic which needs to be
+ // passed in via arguments.
+ function createHydrationFunctions(rendererInternals) {
+ const { mt: mountComponent, p: patch, o: { patchProp, nextSibling, parentNode, remove, insert, createComment } } = rendererInternals;
+ const hydrate = (vnode, container) => {
+ if ( !container.hasChildNodes()) {
+ warn(`Attempting to hydrate existing markup but container is empty. ` +
+ `Performing full mount instead.`);
+ patch(null, vnode, container);
+ return;
+ }
+ hasMismatch = false;
+ hydrateNode(container.firstChild, vnode, null, null);
+ flushPostFlushCbs();
+ if (hasMismatch && !false) {
+ // this error should show up in production
+ console.error(`Hydration completed but contains mismatches.`);
+ }
+ };
+ const hydrateNode = (node, vnode, parentComponent, parentSuspense, optimized = false) => {
+ const isFragmentStart = isComment(node) && node.data === '[';
+ const onMismatch = () => handleMismatch(node, vnode, parentComponent, parentSuspense, isFragmentStart);
+ const { type, ref, shapeFlag } = vnode;
+ const domType = node.nodeType;
+ vnode.el = node;
+ let nextNode = null;
+ switch (type) {
+ case Text:
+ if (domType !== 3 /* TEXT */) {
+ nextNode = onMismatch();
+ }
+ else {
+ if (node.data !== vnode.children) {
+ hasMismatch = true;
+
+ warn(`Hydration text mismatch:` +
+ `\n- Client: ${JSON.stringify(node.data)}` +
+ `\n- Server: ${JSON.stringify(vnode.children)}`);
+ node.data = vnode.children;
+ }
+ nextNode = nextSibling(node);
+ }
+ break;
+ case Comment:
+ if (domType !== 8 /* COMMENT */ || isFragmentStart) {
+ nextNode = onMismatch();
+ }
+ else {
+ nextNode = nextSibling(node);
+ }
+ break;
+ case Static:
+ if (domType !== 1 /* ELEMENT */) {
+ nextNode = onMismatch();
+ }
+ else {
+ // determine anchor, adopt content
+ nextNode = node;
+ // if the static vnode has its content stripped during build,
+ // adopt it from the server-rendered HTML.
+ const needToAdoptContent = !vnode.children.length;
+ for (let i = 0; i < vnode.staticCount; i++) {
+ if (needToAdoptContent)
+ vnode.children += nextNode.outerHTML;
+ if (i === vnode.staticCount - 1) {
+ vnode.anchor = nextNode;
+ }
+ nextNode = nextSibling(nextNode);
+ }
+ return nextNode;
+ }
+ break;
+ case Fragment:
+ if (!isFragmentStart) {
+ nextNode = onMismatch();
+ }
+ else {
+ nextNode = hydrateFragment(node, vnode, parentComponent, parentSuspense, optimized);
+ }
+ break;
+ default:
+ if (shapeFlag & 1 /* ELEMENT */) {
+ if (domType !== 1 /* ELEMENT */ ||
+ vnode.type !== node.tagName.toLowerCase()) {
+ nextNode = onMismatch();
+ }
+ else {
+ nextNode = hydrateElement(node, vnode, parentComponent, parentSuspense, optimized);
+ }
+ }
+ else if (shapeFlag & 6 /* COMPONENT */) {
+ // when setting up the render effect, if the initial vnode already
+ // has .el set, the component will perform hydration instead of mount
+ // on its sub-tree.
+ const container = parentNode(node);
+ const hydrateComponent = () => {
+ mountComponent(vnode, container, null, parentComponent, parentSuspense, isSVGContainer(container), optimized);
+ };
+ // async component
+ const loadAsync = vnode.type.__asyncLoader;
+ if (loadAsync) {
+ loadAsync().then(hydrateComponent);
+ }
+ else {
+ hydrateComponent();
+ }
+ // component may be async, so in the case of fragments we cannot rely
+ // on component's rendered output to determine the end of the fragment
+ // instead, we do a lookahead to find the end anchor node.
+ nextNode = isFragmentStart
+ ? locateClosingAsyncAnchor(node)
+ : nextSibling(node);
+ }
+ else if (shapeFlag & 64 /* TELEPORT */) {
+ if (domType !== 8 /* COMMENT */) {
+ nextNode = onMismatch();
+ }
+ else {
+ nextNode = vnode.type.hydrate(node, vnode, parentComponent, parentSuspense, optimized, rendererInternals, hydrateChildren);
+ }
+ }
+ else if ( shapeFlag & 128 /* SUSPENSE */) {
+ nextNode = vnode.type.hydrate(node, vnode, parentComponent, parentSuspense, isSVGContainer(parentNode(node)), optimized, rendererInternals, hydrateNode);
+ }
+ else {
+ warn('Invalid HostVNode type:', type, `(${typeof type})`);
+ }
+ }
+ if (ref != null) {
+ setRef(ref, null, parentSuspense, vnode);
+ }
+ return nextNode;
+ };
+ const hydrateElement = (el, vnode, parentComponent, parentSuspense, optimized) => {
+ optimized = optimized || !!vnode.dynamicChildren;
+ const { props, patchFlag, shapeFlag, dirs } = vnode;
+ // skip props & children if this is hoisted static nodes
+ if (patchFlag !== -1 /* HOISTED */) {
+ if (dirs) {
+ invokeDirectiveHook(vnode, null, parentComponent, 'created');
+ }
+ // props
+ if (props) {
+ if (!optimized ||
+ (patchFlag & 16 /* FULL_PROPS */ ||
+ patchFlag & 32 /* HYDRATE_EVENTS */)) {
+ for (const key in props) {
+ if (!isReservedProp(key) && isOn(key)) {
+ patchProp(el, key, null, props[key]);
+ }
+ }
+ }
+ else if (props.onClick) {
+ // Fast path for click listeners (which is most often) to avoid
+ // iterating through props.
+ patchProp(el, 'onClick', null, props.onClick);
+ }
+ }
+ // vnode / directive hooks
+ let vnodeHooks;
+ if ((vnodeHooks = props && props.onVnodeBeforeMount)) {
+ invokeVNodeHook(vnodeHooks, parentComponent, vnode);
+ }
+ if (dirs) {
+ invokeDirectiveHook(vnode, null, parentComponent, 'beforeMount');
+ }
+ if ((vnodeHooks = props && props.onVnodeMounted) || dirs) {
+ queueEffectWithSuspense(() => {
+ vnodeHooks && invokeVNodeHook(vnodeHooks, parentComponent, vnode);
+ dirs && invokeDirectiveHook(vnode, null, parentComponent, 'mounted');
+ }, parentSuspense);
+ }
+ // children
+ if (shapeFlag & 16 /* ARRAY_CHILDREN */ &&
+ // skip if element has innerHTML / textContent
+ !(props && (props.innerHTML || props.textContent))) {
+ let next = hydrateChildren(el.firstChild, vnode, el, parentComponent, parentSuspense, optimized);
+ let hasWarned = false;
+ while (next) {
+ hasMismatch = true;
+ if ( !hasWarned) {
+ warn(`Hydration children mismatch in <${vnode.type}>: ` +
+ `server rendered element contains more child nodes than client vdom.`);
+ hasWarned = true;
+ }
+ // The SSRed DOM contains more nodes than it should. Remove them.
+ const cur = next;
+ next = next.nextSibling;
+ remove(cur);
+ }
+ }
+ else if (shapeFlag & 8 /* TEXT_CHILDREN */) {
+ if (el.textContent !== vnode.children) {
+ hasMismatch = true;
+
+ warn(`Hydration text content mismatch in <${vnode.type}>:\n` +
+ `- Client: ${el.textContent}\n` +
+ `- Server: ${vnode.children}`);
+ el.textContent = vnode.children;
+ }
+ }
+ }
+ return el.nextSibling;
+ };
+ const hydrateChildren = (node, parentVNode, container, parentComponent, parentSuspense, optimized) => {
+ optimized = optimized || !!parentVNode.dynamicChildren;
+ const children = parentVNode.children;
+ const l = children.length;
+ let hasWarned = false;
+ for (let i = 0; i < l; i++) {
+ const vnode = optimized
+ ? children[i]
+ : (children[i] = normalizeVNode(children[i]));
+ if (node) {
+ node = hydrateNode(node, vnode, parentComponent, parentSuspense, optimized);
+ }
+ else {
+ hasMismatch = true;
+ if ( !hasWarned) {
+ warn(`Hydration children mismatch in <${container.tagName.toLowerCase()}>: ` +
+ `server rendered element contains fewer child nodes than client vdom.`);
+ hasWarned = true;
+ }
+ // the SSRed DOM didn't contain enough nodes. Mount the missing ones.
+ patch(null, vnode, container, null, parentComponent, parentSuspense, isSVGContainer(container));
+ }
+ }
+ return node;
+ };
+ const hydrateFragment = (node, vnode, parentComponent, parentSuspense, optimized) => {
+ const container = parentNode(node);
+ const next = hydrateChildren(nextSibling(node), vnode, container, parentComponent, parentSuspense, optimized);
+ if (next && isComment(next) && next.data === ']') {
+ return nextSibling((vnode.anchor = next));
+ }
+ else {
+ // fragment didn't hydrate successfully, since we didn't get a end anchor
+ // back. This should have led to node/children mismatch warnings.
+ hasMismatch = true;
+ // since the anchor is missing, we need to create one and insert it
+ insert((vnode.anchor = createComment(`]`)), container, next);
+ return next;
+ }
+ };
+ const handleMismatch = (node, vnode, parentComponent, parentSuspense, isFragment) => {
+ hasMismatch = true;
+
+ warn(`Hydration node mismatch:\n- Client vnode:`, vnode.type, `\n- Server rendered DOM:`, node, node.nodeType === 3 /* TEXT */
+ ? `(text)`
+ : isComment(node) && node.data === '['
+ ? `(start of fragment)`
+ : ``);
+ vnode.el = null;
+ if (isFragment) {
+ // remove excessive fragment nodes
+ const end = locateClosingAsyncAnchor(node);
+ while (true) {
+ const next = nextSibling(node);
+ if (next && next !== end) {
+ remove(next);
+ }
+ else {
+ break;
+ }
+ }
+ }
+ const next = nextSibling(node);
+ const container = parentNode(node);
+ remove(node);
+ patch(null, vnode, container, next, parentComponent, parentSuspense, isSVGContainer(container));
+ return next;
+ };
+ const locateClosingAsyncAnchor = (node) => {
+ let match = 0;
+ while (node) {
+ node = nextSibling(node);
+ if (node && isComment(node)) {
+ if (node.data === '[')
+ match++;
+ if (node.data === ']') {
+ if (match === 0) {
+ return nextSibling(node);
+ }
+ else {
+ match--;
+ }
+ }
+ }
+ }
+ return node;
+ };
+ return [hydrate, hydrateNode];
+ }
+
+ let supported;
+ let perf;
+ function startMeasure(instance, type) {
+ if (instance.appContext.config.performance && isSupported()) {
+ perf.mark(`vue-${type}-${instance.uid}`);
+ }
+ }
+ function endMeasure(instance, type) {
+ if (instance.appContext.config.performance && isSupported()) {
+ const startTag = `vue-${type}-${instance.uid}`;
+ const endTag = startTag + `:end`;
+ perf.mark(endTag);
+ perf.measure(`<${formatComponentName(instance, instance.type)}> ${type}`, startTag, endTag);
+ perf.clearMarks(startTag);
+ perf.clearMarks(endTag);
+ }
+ }
+ function isSupported() {
+ if (supported !== undefined) {
+ return supported;
+ }
+ /* eslint-disable no-restricted-globals */
+ if (typeof window !== 'undefined' && window.performance) {
+ supported = true;
+ perf = window.performance;
+ }
+ else {
+ supported = false;
+ }
+ /* eslint-enable no-restricted-globals */
+ return supported;
+ }
+
+ // implementation, close to no-op
+ function defineComponent(options) {
+ return isFunction(options) ? { setup: options, name: options.name } : options;
+ }
+
+ const isAsyncWrapper = (i) => !!i.type.__asyncLoader;
+ function defineAsyncComponent(source) {
+ if (isFunction(source)) {
+ source = { loader: source };
+ }
+ const { loader, loadingComponent: loadingComponent, errorComponent: errorComponent, delay = 200, timeout, // undefined = never times out
+ suspensible = true, onError: userOnError } = source;
+ let pendingRequest = null;
+ let resolvedComp;
+ let retries = 0;
+ const retry = () => {
+ retries++;
+ pendingRequest = null;
+ return load();
+ };
+ const load = () => {
+ let thisRequest;
+ return (pendingRequest ||
+ (thisRequest = pendingRequest = loader()
+ .catch(err => {
+ err = err instanceof Error ? err : new Error(String(err));
+ if (userOnError) {
+ return new Promise((resolve, reject) => {
+ const userRetry = () => resolve(retry());
+ const userFail = () => reject(err);
+ userOnError(err, userRetry, userFail, retries + 1);
+ });
+ }
+ else {
+ throw err;
+ }
+ })
+ .then((comp) => {
+ if (thisRequest !== pendingRequest && pendingRequest) {
+ return pendingRequest;
+ }
+ if ( !comp) {
+ warn(`Async component loader resolved to undefined. ` +
+ `If you are using retry(), make sure to return its return value.`);
+ }
+ // interop module default
+ if (comp &&
+ (comp.__esModule || comp[Symbol.toStringTag] === 'Module')) {
+ comp = comp.default;
+ }
+ if ( comp && !isObject(comp) && !isFunction(comp)) {
+ throw new Error(`Invalid async component load result: ${comp}`);
+ }
+ resolvedComp = comp;
+ return comp;
+ })));
+ };
+ return defineComponent({
+ __asyncLoader: load,
+ name: 'AsyncComponentWrapper',
+ setup() {
+ const instance = currentInstance;
+ // already resolved
+ if (resolvedComp) {
+ return () => createInnerComp(resolvedComp, instance);
+ }
+ const onError = (err) => {
+ pendingRequest = null;
+ handleError(err, instance, 13 /* ASYNC_COMPONENT_LOADER */, !errorComponent /* do not throw in dev if user provided error component */);
+ };
+ // suspense-controlled or SSR.
+ if (( suspensible && instance.suspense) ||
+ (false )) {
+ return load()
+ .then(comp => {
+ return () => createInnerComp(comp, instance);
+ })
+ .catch(err => {
+ onError(err);
+ return () => errorComponent
+ ? createVNode(errorComponent, {
+ error: err
+ })
+ : null;
+ });
+ }
+ const loaded = ref(false);
+ const error = ref();
+ const delayed = ref(!!delay);
+ if (delay) {
+ setTimeout(() => {
+ delayed.value = false;
+ }, delay);
+ }
+ if (timeout != null) {
+ setTimeout(() => {
+ if (!loaded.value && !error.value) {
+ const err = new Error(`Async component timed out after ${timeout}ms.`);
+ onError(err);
+ error.value = err;
+ }
+ }, timeout);
+ }
+ load()
+ .then(() => {
+ loaded.value = true;
+ })
+ .catch(err => {
+ onError(err);
+ error.value = err;
+ });
+ return () => {
+ if (loaded.value && resolvedComp) {
+ return createInnerComp(resolvedComp, instance);
+ }
+ else if (error.value && errorComponent) {
+ return createVNode(errorComponent, {
+ error: error.value
+ });
+ }
+ else if (loadingComponent && !delayed.value) {
+ return createVNode(loadingComponent);
+ }
+ };
+ }
+ });
+ }
+ function createInnerComp(comp, { vnode: { ref, props, children } }) {
+ const vnode = createVNode(comp, props, children);
+ // ensure inner component inherits the async wrapper's ref owner
+ vnode.ref = ref;
+ return vnode;
+ }
+
+ function createDevEffectOptions(instance) {
+ return {
+ scheduler: queueJob,
+ allowRecurse: true,
+ onTrack: instance.rtc ? e => invokeArrayFns(instance.rtc, e) : void 0,
+ onTrigger: instance.rtg ? e => invokeArrayFns(instance.rtg, e) : void 0
+ };
+ }
+ const queuePostRenderEffect = queueEffectWithSuspense
+ ;
+ const setRef = (rawRef, oldRawRef, parentSuspense, vnode) => {
+ if (isArray(rawRef)) {
+ rawRef.forEach((r, i) => setRef(r, oldRawRef && (isArray(oldRawRef) ? oldRawRef[i] : oldRawRef), parentSuspense, vnode));
+ return;
+ }
+ let value;
+ if (!vnode || isAsyncWrapper(vnode)) {
+ value = null;
+ }
+ else {
+ if (vnode.shapeFlag & 4 /* STATEFUL_COMPONENT */) {
+ value = vnode.component.exposed || vnode.component.proxy;
+ }
+ else {
+ value = vnode.el;
+ }
+ }
+ const { i: owner, r: ref } = rawRef;
+ if ( !owner) {
+ warn(`Missing ref owner context. ref cannot be used on hoisted vnodes. ` +
+ `A vnode with ref must be created inside the render function.`);
+ return;
+ }
+ const oldRef = oldRawRef && oldRawRef.r;
+ const refs = owner.refs === EMPTY_OBJ ? (owner.refs = {}) : owner.refs;
+ const setupState = owner.setupState;
+ // unset old ref
+ if (oldRef != null && oldRef !== ref) {
+ if (isString(oldRef)) {
+ refs[oldRef] = null;
+ if (hasOwn(setupState, oldRef)) {
+ setupState[oldRef] = null;
+ }
+ }
+ else if (isRef(oldRef)) {
+ oldRef.value = null;
+ }
+ }
+ if (isString(ref)) {
+ const doSet = () => {
+ refs[ref] = value;
+ if (hasOwn(setupState, ref)) {
+ setupState[ref] = value;
+ }
+ };
+ // #1789: for non-null values, set them after render
+ // null values means this is unmount and it should not overwrite another
+ // ref with the same key
+ if (value) {
+ doSet.id = -1;
+ queuePostRenderEffect(doSet, parentSuspense);
+ }
+ else {
+ doSet();
+ }
+ }
+ else if (isRef(ref)) {
+ const doSet = () => {
+ ref.value = value;
+ };
+ if (value) {
+ doSet.id = -1;
+ queuePostRenderEffect(doSet, parentSuspense);
+ }
+ else {
+ doSet();
+ }
+ }
+ else if (isFunction(ref)) {
+ callWithErrorHandling(ref, owner, 12 /* FUNCTION_REF */, [value, refs]);
+ }
+ else {
+ warn('Invalid template ref type:', value, `(${typeof value})`);
+ }
+ };
+ /**
+ * The createRenderer function accepts two generic arguments:
+ * HostNode and HostElement, corresponding to Node and Element types in the
+ * host environment. For example, for runtime-dom, HostNode would be the DOM
+ * `Node` interface and HostElement would be the DOM `Element` interface.
+ *
+ * Custom renderers can pass in the platform specific types like this:
+ *
+ * ``` js
+ * const { render, createApp } = createRenderer<Node, Element>({
+ * patchProp,
+ * ...nodeOps
+ * })
+ * ```
+ */
+ function createRenderer(options) {
+ return baseCreateRenderer(options);
+ }
+ // Separate API for creating hydration-enabled renderer.
+ // Hydration logic is only used when calling this function, making it
+ // tree-shakable.
+ function createHydrationRenderer(options) {
+ return baseCreateRenderer(options, createHydrationFunctions);
+ }
+ // implementation
+ function baseCreateRenderer(options, createHydrationFns) {
+ const { insert: hostInsert, remove: hostRemove, patchProp: hostPatchProp, forcePatchProp: hostForcePatchProp, createElement: hostCreateElement, createText: hostCreateText, createComment: hostCreateComment, setText: hostSetText, setElementText: hostSetElementText, parentNode: hostParentNode, nextSibling: hostNextSibling, setScopeId: hostSetScopeId = NOOP, cloneNode: hostCloneNode, insertStaticContent: hostInsertStaticContent } = options;
+ // Note: functions inside this closure should use `const xxx = () => {}`
+ // style in order to prevent being inlined by minifiers.
+ const patch = (n1, n2, container, anchor = null, parentComponent = null, parentSuspense = null, isSVG = false, optimized = false) => {
+ // patching & not same type, unmount old tree
+ if (n1 && !isSameVNodeType(n1, n2)) {
+ anchor = getNextHostNode(n1);
+ unmount(n1, parentComponent, parentSuspense, true);
+ n1 = null;
+ }
+ if (n2.patchFlag === -2 /* BAIL */) {
+ optimized = false;
+ n2.dynamicChildren = null;
+ }
+ const { type, ref, shapeFlag } = n2;
+ switch (type) {
+ case Text:
+ processText(n1, n2, container, anchor);
+ break;
+ case Comment:
+ processCommentNode(n1, n2, container, anchor);
+ break;
+ case Static:
+ if (n1 == null) {
+ mountStaticNode(n2, container, anchor, isSVG);
+ }
+ else {
+ patchStaticNode(n1, n2, container, isSVG);
+ }
+ break;
+ case Fragment:
+ processFragment(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
+ break;
+ default:
+ if (shapeFlag & 1 /* ELEMENT */) {
+ processElement(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ else if (shapeFlag & 6 /* COMPONENT */) {
+ processComponent(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ else if (shapeFlag & 64 /* TELEPORT */) {
+ type.process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, internals);
+ }
+ else if ( shapeFlag & 128 /* SUSPENSE */) {
+ type.process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, internals);
+ }
+ else {
+ warn('Invalid VNode type:', type, `(${typeof type})`);
+ }
+ }
+ // set ref
+ if (ref != null && parentComponent) {
+ setRef(ref, n1 && n1.ref, parentSuspense, n2);
+ }
+ };
+ const processText = (n1, n2, container, anchor) => {
+ if (n1 == null) {
+ hostInsert((n2.el = hostCreateText(n2.children)), container, anchor);
+ }
+ else {
+ const el = (n2.el = n1.el);
+ if (n2.children !== n1.children) {
+ hostSetText(el, n2.children);
+ }
+ }
+ };
+ const processCommentNode = (n1, n2, container, anchor) => {
+ if (n1 == null) {
+ hostInsert((n2.el = hostCreateComment(n2.children || '')), container, anchor);
+ }
+ else {
+ // there's no support for dynamic comments
+ n2.el = n1.el;
+ }
+ };
+ const mountStaticNode = (n2, container, anchor, isSVG) => {
+ [n2.el, n2.anchor] = hostInsertStaticContent(n2.children, container, anchor, isSVG);
+ };
+ /**
+ * Dev / HMR only
+ */
+ const patchStaticNode = (n1, n2, container, isSVG) => {
+ // static nodes are only patched during dev for HMR
+ if (n2.children !== n1.children) {
+ const anchor = hostNextSibling(n1.anchor);
+ // remove existing
+ removeStaticNode(n1);
+ [n2.el, n2.anchor] = hostInsertStaticContent(n2.children, container, anchor, isSVG);
+ }
+ else {
+ n2.el = n1.el;
+ n2.anchor = n1.anchor;
+ }
+ };
+ const moveStaticNode = ({ el, anchor }, container, nextSibling) => {
+ let next;
+ while (el && el !== anchor) {
+ next = hostNextSibling(el);
+ hostInsert(el, container, nextSibling);
+ el = next;
+ }
+ hostInsert(anchor, container, nextSibling);
+ };
+ const removeStaticNode = ({ el, anchor }) => {
+ let next;
+ while (el && el !== anchor) {
+ next = hostNextSibling(el);
+ hostRemove(el);
+ el = next;
+ }
+ hostRemove(anchor);
+ };
+ const processElement = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) => {
+ isSVG = isSVG || n2.type === 'svg';
+ if (n1 == null) {
+ mountElement(n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ else {
+ patchElement(n1, n2, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ };
+ const mountElement = (vnode, container, anchor, parentComponent, parentSuspense, isSVG, optimized) => {
+ let el;
+ let vnodeHook;
+ const { type, props, shapeFlag, transition, scopeId, patchFlag, dirs } = vnode;
+ {
+ el = vnode.el = hostCreateElement(vnode.type, isSVG, props && props.is);
+ // mount children first, since some props may rely on child content
+ // being already rendered, e.g. `<select value>`
+ if (shapeFlag & 8 /* TEXT_CHILDREN */) {
+ hostSetElementText(el, vnode.children);
+ }
+ else if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
+ mountChildren(vnode.children, el, null, parentComponent, parentSuspense, isSVG && type !== 'foreignObject', optimized || !!vnode.dynamicChildren);
+ }
+ if (dirs) {
+ invokeDirectiveHook(vnode, null, parentComponent, 'created');
+ }
+ // props
+ if (props) {
+ for (const key in props) {
+ if (!isReservedProp(key)) {
+ hostPatchProp(el, key, null, props[key], isSVG, vnode.children, parentComponent, parentSuspense, unmountChildren);
+ }
+ }
+ if ((vnodeHook = props.onVnodeBeforeMount)) {
+ invokeVNodeHook(vnodeHook, parentComponent, vnode);
+ }
+ }
+ // scopeId
+ setScopeId(el, scopeId, vnode, parentComponent);
+ }
+ {
+ Object.defineProperty(el, '__vnode', {
+ value: vnode,
+ enumerable: false
+ });
+ Object.defineProperty(el, '__vueParentComponent', {
+ value: parentComponent,
+ enumerable: false
+ });
+ }
+ if (dirs) {
+ invokeDirectiveHook(vnode, null, parentComponent, 'beforeMount');
+ }
+ // #1583 For inside suspense + suspense not resolved case, enter hook should call when suspense resolved
+ // #1689 For inside suspense + suspense resolved case, just call it
+ const needCallTransitionHooks = (!parentSuspense || (parentSuspense && !parentSuspense.pendingBranch)) &&
+ transition &&
+ !transition.persisted;
+ if (needCallTransitionHooks) {
+ transition.beforeEnter(el);
+ }
+ hostInsert(el, container, anchor);
+ if ((vnodeHook = props && props.onVnodeMounted) ||
+ needCallTransitionHooks ||
+ dirs) {
+ queuePostRenderEffect(() => {
+ vnodeHook && invokeVNodeHook(vnodeHook, parentComponent, vnode);
+ needCallTransitionHooks && transition.enter(el);
+ dirs && invokeDirectiveHook(vnode, null, parentComponent, 'mounted');
+ }, parentSuspense);
+ }
+ };
+ const setScopeId = (el, scopeId, vnode, parentComponent) => {
+ if (scopeId) {
+ hostSetScopeId(el, scopeId);
+ }
+ if (parentComponent) {
+ const treeOwnerId = parentComponent.type.__scopeId;
+ // vnode's own scopeId and the current patched component's scopeId is
+ // different - this is a slot content node.
+ if (treeOwnerId && treeOwnerId !== scopeId) {
+ hostSetScopeId(el, treeOwnerId + '-s');
+ }
+ let subTree = parentComponent.subTree;
+ if ( subTree.type === Fragment) {
+ subTree =
+ filterSingleRoot(subTree.children) || subTree;
+ }
+ if (vnode === subTree) {
+ setScopeId(el, parentComponent.vnode.scopeId, parentComponent.vnode, parentComponent.parent);
+ }
+ }
+ };
+ const mountChildren = (children, container, anchor, parentComponent, parentSuspense, isSVG, optimized, start = 0) => {
+ for (let i = start; i < children.length; i++) {
+ const child = (children[i] = optimized
+ ? cloneIfMounted(children[i])
+ : normalizeVNode(children[i]));
+ patch(null, child, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ };
+ const patchElement = (n1, n2, parentComponent, parentSuspense, isSVG, optimized) => {
+ const el = (n2.el = n1.el);
+ let { patchFlag, dynamicChildren, dirs } = n2;
+ // #1426 take the old vnode's patch flag into account since user may clone a
+ // compiler-generated vnode, which de-opts to FULL_PROPS
+ patchFlag |= n1.patchFlag & 16 /* FULL_PROPS */;
+ const oldProps = n1.props || EMPTY_OBJ;
+ const newProps = n2.props || EMPTY_OBJ;
+ let vnodeHook;
+ if ((vnodeHook = newProps.onVnodeBeforeUpdate)) {
+ invokeVNodeHook(vnodeHook, parentComponent, n2, n1);
+ }
+ if (dirs) {
+ invokeDirectiveHook(n2, n1, parentComponent, 'beforeUpdate');
+ }
+ if ( isHmrUpdating) {
+ // HMR updated, force full diff
+ patchFlag = 0;
+ optimized = false;
+ dynamicChildren = null;
+ }
+ if (patchFlag > 0) {
+ // the presence of a patchFlag means this element's render code was
+ // generated by the compiler and can take the fast path.
+ // in this path old node and new node are guaranteed to have the same shape
+ // (i.e. at the exact same position in the source template)
+ if (patchFlag & 16 /* FULL_PROPS */) {
+ // element props contain dynamic keys, full diff needed
+ patchProps(el, n2, oldProps, newProps, parentComponent, parentSuspense, isSVG);
+ }
+ else {
+ // class
+ // this flag is matched when the element has dynamic class bindings.
+ if (patchFlag & 2 /* CLASS */) {
+ if (oldProps.class !== newProps.class) {
+ hostPatchProp(el, 'class', null, newProps.class, isSVG);
+ }
+ }
+ // style
+ // this flag is matched when the element has dynamic style bindings
+ if (patchFlag & 4 /* STYLE */) {
+ hostPatchProp(el, 'style', oldProps.style, newProps.style, isSVG);
+ }
+ // props
+ // This flag is matched when the element has dynamic prop/attr bindings
+ // other than class and style. The keys of dynamic prop/attrs are saved for
+ // faster iteration.
+ // Note dynamic keys like :[foo]="bar" will cause this optimization to
+ // bail out and go through a full diff because we need to unset the old key
+ if (patchFlag & 8 /* PROPS */) {
+ // if the flag is present then dynamicProps must be non-null
+ const propsToUpdate = n2.dynamicProps;
+ for (let i = 0; i < propsToUpdate.length; i++) {
+ const key = propsToUpdate[i];
+ const prev = oldProps[key];
+ const next = newProps[key];
+ if (next !== prev ||
+ (hostForcePatchProp && hostForcePatchProp(el, key))) {
+ hostPatchProp(el, key, prev, next, isSVG, n1.children, parentComponent, parentSuspense, unmountChildren);
+ }
+ }
+ }
+ }
+ // text
+ // This flag is matched when the element has only dynamic text children.
+ if (patchFlag & 1 /* TEXT */) {
+ if (n1.children !== n2.children) {
+ hostSetElementText(el, n2.children);
+ }
+ }
+ }
+ else if (!optimized && dynamicChildren == null) {
+ // unoptimized, full diff
+ patchProps(el, n2, oldProps, newProps, parentComponent, parentSuspense, isSVG);
+ }
+ const areChildrenSVG = isSVG && n2.type !== 'foreignObject';
+ if (dynamicChildren) {
+ patchBlockChildren(n1.dynamicChildren, dynamicChildren, el, parentComponent, parentSuspense, areChildrenSVG);
+ if ( parentComponent && parentComponent.type.__hmrId) {
+ traverseStaticChildren(n1, n2);
+ }
+ }
+ else if (!optimized) {
+ // full diff
+ patchChildren(n1, n2, el, null, parentComponent, parentSuspense, areChildrenSVG);
+ }
+ if ((vnodeHook = newProps.onVnodeUpdated) || dirs) {
+ queuePostRenderEffect(() => {
+ vnodeHook && invokeVNodeHook(vnodeHook, parentComponent, n2, n1);
+ dirs && invokeDirectiveHook(n2, n1, parentComponent, 'updated');
+ }, parentSuspense);
+ }
+ };
+ // The fast path for blocks.
+ const patchBlockChildren = (oldChildren, newChildren, fallbackContainer, parentComponent, parentSuspense, isSVG) => {
+ for (let i = 0; i < newChildren.length; i++) {
+ const oldVNode = oldChildren[i];
+ const newVNode = newChildren[i];
+ // Determine the container (parent element) for the patch.
+ const container =
+ // - In the case of a Fragment, we need to provide the actual parent
+ // of the Fragment itself so it can move its children.
+ oldVNode.type === Fragment ||
+ // - In the case of different nodes, there is going to be a replacement
+ // which also requires the correct parent container
+ !isSameVNodeType(oldVNode, newVNode) ||
+ // - In the case of a component, it could contain anything.
+ oldVNode.shapeFlag & 6 /* COMPONENT */ ||
+ oldVNode.shapeFlag & 64 /* TELEPORT */
+ ? hostParentNode(oldVNode.el)
+ : // In other cases, the parent container is not actually used so we
+ // just pass the block element here to avoid a DOM parentNode call.
+ fallbackContainer;
+ patch(oldVNode, newVNode, container, null, parentComponent, parentSuspense, isSVG, true);
+ }
+ };
+ const patchProps = (el, vnode, oldProps, newProps, parentComponent, parentSuspense, isSVG) => {
+ if (oldProps !== newProps) {
+ for (const key in newProps) {
+ // empty string is not valid prop
+ if (isReservedProp(key))
+ continue;
+ const next = newProps[key];
+ const prev = oldProps[key];
+ if (next !== prev ||
+ (hostForcePatchProp && hostForcePatchProp(el, key))) {
+ hostPatchProp(el, key, prev, next, isSVG, vnode.children, parentComponent, parentSuspense, unmountChildren);
+ }
+ }
+ if (oldProps !== EMPTY_OBJ) {
+ for (const key in oldProps) {
+ if (!isReservedProp(key) && !(key in newProps)) {
+ hostPatchProp(el, key, oldProps[key], null, isSVG, vnode.children, parentComponent, parentSuspense, unmountChildren);
+ }
+ }
+ }
+ }
+ };
+ const processFragment = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) => {
+ const fragmentStartAnchor = (n2.el = n1 ? n1.el : hostCreateText(''));
+ const fragmentEndAnchor = (n2.anchor = n1 ? n1.anchor : hostCreateText(''));
+ let { patchFlag, dynamicChildren } = n2;
+ if (patchFlag > 0) {
+ optimized = true;
+ }
+ if ( isHmrUpdating) {
+ // HMR updated, force full diff
+ patchFlag = 0;
+ optimized = false;
+ dynamicChildren = null;
+ }
+ if (n1 == null) {
+ hostInsert(fragmentStartAnchor, container, anchor);
+ hostInsert(fragmentEndAnchor, container, anchor);
+ // a fragment can only have array children
+ // since they are either generated by the compiler, or implicitly created
+ // from arrays.
+ mountChildren(n2.children, container, fragmentEndAnchor, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ else {
+ if (patchFlag > 0 &&
+ patchFlag & 64 /* STABLE_FRAGMENT */ &&
+ dynamicChildren &&
+ // #2715 the previous fragment could've been a BAILed one as a result
+ // of renderSlot() with no valid children
+ n1.dynamicChildren) {
+ // a stable fragment (template root or <template v-for>) doesn't need to
+ // patch children order, but it may contain dynamicChildren.
+ patchBlockChildren(n1.dynamicChildren, dynamicChildren, container, parentComponent, parentSuspense, isSVG);
+ if ( parentComponent && parentComponent.type.__hmrId) {
+ traverseStaticChildren(n1, n2);
+ }
+ else if (
+ // #2080 if the stable fragment has a key, it's a <template v-for> that may
+ // get moved around. Make sure all root level vnodes inherit el.
+ // #2134 or if it's a component root, it may also get moved around
+ // as the component is being moved.
+ n2.key != null ||
+ (parentComponent && n2 === parentComponent.subTree)) {
+ traverseStaticChildren(n1, n2, true /* shallow */);
+ }
+ }
+ else {
+ // keyed / unkeyed, or manual fragments.
+ // for keyed & unkeyed, since they are compiler generated from v-for,
+ // each child is guaranteed to be a block so the fragment will never
+ // have dynamicChildren.
+ patchChildren(n1, n2, container, fragmentEndAnchor, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ }
+ };
+ const processComponent = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) => {
+ if (n1 == null) {
+ if (n2.shapeFlag & 512 /* COMPONENT_KEPT_ALIVE */) {
+ parentComponent.ctx.activate(n2, container, anchor, isSVG, optimized);
+ }
+ else {
+ mountComponent(n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ }
+ else {
+ updateComponent(n1, n2, optimized);
+ }
+ };
+ const mountComponent = (initialVNode, container, anchor, parentComponent, parentSuspense, isSVG, optimized) => {
+ const instance = (initialVNode.component = createComponentInstance(initialVNode, parentComponent, parentSuspense));
+ if ( instance.type.__hmrId) {
+ registerHMR(instance);
+ }
+ {
+ pushWarningContext(initialVNode);
+ startMeasure(instance, `mount`);
+ }
+ // inject renderer internals for keepAlive
+ if (isKeepAlive(initialVNode)) {
+ instance.ctx.renderer = internals;
+ }
+ // resolve props and slots for setup context
+ {
+ startMeasure(instance, `init`);
+ }
+ setupComponent(instance);
+ {
+ endMeasure(instance, `init`);
+ }
+ // setup() is async. This component relies on async logic to be resolved
+ // before proceeding
+ if ( instance.asyncDep) {
+ parentSuspense && parentSuspense.registerDep(instance, setupRenderEffect);
+ // Give it a placeholder if this is not hydration
+ // TODO handle self-defined fallback
+ if (!initialVNode.el) {
+ const placeholder = (instance.subTree = createVNode(Comment));
+ processCommentNode(null, placeholder, container, anchor);
+ }
+ return;
+ }
+ setupRenderEffect(instance, initialVNode, container, anchor, parentSuspense, isSVG, optimized);
+ {
+ popWarningContext();
+ endMeasure(instance, `mount`);
+ }
+ };
+ const updateComponent = (n1, n2, optimized) => {
+ const instance = (n2.component = n1.component);
+ if (shouldUpdateComponent(n1, n2, optimized)) {
+ if (
+ instance.asyncDep &&
+ !instance.asyncResolved) {
+ // async & still pending - just update props and slots
+ // since the component's reactive effect for render isn't set-up yet
+ {
+ pushWarningContext(n2);
+ }
+ updateComponentPreRender(instance, n2, optimized);
+ {
+ popWarningContext();
+ }
+ return;
+ }
+ else {
+ // normal update
+ instance.next = n2;
+ // in case the child component is also queued, remove it to avoid
+ // double updating the same child component in the same flush.
+ invalidateJob(instance.update);
+ // instance.update is the reactive effect runner.
+ instance.update();
+ }
+ }
+ else {
+ // no update needed. just copy over properties
+ n2.component = n1.component;
+ n2.el = n1.el;
+ instance.vnode = n2;
+ }
+ };
+ const setupRenderEffect = (instance, initialVNode, container, anchor, parentSuspense, isSVG, optimized) => {
+ // create reactive effect for rendering
+ instance.update = effect(function componentEffect() {
+ if (!instance.isMounted) {
+ let vnodeHook;
+ const { el, props } = initialVNode;
+ const { bm, m, parent } = instance;
+ // beforeMount hook
+ if (bm) {
+ invokeArrayFns(bm);
+ }
+ // onVnodeBeforeMount
+ if ((vnodeHook = props && props.onVnodeBeforeMount)) {
+ invokeVNodeHook(vnodeHook, parent, initialVNode);
+ }
+ // render
+ {
+ startMeasure(instance, `render`);
+ }
+ const subTree = (instance.subTree = renderComponentRoot(instance));
+ {
+ endMeasure(instance, `render`);
+ }
+ if (el && hydrateNode) {
+ {
+ startMeasure(instance, `hydrate`);
+ }
+ // vnode has adopted host node - perform hydration instead of mount.
+ hydrateNode(initialVNode.el, subTree, instance, parentSuspense);
+ {
+ endMeasure(instance, `hydrate`);
+ }
+ }
+ else {
+ {
+ startMeasure(instance, `patch`);
+ }
+ patch(null, subTree, container, anchor, instance, parentSuspense, isSVG);
+ {
+ endMeasure(instance, `patch`);
+ }
+ initialVNode.el = subTree.el;
+ }
+ // mounted hook
+ if (m) {
+ queuePostRenderEffect(m, parentSuspense);
+ }
+ // onVnodeMounted
+ if ((vnodeHook = props && props.onVnodeMounted)) {
+ const scopedInitialVNode = initialVNode;
+ queuePostRenderEffect(() => {
+ invokeVNodeHook(vnodeHook, parent, scopedInitialVNode);
+ }, parentSuspense);
+ }
+ // activated hook for keep-alive roots.
+ // #1742 activated hook must be accessed after first render
+ // since the hook may be injected by a child keep-alive
+ const { a } = instance;
+ if (a &&
+ initialVNode.shapeFlag & 256 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
+ queuePostRenderEffect(a, parentSuspense);
+ }
+ instance.isMounted = true;
+ // #2458: deference mount-only object parameters to prevent memleaks
+ initialVNode = container = anchor = null;
+ }
+ else {
+ // updateComponent
+ // This is triggered by mutation of component's own state (next: null)
+ // OR parent calling processComponent (next: VNode)
+ let { next, bu, u, parent, vnode } = instance;
+ let originNext = next;
+ let vnodeHook;
+ {
+ pushWarningContext(next || instance.vnode);
+ }
+ if (next) {
+ next.el = vnode.el;
+ updateComponentPreRender(instance, next, optimized);
+ }
+ else {
+ next = vnode;
+ }
+ // beforeUpdate hook
+ if (bu) {
+ invokeArrayFns(bu);
+ }
+ // onVnodeBeforeUpdate
+ if ((vnodeHook = next.props && next.props.onVnodeBeforeUpdate)) {
+ invokeVNodeHook(vnodeHook, parent, next, vnode);
+ }
+ // render
+ {
+ startMeasure(instance, `render`);
+ }
+ const nextTree = renderComponentRoot(instance);
+ {
+ endMeasure(instance, `render`);
+ }
+ const prevTree = instance.subTree;
+ instance.subTree = nextTree;
+ {
+ startMeasure(instance, `patch`);
+ }
+ patch(prevTree, nextTree,
+ // parent may have changed if it's in a teleport
+ hostParentNode(prevTree.el),
+ // anchor may have changed if it's in a fragment
+ getNextHostNode(prevTree), instance, parentSuspense, isSVG);
+ {
+ endMeasure(instance, `patch`);
+ }
+ next.el = nextTree.el;
+ if (originNext === null) {
+ // self-triggered update. In case of HOC, update parent component
+ // vnode el. HOC is indicated by parent instance's subTree pointing
+ // to child component's vnode
+ updateHOCHostEl(instance, nextTree.el);
+ }
+ // updated hook
+ if (u) {
+ queuePostRenderEffect(u, parentSuspense);
+ }
+ // onVnodeUpdated
+ if ((vnodeHook = next.props && next.props.onVnodeUpdated)) {
+ queuePostRenderEffect(() => {
+ invokeVNodeHook(vnodeHook, parent, next, vnode);
+ }, parentSuspense);
+ }
+ {
+ devtoolsComponentUpdated(instance);
+ }
+ {
+ popWarningContext();
+ }
+ }
+ }, createDevEffectOptions(instance) );
+ };
+ const updateComponentPreRender = (instance, nextVNode, optimized) => {
+ nextVNode.component = instance;
+ const prevProps = instance.vnode.props;
+ instance.vnode = nextVNode;
+ instance.next = null;
+ updateProps(instance, nextVNode.props, prevProps, optimized);
+ updateSlots(instance, nextVNode.children);
+ // props update may have triggered pre-flush watchers.
+ // flush them before the render update.
+ flushPreFlushCbs(undefined, instance.update);
+ };
+ const patchChildren = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized = false) => {
+ const c1 = n1 && n1.children;
+ const prevShapeFlag = n1 ? n1.shapeFlag : 0;
+ const c2 = n2.children;
+ const { patchFlag, shapeFlag } = n2;
+ // fast path
+ if (patchFlag > 0) {
+ if (patchFlag & 128 /* KEYED_FRAGMENT */) {
+ // this could be either fully-keyed or mixed (some keyed some not)
+ // presence of patchFlag means children are guaranteed to be arrays
+ patchKeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
+ return;
+ }
+ else if (patchFlag & 256 /* UNKEYED_FRAGMENT */) {
+ // unkeyed
+ patchUnkeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
+ return;
+ }
+ }
+ // children has 3 possibilities: text, array or no children.
+ if (shapeFlag & 8 /* TEXT_CHILDREN */) {
+ // text children fast path
+ if (prevShapeFlag & 16 /* ARRAY_CHILDREN */) {
+ unmountChildren(c1, parentComponent, parentSuspense);
+ }
+ if (c2 !== c1) {
+ hostSetElementText(container, c2);
+ }
+ }
+ else {
+ if (prevShapeFlag & 16 /* ARRAY_CHILDREN */) {
+ // prev children was array
+ if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
+ // two arrays, cannot assume anything, do full diff
+ patchKeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ else {
+ // no new children, just unmount old
+ unmountChildren(c1, parentComponent, parentSuspense, true);
+ }
+ }
+ else {
+ // prev children was text OR null
+ // new children is array OR null
+ if (prevShapeFlag & 8 /* TEXT_CHILDREN */) {
+ hostSetElementText(container, '');
+ }
+ // mount new if array
+ if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
+ mountChildren(c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ }
+ }
+ };
+ const patchUnkeyedChildren = (c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) => {
+ c1 = c1 || EMPTY_ARR;
+ c2 = c2 || EMPTY_ARR;
+ const oldLength = c1.length;
+ const newLength = c2.length;
+ const commonLength = Math.min(oldLength, newLength);
+ let i;
+ for (i = 0; i < commonLength; i++) {
+ const nextChild = (c2[i] = optimized
+ ? cloneIfMounted(c2[i])
+ : normalizeVNode(c2[i]));
+ patch(c1[i], nextChild, container, null, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ if (oldLength > newLength) {
+ // remove old
+ unmountChildren(c1, parentComponent, parentSuspense, true, false, commonLength);
+ }
+ else {
+ // mount new
+ mountChildren(c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, commonLength);
+ }
+ };
+ // can be all-keyed or mixed
+ const patchKeyedChildren = (c1, c2, container, parentAnchor, parentComponent, parentSuspense, isSVG, optimized) => {
+ let i = 0;
+ const l2 = c2.length;
+ let e1 = c1.length - 1; // prev ending index
+ let e2 = l2 - 1; // next ending index
+ // 1. sync from start
+ // (a b) c
+ // (a b) d e
+ while (i <= e1 && i <= e2) {
+ const n1 = c1[i];
+ const n2 = (c2[i] = optimized
+ ? cloneIfMounted(c2[i])
+ : normalizeVNode(c2[i]));
+ if (isSameVNodeType(n1, n2)) {
+ patch(n1, n2, container, null, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ else {
+ break;
+ }
+ i++;
+ }
+ // 2. sync from end
+ // a (b c)
+ // d e (b c)
+ while (i <= e1 && i <= e2) {
+ const n1 = c1[e1];
+ const n2 = (c2[e2] = optimized
+ ? cloneIfMounted(c2[e2])
+ : normalizeVNode(c2[e2]));
+ if (isSameVNodeType(n1, n2)) {
+ patch(n1, n2, container, null, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ else {
+ break;
+ }
+ e1--;
+ e2--;
+ }
+ // 3. common sequence + mount
+ // (a b)
+ // (a b) c
+ // i = 2, e1 = 1, e2 = 2
+ // (a b)
+ // c (a b)
+ // i = 0, e1 = -1, e2 = 0
+ if (i > e1) {
+ if (i <= e2) {
+ const nextPos = e2 + 1;
+ const anchor = nextPos < l2 ? c2[nextPos].el : parentAnchor;
+ while (i <= e2) {
+ patch(null, (c2[i] = optimized
+ ? cloneIfMounted(c2[i])
+ : normalizeVNode(c2[i])), container, anchor, parentComponent, parentSuspense, isSVG);
+ i++;
+ }
+ }
+ }
+ // 4. common sequence + unmount
+ // (a b) c
+ // (a b)
+ // i = 2, e1 = 2, e2 = 1
+ // a (b c)
+ // (b c)
+ // i = 0, e1 = 0, e2 = -1
+ else if (i > e2) {
+ while (i <= e1) {
+ unmount(c1[i], parentComponent, parentSuspense, true);
+ i++;
+ }
+ }
+ // 5. unknown sequence
+ // [i ... e1 + 1]: a b [c d e] f g
+ // [i ... e2 + 1]: a b [e d c h] f g
+ // i = 2, e1 = 4, e2 = 5
+ else {
+ const s1 = i; // prev starting index
+ const s2 = i; // next starting index
+ // 5.1 build key:index map for newChildren
+ const keyToNewIndexMap = new Map();
+ for (i = s2; i <= e2; i++) {
+ const nextChild = (c2[i] = optimized
+ ? cloneIfMounted(c2[i])
+ : normalizeVNode(c2[i]));
+ if (nextChild.key != null) {
+ if ( keyToNewIndexMap.has(nextChild.key)) {
+ warn(`Duplicate keys found during update:`, JSON.stringify(nextChild.key), `Make sure keys are unique.`);
+ }
+ keyToNewIndexMap.set(nextChild.key, i);
+ }
+ }
+ // 5.2 loop through old children left to be patched and try to patch
+ // matching nodes & remove nodes that are no longer present
+ let j;
+ let patched = 0;
+ const toBePatched = e2 - s2 + 1;
+ let moved = false;
+ // used to track whether any node has moved
+ let maxNewIndexSoFar = 0;
+ // works as Map<newIndex, oldIndex>
+ // Note that oldIndex is offset by +1
+ // and oldIndex = 0 is a special value indicating the new node has
+ // no corresponding old node.
+ // used for determining longest stable subsequence
+ const newIndexToOldIndexMap = new Array(toBePatched);
+ for (i = 0; i < toBePatched; i++)
+ newIndexToOldIndexMap[i] = 0;
+ for (i = s1; i <= e1; i++) {
+ const prevChild = c1[i];
+ if (patched >= toBePatched) {
+ // all new children have been patched so this can only be a removal
+ unmount(prevChild, parentComponent, parentSuspense, true);
+ continue;
+ }
+ let newIndex;
+ if (prevChild.key != null) {
+ newIndex = keyToNewIndexMap.get(prevChild.key);
+ }
+ else {
+ // key-less node, try to locate a key-less node of the same type
+ for (j = s2; j <= e2; j++) {
+ if (newIndexToOldIndexMap[j - s2] === 0 &&
+ isSameVNodeType(prevChild, c2[j])) {
+ newIndex = j;
+ break;
+ }
+ }
+ }
+ if (newIndex === undefined) {
+ unmount(prevChild, parentComponent, parentSuspense, true);
+ }
+ else {
+ newIndexToOldIndexMap[newIndex - s2] = i + 1;
+ if (newIndex >= maxNewIndexSoFar) {
+ maxNewIndexSoFar = newIndex;
+ }
+ else {
+ moved = true;
+ }
+ patch(prevChild, c2[newIndex], container, null, parentComponent, parentSuspense, isSVG, optimized);
+ patched++;
+ }
+ }
+ // 5.3 move and mount
+ // generate longest stable subsequence only when nodes have moved
+ const increasingNewIndexSequence = moved
+ ? getSequence(newIndexToOldIndexMap)
+ : EMPTY_ARR;
+ j = increasingNewIndexSequence.length - 1;
+ // looping backwards so that we can use last patched node as anchor
+ for (i = toBePatched - 1; i >= 0; i--) {
+ const nextIndex = s2 + i;
+ const nextChild = c2[nextIndex];
+ const anchor = nextIndex + 1 < l2 ? c2[nextIndex + 1].el : parentAnchor;
+ if (newIndexToOldIndexMap[i] === 0) {
+ // mount new
+ patch(null, nextChild, container, anchor, parentComponent, parentSuspense, isSVG);
+ }
+ else if (moved) {
+ // move if:
+ // There is no stable subsequence (e.g. a reverse)
+ // OR current node is not among the stable sequence
+ if (j < 0 || i !== increasingNewIndexSequence[j]) {
+ move(nextChild, container, anchor, 2 /* REORDER */);
+ }
+ else {
+ j--;
+ }
+ }
+ }
+ }
+ };
+ const move = (vnode, container, anchor, moveType, parentSuspense = null) => {
+ const { el, type, transition, children, shapeFlag } = vnode;
+ if (shapeFlag & 6 /* COMPONENT */) {
+ move(vnode.component.subTree, container, anchor, moveType);
+ return;
+ }
+ if ( shapeFlag & 128 /* SUSPENSE */) {
+ vnode.suspense.move(container, anchor, moveType);
+ return;
+ }
+ if (shapeFlag & 64 /* TELEPORT */) {
+ type.move(vnode, container, anchor, internals);
+ return;
+ }
+ if (type === Fragment) {
+ hostInsert(el, container, anchor);
+ for (let i = 0; i < children.length; i++) {
+ move(children[i], container, anchor, moveType);
+ }
+ hostInsert(vnode.anchor, container, anchor);
+ return;
+ }
+ if (type === Static) {
+ moveStaticNode(vnode, container, anchor);
+ return;
+ }
+ // single nodes
+ const needTransition = moveType !== 2 /* REORDER */ &&
+ shapeFlag & 1 /* ELEMENT */ &&
+ transition;
+ if (needTransition) {
+ if (moveType === 0 /* ENTER */) {
+ transition.beforeEnter(el);
+ hostInsert(el, container, anchor);
+ queuePostRenderEffect(() => transition.enter(el), parentSuspense);
+ }
+ else {
+ const { leave, delayLeave, afterLeave } = transition;
+ const remove = () => hostInsert(el, container, anchor);
+ const performLeave = () => {
+ leave(el, () => {
+ remove();
+ afterLeave && afterLeave();
+ });
+ };
+ if (delayLeave) {
+ delayLeave(el, remove, performLeave);
+ }
+ else {
+ performLeave();
+ }
+ }
+ }
+ else {
+ hostInsert(el, container, anchor);
+ }
+ };
+ const unmount = (vnode, parentComponent, parentSuspense, doRemove = false, optimized = false) => {
+ const { type, props, ref, children, dynamicChildren, shapeFlag, patchFlag, dirs } = vnode;
+ // unset ref
+ if (ref != null) {
+ setRef(ref, null, parentSuspense, null);
+ }
+ if (shapeFlag & 256 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
+ parentComponent.ctx.deactivate(vnode);
+ return;
+ }
+ const shouldInvokeDirs = shapeFlag & 1 /* ELEMENT */ && dirs;
+ let vnodeHook;
+ if ((vnodeHook = props && props.onVnodeBeforeUnmount)) {
+ invokeVNodeHook(vnodeHook, parentComponent, vnode);
+ }
+ if (shapeFlag & 6 /* COMPONENT */) {
+ unmountComponent(vnode.component, parentSuspense, doRemove);
+ }
+ else {
+ if ( shapeFlag & 128 /* SUSPENSE */) {
+ vnode.suspense.unmount(parentSuspense, doRemove);
+ return;
+ }
+ if (shouldInvokeDirs) {
+ invokeDirectiveHook(vnode, null, parentComponent, 'beforeUnmount');
+ }
+ if (dynamicChildren &&
+ // #1153: fast path should not be taken for non-stable (v-for) fragments
+ (type !== Fragment ||
+ (patchFlag > 0 && patchFlag & 64 /* STABLE_FRAGMENT */))) {
+ // fast path for block nodes: only need to unmount dynamic children.
+ unmountChildren(dynamicChildren, parentComponent, parentSuspense, false, true);
+ }
+ else if ((type === Fragment &&
+ (patchFlag & 128 /* KEYED_FRAGMENT */ ||
+ patchFlag & 256 /* UNKEYED_FRAGMENT */)) ||
+ (!optimized && shapeFlag & 16 /* ARRAY_CHILDREN */)) {
+ unmountChildren(children, parentComponent, parentSuspense);
+ }
+ // an unmounted teleport should always remove its children if not disabled
+ if (shapeFlag & 64 /* TELEPORT */ &&
+ (doRemove || !isTeleportDisabled(vnode.props))) {
+ vnode.type.remove(vnode, internals);
+ }
+ if (doRemove) {
+ remove(vnode);
+ }
+ }
+ if ((vnodeHook = props && props.onVnodeUnmounted) || shouldInvokeDirs) {
+ queuePostRenderEffect(() => {
+ vnodeHook && invokeVNodeHook(vnodeHook, parentComponent, vnode);
+ shouldInvokeDirs &&
+ invokeDirectiveHook(vnode, null, parentComponent, 'unmounted');
+ }, parentSuspense);
+ }
+ };
+ const remove = vnode => {
+ const { type, el, anchor, transition } = vnode;
+ if (type === Fragment) {
+ removeFragment(el, anchor);
+ return;
+ }
+ if (type === Static) {
+ removeStaticNode(vnode);
+ return;
+ }
+ const performRemove = () => {
+ hostRemove(el);
+ if (transition && !transition.persisted && transition.afterLeave) {
+ transition.afterLeave();
+ }
+ };
+ if (vnode.shapeFlag & 1 /* ELEMENT */ &&
+ transition &&
+ !transition.persisted) {
+ const { leave, delayLeave } = transition;
+ const performLeave = () => leave(el, performRemove);
+ if (delayLeave) {
+ delayLeave(vnode.el, performRemove, performLeave);
+ }
+ else {
+ performLeave();
+ }
+ }
+ else {
+ performRemove();
+ }
+ };
+ const removeFragment = (cur, end) => {
+ // For fragments, directly remove all contained DOM nodes.
+ // (fragment child nodes cannot have transition)
+ let next;
+ while (cur !== end) {
+ next = hostNextSibling(cur);
+ hostRemove(cur);
+ cur = next;
+ }
+ hostRemove(end);
+ };
+ const unmountComponent = (instance, parentSuspense, doRemove) => {
+ if ( instance.type.__hmrId) {
+ unregisterHMR(instance);
+ }
+ const { bum, effects, update, subTree, um } = instance;
+ // beforeUnmount hook
+ if (bum) {
+ invokeArrayFns(bum);
+ }
+ if (effects) {
+ for (let i = 0; i < effects.length; i++) {
+ stop(effects[i]);
+ }
+ }
+ // update may be null if a component is unmounted before its async
+ // setup has resolved.
+ if (update) {
+ stop(update);
+ unmount(subTree, instance, parentSuspense, doRemove);
+ }
+ // unmounted hook
+ if (um) {
+ queuePostRenderEffect(um, parentSuspense);
+ }
+ queuePostRenderEffect(() => {
+ instance.isUnmounted = true;
+ }, parentSuspense);
+ // A component with async dep inside a pending suspense is unmounted before
+ // its async dep resolves. This should remove the dep from the suspense, and
+ // cause the suspense to resolve immediately if that was the last dep.
+ if (
+ parentSuspense &&
+ parentSuspense.pendingBranch &&
+ !parentSuspense.isUnmounted &&
+ instance.asyncDep &&
+ !instance.asyncResolved &&
+ instance.suspenseId === parentSuspense.pendingId) {
+ parentSuspense.deps--;
+ if (parentSuspense.deps === 0) {
+ parentSuspense.resolve();
+ }
+ }
+ {
+ devtoolsComponentRemoved(instance);
+ }
+ };
+ const unmountChildren = (children, parentComponent, parentSuspense, doRemove = false, optimized = false, start = 0) => {
+ for (let i = start; i < children.length; i++) {
+ unmount(children[i], parentComponent, parentSuspense, doRemove, optimized);
+ }
+ };
+ const getNextHostNode = vnode => {
+ if (vnode.shapeFlag & 6 /* COMPONENT */) {
+ return getNextHostNode(vnode.component.subTree);
+ }
+ if ( vnode.shapeFlag & 128 /* SUSPENSE */) {
+ return vnode.suspense.next();
+ }
+ return hostNextSibling((vnode.anchor || vnode.el));
+ };
+ const render = (vnode, container) => {
+ if (vnode == null) {
+ if (container._vnode) {
+ unmount(container._vnode, null, null, true);
+ }
+ }
+ else {
+ patch(container._vnode || null, vnode, container);
+ }
+ flushPostFlushCbs();
+ container._vnode = vnode;
+ };
+ const internals = {
+ p: patch,
+ um: unmount,
+ m: move,
+ r: remove,
+ mt: mountComponent,
+ mc: mountChildren,
+ pc: patchChildren,
+ pbc: patchBlockChildren,
+ n: getNextHostNode,
+ o: options
+ };
+ let hydrate;
+ let hydrateNode;
+ if (createHydrationFns) {
+ [hydrate, hydrateNode] = createHydrationFns(internals);
+ }
+ return {
+ render,
+ hydrate,
+ createApp: createAppAPI(render, hydrate)
+ };
+ }
+ function invokeVNodeHook(hook, instance, vnode, prevVNode = null) {
+ callWithAsyncErrorHandling(hook, instance, 7 /* VNODE_HOOK */, [
+ vnode,
+ prevVNode
+ ]);
+ }
+ /**
+ * #1156
+ * When a component is HMR-enabled, we need to make sure that all static nodes
+ * inside a block also inherit the DOM element from the previous tree so that
+ * HMR updates (which are full updates) can retrieve the element for patching.
+ *
+ * #2080
+ * Inside keyed `template` fragment static children, if a fragment is moved,
+ * the children will always moved so that need inherit el form previous nodes
+ * to ensure correct moved position.
+ */
+ function traverseStaticChildren(n1, n2, shallow = false) {
+ const ch1 = n1.children;
+ const ch2 = n2.children;
+ if (isArray(ch1) && isArray(ch2)) {
+ for (let i = 0; i < ch1.length; i++) {
+ // this is only called in the optimized path so array children are
+ // guaranteed to be vnodes
+ const c1 = ch1[i];
+ let c2 = ch2[i];
+ if (c2.shapeFlag & 1 /* ELEMENT */ && !c2.dynamicChildren) {
+ if (c2.patchFlag <= 0 || c2.patchFlag === 32 /* HYDRATE_EVENTS */) {
+ c2 = ch2[i] = cloneIfMounted(ch2[i]);
+ c2.el = c1.el;
+ }
+ if (!shallow)
+ traverseStaticChildren(c1, c2);
+ }
+ // also inherit for comment nodes, but not placeholders (e.g. v-if which
+ // would have received .el during block patch)
+ if ( c2.type === Comment && !c2.el) {
+ c2.el = c1.el;
+ }
+ }
+ }
+ }
+ // https://en.wikipedia.org/wiki/Longest_increasing_subsequence
+ function getSequence(arr) {
+ const p = arr.slice();
+ const result = [0];
+ let i, j, u, v, c;
+ const len = arr.length;
+ for (i = 0; i < len; i++) {
+ const arrI = arr[i];
+ if (arrI !== 0) {
+ j = result[result.length - 1];
+ if (arr[j] < arrI) {
+ p[i] = j;
+ result.push(i);
+ continue;
+ }
+ u = 0;
+ v = result.length - 1;
+ while (u < v) {
+ c = ((u + v) / 2) | 0;
+ if (arr[result[c]] < arrI) {
+ u = c + 1;
+ }
+ else {
+ v = c;
+ }
+ }
+ if (arrI < arr[result[u]]) {
+ if (u > 0) {
+ p[i] = result[u - 1];
+ }
+ result[u] = i;
+ }
+ }
+ }
+ u = result.length;
+ v = result[u - 1];
+ while (u-- > 0) {
+ result[u] = v;
+ v = p[v];
+ }
+ return result;
+ }
+
+ const isTeleport = (type) => type.__isTeleport;
+ const isTeleportDisabled = (props) => props && (props.disabled || props.disabled === '');
+ const isTargetSVG = (target) => typeof SVGElement !== 'undefined' && target instanceof SVGElement;
+ const resolveTarget = (props, select) => {
+ const targetSelector = props && props.to;
+ if (isString(targetSelector)) {
+ if (!select) {
+
+ warn(`Current renderer does not support string target for Teleports. ` +
+ `(missing querySelector renderer option)`);
+ return null;
+ }
+ else {
+ const target = select(targetSelector);
+ if (!target) {
+
+ warn(`Failed to locate Teleport target with selector "${targetSelector}". ` +
+ `Note the target element must exist before the component is mounted - ` +
+ `i.e. the target cannot be rendered by the component itself, and ` +
+ `ideally should be outside of the entire Vue component tree.`);
+ }
+ return target;
+ }
+ }
+ else {
+ if ( !targetSelector && !isTeleportDisabled(props)) {
+ warn(`Invalid Teleport target: ${targetSelector}`);
+ }
+ return targetSelector;
+ }
+ };
+ const TeleportImpl = {
+ __isTeleport: true,
+ process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, internals) {
+ const { mc: mountChildren, pc: patchChildren, pbc: patchBlockChildren, o: { insert, querySelector, createText, createComment } } = internals;
+ const disabled = isTeleportDisabled(n2.props);
+ const { shapeFlag, children } = n2;
+ if (n1 == null) {
+ // insert anchors in the main view
+ const placeholder = (n2.el = createComment('teleport start')
+ );
+ const mainAnchor = (n2.anchor = createComment('teleport end')
+ );
+ insert(placeholder, container, anchor);
+ insert(mainAnchor, container, anchor);
+ const target = (n2.target = resolveTarget(n2.props, querySelector));
+ const targetAnchor = (n2.targetAnchor = createText(''));
+ if (target) {
+ insert(targetAnchor, target);
+ // #2652 we could be teleporting from a non-SVG tree into an SVG tree
+ isSVG = isSVG || isTargetSVG(target);
+ }
+ else if ( !disabled) {
+ warn('Invalid Teleport target on mount:', target, `(${typeof target})`);
+ }
+ const mount = (container, anchor) => {
+ // Teleport *always* has Array children. This is enforced in both the
+ // compiler and vnode children normalization.
+ if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
+ mountChildren(children, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
+ }
+ };
+ if (disabled) {
+ mount(container, mainAnchor);
+ }
+ else if (target) {
+ mount(target, targetAnchor);
+ }
+ }
+ else {
+ // update content
+ n2.el = n1.el;
+ const mainAnchor = (n2.anchor = n1.anchor);
+ const target = (n2.target = n1.target);
+ const targetAnchor = (n2.targetAnchor = n1.targetAnchor);
+ const wasDisabled = isTeleportDisabled(n1.props);
+ const currentContainer = wasDisabled ? container : target;
+ const currentAnchor = wasDisabled ? mainAnchor : targetAnchor;
+ isSVG = isSVG || isTargetSVG(target);
+ if (n2.dynamicChildren) {
+ // fast path when the teleport happens to be a block root
+ patchBlockChildren(n1.dynamicChildren, n2.dynamicChildren, currentContainer, parentComponent, parentSuspense, isSVG);
+ // even in block tree mode we need to make sure all root-level nodes
+ // in the teleport inherit previous DOM references so that they can
+ // be moved in future patches.
+ traverseStaticChildren(n1, n2, true);
+ }
+ else if (!optimized) {
+ patchChildren(n1, n2, currentContainer, currentAnchor, parentComponent, parentSuspense, isSVG);
+ }
+ if (disabled) {
+ if (!wasDisabled) {
+ // enabled -> disabled
+ // move into main container
+ moveTeleport(n2, container, mainAnchor, internals, 1 /* TOGGLE */);
+ }
+ }
+ else {
+ // target changed
+ if ((n2.props && n2.props.to) !== (n1.props && n1.props.to)) {
+ const nextTarget = (n2.target = resolveTarget(n2.props, querySelector));
+ if (nextTarget) {
+ moveTeleport(n2, nextTarget, null, internals, 0 /* TARGET_CHANGE */);
+ }
+ else {
+ warn('Invalid Teleport target on update:', target, `(${typeof target})`);
+ }
+ }
+ else if (wasDisabled) {
+ // disabled -> enabled
+ // move into teleport target
+ moveTeleport(n2, target, targetAnchor, internals, 1 /* TOGGLE */);
+ }
+ }
+ }
+ },
+ remove(vnode, { r: remove, o: { remove: hostRemove } }) {
+ const { shapeFlag, children, anchor } = vnode;
+ hostRemove(anchor);
+ if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
+ for (let i = 0; i < children.length; i++) {
+ remove(children[i]);
+ }
+ }
+ },
+ move: moveTeleport,
+ hydrate: hydrateTeleport
+ };
+ function moveTeleport(vnode, container, parentAnchor, { o: { insert }, m: move }, moveType = 2 /* REORDER */) {
+ // move target anchor if this is a target change.
+ if (moveType === 0 /* TARGET_CHANGE */) {
+ insert(vnode.targetAnchor, container, parentAnchor);
+ }
+ const { el, anchor, shapeFlag, children, props } = vnode;
+ const isReorder = moveType === 2 /* REORDER */;
+ // move main view anchor if this is a re-order.
+ if (isReorder) {
+ insert(el, container, parentAnchor);
+ }
+ // if this is a re-order and teleport is enabled (content is in target)
+ // do not move children. So the opposite is: only move children if this
+ // is not a reorder, or the teleport is disabled
+ if (!isReorder || isTeleportDisabled(props)) {
+ // Teleport has either Array children or no children.
+ if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
+ for (let i = 0; i < children.length; i++) {
+ move(children[i], container, parentAnchor, 2 /* REORDER */);
+ }
+ }
+ }
+ // move main view anchor if this is a re-order.
+ if (isReorder) {
+ insert(anchor, container, parentAnchor);
+ }
+ }
+ function hydrateTeleport(node, vnode, parentComponent, parentSuspense, optimized, { o: { nextSibling, parentNode, querySelector } }, hydrateChildren) {
+ const target = (vnode.target = resolveTarget(vnode.props, querySelector));
+ if (target) {
+ // if multiple teleports rendered to the same target element, we need to
+ // pick up from where the last teleport finished instead of the first node
+ const targetNode = target._lpa || target.firstChild;
+ if (vnode.shapeFlag & 16 /* ARRAY_CHILDREN */) {
+ if (isTeleportDisabled(vnode.props)) {
+ vnode.anchor = hydrateChildren(nextSibling(node), vnode, parentNode(node), parentComponent, parentSuspense, optimized);
+ vnode.targetAnchor = targetNode;
+ }
+ else {
+ vnode.anchor = nextSibling(node);
+ vnode.targetAnchor = hydrateChildren(targetNode, vnode, target, parentComponent, parentSuspense, optimized);
+ }
+ target._lpa =
+ vnode.targetAnchor && nextSibling(vnode.targetAnchor);
+ }
+ }
+ return vnode.anchor && nextSibling(vnode.anchor);
+ }
+ // Force-casted public typing for h and TSX props inference
+ const Teleport = TeleportImpl;
+
+ const COMPONENTS = 'components';
+ const DIRECTIVES = 'directives';
+ /**
+ * @private
+ */
+ function resolveComponent(name) {
+ return resolveAsset(COMPONENTS, name) || name;
+ }
+ const NULL_DYNAMIC_COMPONENT = Symbol();
+ /**
+ * @private
+ */
+ function resolveDynamicComponent(component) {
+ if (isString(component)) {
+ return resolveAsset(COMPONENTS, component, false) || component;
+ }
+ else {
+ // invalid types will fallthrough to createVNode and raise warning
+ return (component || NULL_DYNAMIC_COMPONENT);
+ }
+ }
+ /**
+ * @private
+ */
+ function resolveDirective(name) {
+ return resolveAsset(DIRECTIVES, name);
+ }
+ // implementation
+ function resolveAsset(type, name, warnMissing = true) {
+ const instance = currentRenderingInstance || currentInstance;
+ if (instance) {
+ const Component = instance.type;
+ // self name has highest priority
+ if (type === COMPONENTS) {
+ // special self referencing call generated by compiler
+ // inferred from SFC filename
+ if (name === `_self`) {
+ return Component;
+ }
+ const selfName = getComponentName(Component);
+ if (selfName &&
+ (selfName === name ||
+ selfName === camelize(name) ||
+ selfName === capitalize(camelize(name)))) {
+ return Component;
+ }
+ }
+ const res =
+ // local registration
+ // check instance[type] first for components with mixin or extends.
+ resolve(instance[type] || Component[type], name) ||
+ // global registration
+ resolve(instance.appContext[type], name);
+ if ( warnMissing && !res) {
+ warn(`Failed to resolve ${type.slice(0, -1)}: ${name}`);
+ }
+ return res;
+ }
+ else {
+ warn(`resolve${capitalize(type.slice(0, -1))} ` +
+ `can only be used in render() or setup().`);
+ }
+ }
+ function resolve(registry, name) {
+ return (registry &&
+ (registry[name] ||
+ registry[camelize(name)] ||
+ registry[capitalize(camelize(name))]));
+ }
+
+ const Fragment = Symbol( 'Fragment' );
+ const Text = Symbol( 'Text' );
+ const Comment = Symbol( 'Comment' );
+ const Static = Symbol( 'Static' );
+ // Since v-if and v-for are the two possible ways node structure can dynamically
+ // change, once we consider v-if branches and each v-for fragment a block, we
+ // can divide a template into nested blocks, and within each block the node
+ // structure would be stable. This allows us to skip most children diffing
+ // and only worry about the dynamic nodes (indicated by patch flags).
+ const blockStack = [];
+ let currentBlock = null;
+ /**
+ * Open a block.
+ * This must be called before `createBlock`. It cannot be part of `createBlock`
+ * because the children of the block are evaluated before `createBlock` itself
+ * is called. The generated code typically looks like this:
+ *
+ * ```js
+ * function render() {
+ * return (openBlock(),createBlock('div', null, [...]))
+ * }
+ * ```
+ * disableTracking is true when creating a v-for fragment block, since a v-for
+ * fragment always diffs its children.
+ *
+ * @private
+ */
+ function openBlock(disableTracking = false) {
+ blockStack.push((currentBlock = disableTracking ? null : []));
+ }
+ function closeBlock() {
+ blockStack.pop();
+ currentBlock = blockStack[blockStack.length - 1] || null;
+ }
+ // Whether we should be tracking dynamic child nodes inside a block.
+ // Only tracks when this value is > 0
+ // We are not using a simple boolean because this value may need to be
+ // incremented/decremented by nested usage of v-once (see below)
+ let shouldTrack$1 = 1;
+ /**
+ * Block tracking sometimes needs to be disabled, for example during the
+ * creation of a tree that needs to be cached by v-once. The compiler generates
+ * code like this:
+ *
+ * ``` js
+ * _cache[1] || (
+ * setBlockTracking(-1),
+ * _cache[1] = createVNode(...),
+ * setBlockTracking(1),
+ * _cache[1]
+ * )
+ * ```
+ *
+ * @private
+ */
+ function setBlockTracking(value) {
+ shouldTrack$1 += value;
+ }
+ /**
+ * Create a block root vnode. Takes the same exact arguments as `createVNode`.
+ * A block root keeps track of dynamic nodes within the block in the
+ * `dynamicChildren` array.
+ *
+ * @private
+ */
+ function createBlock(type, props, children, patchFlag, dynamicProps) {
+ const vnode = createVNode(type, props, children, patchFlag, dynamicProps, true /* isBlock: prevent a block from tracking itself */);
+ // save current block children on the block vnode
+ vnode.dynamicChildren = currentBlock || EMPTY_ARR;
+ // close block
+ closeBlock();
+ // a block is always going to be patched, so track it as a child of its
+ // parent block
+ if (shouldTrack$1 > 0 && currentBlock) {
+ currentBlock.push(vnode);
+ }
+ return vnode;
+ }
+ function isVNode(value) {
+ return value ? value.__v_isVNode === true : false;
+ }
+ function isSameVNodeType(n1, n2) {
+ if (
+ n2.shapeFlag & 6 /* COMPONENT */ &&
+ hmrDirtyComponents.has(n2.type)) {
+ // HMR only: if the component has been hot-updated, force a reload.
+ return false;
+ }
+ return n1.type === n2.type && n1.key === n2.key;
+ }
+ let vnodeArgsTransformer;
+ /**
+ * Internal API for registering an arguments transform for createVNode
+ * used for creating stubs in the test-utils
+ * It is *internal* but needs to be exposed for test-utils to pick up proper
+ * typings
+ */
+ function transformVNodeArgs(transformer) {
+ vnodeArgsTransformer = transformer;
+ }
+ const createVNodeWithArgsTransform = (...args) => {
+ return _createVNode(...(vnodeArgsTransformer
+ ? vnodeArgsTransformer(args, currentRenderingInstance)
+ : args));
+ };
+ const InternalObjectKey = `__vInternal`;
+ const normalizeKey = ({ key }) => key != null ? key : null;
+ const normalizeRef = ({ ref }) => {
+ return (ref != null
+ ? isString(ref) || isRef(ref) || isFunction(ref)
+ ? { i: currentRenderingInstance, r: ref }
+ : ref
+ : null);
+ };
+ const createVNode = ( createVNodeWithArgsTransform
+ );
+ function _createVNode(type, props = null, children = null, patchFlag = 0, dynamicProps = null, isBlockNode = false) {
+ if (!type || type === NULL_DYNAMIC_COMPONENT) {
+ if ( !type) {
+ warn(`Invalid vnode type when creating vnode: ${type}.`);
+ }
+ type = Comment;
+ }
+ if (isVNode(type)) {
+ // createVNode receiving an existing vnode. This happens in cases like
+ // <component :is="vnode"/>
+ // #2078 make sure to merge refs during the clone instead of overwriting it
+ const cloned = cloneVNode(type, props, true /* mergeRef: true */);
+ if (children) {
+ normalizeChildren(cloned, children);
+ }
+ return cloned;
+ }
+ // class component normalization.
+ if (isClassComponent(type)) {
+ type = type.__vccOpts;
+ }
+ // class & style normalization.
+ if (props) {
+ // for reactive or proxy objects, we need to clone it to enable mutation.
+ if (isProxy(props) || InternalObjectKey in props) {
+ props = extend({}, props);
+ }
+ let { class: klass, style } = props;
+ if (klass && !isString(klass)) {
+ props.class = normalizeClass(klass);
+ }
+ if (isObject(style)) {
+ // reactive state objects need to be cloned since they are likely to be
+ // mutated
+ if (isProxy(style) && !isArray(style)) {
+ style = extend({}, style);
+ }
+ props.style = normalizeStyle(style);
+ }
+ }
+ // encode the vnode type information into a bitmap
+ const shapeFlag = isString(type)
+ ? 1 /* ELEMENT */
+ : isSuspense(type)
+ ? 128 /* SUSPENSE */
+ : isTeleport(type)
+ ? 64 /* TELEPORT */
+ : isObject(type)
+ ? 4 /* STATEFUL_COMPONENT */
+ : isFunction(type)
+ ? 2 /* FUNCTIONAL_COMPONENT */
+ : 0;
+ if ( shapeFlag & 4 /* STATEFUL_COMPONENT */ && isProxy(type)) {
+ type = toRaw(type);
+ warn(`Vue received a Component which was made a reactive object. This can ` +
+ `lead to unnecessary performance overhead, and should be avoided by ` +
+ `marking the component with \`markRaw\` or using \`shallowRef\` ` +
+ `instead of \`ref\`.`, `\nComponent that was made reactive: `, type);
+ }
+ const vnode = {
+ __v_isVNode: true,
+ ["__v_skip" /* SKIP */]: true,
+ type,
+ props,
+ key: props && normalizeKey(props),
+ ref: props && normalizeRef(props),
+ scopeId: currentScopeId,
+ children: null,
+ component: null,
+ suspense: null,
+ ssContent: null,
+ ssFallback: null,
+ dirs: null,
+ transition: null,
+ el: null,
+ anchor: null,
+ target: null,
+ targetAnchor: null,
+ staticCount: 0,
+ shapeFlag,
+ patchFlag,
+ dynamicProps,
+ dynamicChildren: null,
+ appContext: null
+ };
+ // validate key
+ if ( vnode.key !== vnode.key) {
+ warn(`VNode created with invalid key (NaN). VNode type:`, vnode.type);
+ }
+ normalizeChildren(vnode, children);
+ // normalize suspense children
+ if ( shapeFlag & 128 /* SUSPENSE */) {
+ const { content, fallback } = normalizeSuspenseChildren(vnode);
+ vnode.ssContent = content;
+ vnode.ssFallback = fallback;
+ }
+ if (shouldTrack$1 > 0 &&
+ // avoid a block node from tracking itself
+ !isBlockNode &&
+ // has current parent block
+ currentBlock &&
+ // presence of a patch flag indicates this node needs patching on updates.
+ // component nodes also should always be patched, because even if the
+ // component doesn't need to update, it needs to persist the instance on to
+ // the next vnode so that it can be properly unmounted later.
+ (patchFlag > 0 || shapeFlag & 6 /* COMPONENT */) &&
+ // the EVENTS flag is only for hydration and if it is the only flag, the
+ // vnode should not be considered dynamic due to handler caching.
+ patchFlag !== 32 /* HYDRATE_EVENTS */) {
+ currentBlock.push(vnode);
+ }
+ return vnode;
+ }
+ function cloneVNode(vnode, extraProps, mergeRef = false) {
+ // This is intentionally NOT using spread or extend to avoid the runtime
+ // key enumeration cost.
+ const { props, ref, patchFlag } = vnode;
+ const mergedProps = extraProps ? mergeProps(props || {}, extraProps) : props;
+ return {
+ __v_isVNode: true,
+ ["__v_skip" /* SKIP */]: true,
+ type: vnode.type,
+ props: mergedProps,
+ key: mergedProps && normalizeKey(mergedProps),
+ ref: extraProps && extraProps.ref
+ ? // #2078 in the case of <component :is="vnode" ref="extra"/>
+ // if the vnode itself already has a ref, cloneVNode will need to merge
+ // the refs so the single vnode can be set on multiple refs
+ mergeRef && ref
+ ? isArray(ref)
+ ? ref.concat(normalizeRef(extraProps))
+ : [ref, normalizeRef(extraProps)]
+ : normalizeRef(extraProps)
+ : ref,
+ scopeId: vnode.scopeId,
+ children: vnode.children,
+ target: vnode.target,
+ targetAnchor: vnode.targetAnchor,
+ staticCount: vnode.staticCount,
+ shapeFlag: vnode.shapeFlag,
+ // if the vnode is cloned with extra props, we can no longer assume its
+ // existing patch flag to be reliable and need to add the FULL_PROPS flag.
+ // note: perserve flag for fragments since they use the flag for children
+ // fast paths only.
+ patchFlag: extraProps && vnode.type !== Fragment
+ ? patchFlag === -1 // hoisted node
+ ? 16 /* FULL_PROPS */
+ : patchFlag | 16 /* FULL_PROPS */
+ : patchFlag,
+ dynamicProps: vnode.dynamicProps,
+ dynamicChildren: vnode.dynamicChildren,
+ appContext: vnode.appContext,
+ dirs: vnode.dirs,
+ transition: vnode.transition,
+ // These should technically only be non-null on mounted VNodes. However,
+ // they *should* be copied for kept-alive vnodes. So we just always copy
+ // them since them being non-null during a mount doesn't affect the logic as
+ // they will simply be overwritten.
+ component: vnode.component,
+ suspense: vnode.suspense,
+ ssContent: vnode.ssContent && cloneVNode(vnode.ssContent),
+ ssFallback: vnode.ssFallback && cloneVNode(vnode.ssFallback),
+ el: vnode.el,
+ anchor: vnode.anchor
+ };
+ }
+ /**
+ * @private
+ */
+ function createTextVNode(text = ' ', flag = 0) {
+ return createVNode(Text, null, text, flag);
+ }
+ /**
+ * @private
+ */
+ function createStaticVNode(content, numberOfNodes) {
+ // A static vnode can contain multiple stringified elements, and the number
+ // of elements is necessary for hydration.
+ const vnode = createVNode(Static, null, content);
+ vnode.staticCount = numberOfNodes;
+ return vnode;
+ }
+ /**
+ * @private
+ */
+ function createCommentVNode(text = '',
+ // when used as the v-else branch, the comment node must be created as a
+ // block to ensure correct updates.
+ asBlock = false) {
+ return asBlock
+ ? (openBlock(), createBlock(Comment, null, text))
+ : createVNode(Comment, null, text);
+ }
+ function normalizeVNode(child) {
+ if (child == null || typeof child === 'boolean') {
+ // empty placeholder
+ return createVNode(Comment);
+ }
+ else if (isArray(child)) {
+ // fragment
+ return createVNode(Fragment, null, child);
+ }
+ else if (typeof child === 'object') {
+ // already vnode, this should be the most common since compiled templates
+ // always produce all-vnode children arrays
+ return child.el === null ? child : cloneVNode(child);
+ }
+ else {
+ // strings and numbers
+ return createVNode(Text, null, String(child));
+ }
+ }
+ // optimized normalization for template-compiled render fns
+ function cloneIfMounted(child) {
+ return child.el === null ? child : cloneVNode(child);
+ }
+ function normalizeChildren(vnode, children) {
+ let type = 0;
+ const { shapeFlag } = vnode;
+ if (children == null) {
+ children = null;
+ }
+ else if (isArray(children)) {
+ type = 16 /* ARRAY_CHILDREN */;
+ }
+ else if (typeof children === 'object') {
+ if (shapeFlag & 1 /* ELEMENT */ || shapeFlag & 64 /* TELEPORT */) {
+ // Normalize slot to plain children for plain element and Teleport
+ const slot = children.default;
+ if (slot) {
+ // _c marker is added by withCtx() indicating this is a compiled slot
+ slot._c && setCompiledSlotRendering(1);
+ normalizeChildren(vnode, slot());
+ slot._c && setCompiledSlotRendering(-1);
+ }
+ return;
+ }
+ else {
+ type = 32 /* SLOTS_CHILDREN */;
+ const slotFlag = children._;
+ if (!slotFlag && !(InternalObjectKey in children)) {
+ children._ctx = currentRenderingInstance;
+ }
+ else if (slotFlag === 3 /* FORWARDED */ && currentRenderingInstance) {
+ // a child component receives forwarded slots from the parent.
+ // its slot type is determined by its parent's slot type.
+ if (currentRenderingInstance.vnode.patchFlag & 1024 /* DYNAMIC_SLOTS */) {
+ children._ = 2 /* DYNAMIC */;
+ vnode.patchFlag |= 1024 /* DYNAMIC_SLOTS */;
+ }
+ else {
+ children._ = 1 /* STABLE */;
+ }
+ }
+ }
+ }
+ else if (isFunction(children)) {
+ children = { default: children, _ctx: currentRenderingInstance };
+ type = 32 /* SLOTS_CHILDREN */;
+ }
+ else {
+ children = String(children);
+ // force teleport children to array so it can be moved around
+ if (shapeFlag & 64 /* TELEPORT */) {
+ type = 16 /* ARRAY_CHILDREN */;
+ children = [createTextVNode(children)];
+ }
+ else {
+ type = 8 /* TEXT_CHILDREN */;
+ }
+ }
+ vnode.children = children;
+ vnode.shapeFlag |= type;
+ }
+ function mergeProps(...args) {
+ const ret = extend({}, args[0]);
+ for (let i = 1; i < args.length; i++) {
+ const toMerge = args[i];
+ for (const key in toMerge) {
+ if (key === 'class') {
+ if (ret.class !== toMerge.class) {
+ ret.class = normalizeClass([ret.class, toMerge.class]);
+ }
+ }
+ else if (key === 'style') {
+ ret.style = normalizeStyle([ret.style, toMerge.style]);
+ }
+ else if (isOn(key)) {
+ const existing = ret[key];
+ const incoming = toMerge[key];
+ if (existing !== incoming) {
+ ret[key] = existing
+ ? [].concat(existing, toMerge[key])
+ : incoming;
+ }
+ }
+ else if (key !== '') {
+ ret[key] = toMerge[key];
+ }
+ }
+ }
+ return ret;
+ }
+
+ function provide(key, value) {
+ if (!currentInstance) {
+ {
+ warn(`provide() can only be used inside setup().`);
+ }
+ }
+ else {
+ let provides = currentInstance.provides;
+ // by default an instance inherits its parent's provides object
+ // but when it needs to provide values of its own, it creates its
+ // own provides object using parent provides object as prototype.
+ // this way in `inject` we can simply look up injections from direct
+ // parent and let the prototype chain do the work.
+ const parentProvides = currentInstance.parent && currentInstance.parent.provides;
+ if (parentProvides === provides) {
+ provides = currentInstance.provides = Object.create(parentProvides);
+ }
+ // TS doesn't allow symbol as index type
+ provides[key] = value;
+ }
+ }
+ function inject(key, defaultValue, treatDefaultAsFactory = false) {
+ // fallback to `currentRenderingInstance` so that this can be called in
+ // a functional component
+ const instance = currentInstance || currentRenderingInstance;
+ if (instance) {
+ // #2400
+ // to support `app.use` plugins,
+ // fallback to appContext's `provides` if the intance is at root
+ const provides = instance.parent == null
+ ? instance.vnode.appContext && instance.vnode.appContext.provides
+ : instance.parent.provides;
+ if (provides && key in provides) {
+ // TS doesn't allow symbol as index type
+ return provides[key];
+ }
+ else if (arguments.length > 1) {
+ return treatDefaultAsFactory && isFunction(defaultValue)
+ ? defaultValue()
+ : defaultValue;
+ }
+ else {
+ warn(`injection "${String(key)}" not found.`);
+ }
+ }
+ else {
+ warn(`inject() can only be used inside setup() or functional components.`);
+ }
+ }
+
+ function createDuplicateChecker() {
+ const cache = Object.create(null);
+ return (type, key) => {
+ if (cache[key]) {
+ warn(`${type} property "${key}" is already defined in ${cache[key]}.`);
+ }
+ else {
+ cache[key] = type;
+ }
+ };
+ }
+ let isInBeforeCreate = false;
+ function applyOptions(instance, options, deferredData = [], deferredWatch = [], deferredProvide = [], asMixin = false) {
+ const {
+ // composition
+ mixins, extends: extendsOptions,
+ // state
+ data: dataOptions, computed: computedOptions, methods, watch: watchOptions, provide: provideOptions, inject: injectOptions,
+ // assets
+ components, directives,
+ // lifecycle
+ beforeMount, mounted, beforeUpdate, updated, activated, deactivated, beforeDestroy, beforeUnmount, destroyed, unmounted, render, renderTracked, renderTriggered, errorCaptured,
+ // public API
+ expose } = options;
+ const publicThis = instance.proxy;
+ const ctx = instance.ctx;
+ const globalMixins = instance.appContext.mixins;
+ if (asMixin && render && instance.render === NOOP) {
+ instance.render = render;
+ }
+ // applyOptions is called non-as-mixin once per instance
+ if (!asMixin) {
+ isInBeforeCreate = true;
+ callSyncHook('beforeCreate', "bc" /* BEFORE_CREATE */, options, instance, globalMixins);
+ isInBeforeCreate = false;
+ // global mixins are applied first
+ applyMixins(instance, globalMixins, deferredData, deferredWatch, deferredProvide);
+ }
+ // extending a base component...
+ if (extendsOptions) {
+ applyOptions(instance, extendsOptions, deferredData, deferredWatch, deferredProvide, true);
+ }
+ // local mixins
+ if (mixins) {
+ applyMixins(instance, mixins, deferredData, deferredWatch, deferredProvide);
+ }
+ const checkDuplicateProperties = createDuplicateChecker() ;
+ {
+ const [propsOptions] = instance.propsOptions;
+ if (propsOptions) {
+ for (const key in propsOptions) {
+ checkDuplicateProperties("Props" /* PROPS */, key);
+ }
+ }
+ }
+ // options initialization order (to be consistent with Vue 2):
+ // - props (already done outside of this function)
+ // - inject
+ // - methods
+ // - data (deferred since it relies on `this` access)
+ // - computed
+ // - watch (deferred since it relies on `this` access)
+ if (injectOptions) {
+ if (isArray(injectOptions)) {
+ for (let i = 0; i < injectOptions.length; i++) {
+ const key = injectOptions[i];
+ ctx[key] = inject(key);
+ {
+ checkDuplicateProperties("Inject" /* INJECT */, key);
+ }
+ }
+ }
+ else {
+ for (const key in injectOptions) {
+ const opt = injectOptions[key];
+ if (isObject(opt)) {
+ ctx[key] = inject(opt.from || key, opt.default, true /* treat default function as factory */);
+ }
+ else {
+ ctx[key] = inject(opt);
+ }
+ {
+ checkDuplicateProperties("Inject" /* INJECT */, key);
+ }
+ }
+ }
+ }
+ if (methods) {
+ for (const key in methods) {
+ const methodHandler = methods[key];
+ if (isFunction(methodHandler)) {
+ ctx[key] = methodHandler.bind(publicThis);
+ {
+ checkDuplicateProperties("Methods" /* METHODS */, key);
+ }
+ }
+ else {
+ warn(`Method "${key}" has type "${typeof methodHandler}" in the component definition. ` +
+ `Did you reference the function correctly?`);
+ }
+ }
+ }
+ if (!asMixin) {
+ if (deferredData.length) {
+ deferredData.forEach(dataFn => resolveData(instance, dataFn, publicThis));
+ }
+ if (dataOptions) {
+ // @ts-ignore dataOptions is not fully type safe
+ resolveData(instance, dataOptions, publicThis);
+ }
+ {
+ const rawData = toRaw(instance.data);
+ for (const key in rawData) {
+ checkDuplicateProperties("Data" /* DATA */, key);
+ // expose data on ctx during dev
+ if (key[0] !== '$' && key[0] !== '_') {
+ Object.defineProperty(ctx, key, {
+ configurable: true,
+ enumerable: true,
+ get: () => rawData[key],
+ set: NOOP
+ });
+ }
+ }
+ }
+ }
+ else if (dataOptions) {
+ deferredData.push(dataOptions);
+ }
+ if (computedOptions) {
+ for (const key in computedOptions) {
+ const opt = computedOptions[key];
+ const get = isFunction(opt)
+ ? opt.bind(publicThis, publicThis)
+ : isFunction(opt.get)
+ ? opt.get.bind(publicThis, publicThis)
+ : NOOP;
+ if ( get === NOOP) {
+ warn(`Computed property "${key}" has no getter.`);
+ }
+ const set = !isFunction(opt) && isFunction(opt.set)
+ ? opt.set.bind(publicThis)
+ : () => {
+ warn(`Write operation failed: computed property "${key}" is readonly.`);
+ }
+ ;
+ const c = computed$1({
+ get,
+ set
+ });
+ Object.defineProperty(ctx, key, {
+ enumerable: true,
+ configurable: true,
+ get: () => c.value,
+ set: v => (c.value = v)
+ });
+ {
+ checkDuplicateProperties("Computed" /* COMPUTED */, key);
+ }
+ }
+ }
+ if (watchOptions) {
+ deferredWatch.push(watchOptions);
+ }
+ if (!asMixin && deferredWatch.length) {
+ deferredWatch.forEach(watchOptions => {
+ for (const key in watchOptions) {
+ createWatcher(watchOptions[key], ctx, publicThis, key);
+ }
+ });
+ }
+ if (provideOptions) {
+ deferredProvide.push(provideOptions);
+ }
+ if (!asMixin && deferredProvide.length) {
+ deferredProvide.forEach(provideOptions => {
+ const provides = isFunction(provideOptions)
+ ? provideOptions.call(publicThis)
+ : provideOptions;
+ Reflect.ownKeys(provides).forEach(key => {
+ provide(key, provides[key]);
+ });
+ });
+ }
+ // asset options.
+ // To reduce memory usage, only components with mixins or extends will have
+ // resolved asset registry attached to instance.
+ if (asMixin) {
+ if (components) {
+ extend(instance.components ||
+ (instance.components = extend({}, instance.type.components)), components);
+ }
+ if (directives) {
+ extend(instance.directives ||
+ (instance.directives = extend({}, instance.type.directives)), directives);
+ }
+ }
+ // lifecycle options
+ if (!asMixin) {
+ callSyncHook('created', "c" /* CREATED */, options, instance, globalMixins);
+ }
+ if (beforeMount) {
+ onBeforeMount(beforeMount.bind(publicThis));
+ }
+ if (mounted) {
+ onMounted(mounted.bind(publicThis));
+ }
+ if (beforeUpdate) {
+ onBeforeUpdate(beforeUpdate.bind(publicThis));
+ }
+ if (updated) {
+ onUpdated(updated.bind(publicThis));
+ }
+ if (activated) {
+ onActivated(activated.bind(publicThis));
+ }
+ if (deactivated) {
+ onDeactivated(deactivated.bind(publicThis));
+ }
+ if (errorCaptured) {
+ onErrorCaptured(errorCaptured.bind(publicThis));
+ }
+ if (renderTracked) {
+ onRenderTracked(renderTracked.bind(publicThis));
+ }
+ if (renderTriggered) {
+ onRenderTriggered(renderTriggered.bind(publicThis));
+ }
+ if ( beforeDestroy) {
+ warn(`\`beforeDestroy\` has been renamed to \`beforeUnmount\`.`);
+ }
+ if (beforeUnmount) {
+ onBeforeUnmount(beforeUnmount.bind(publicThis));
+ }
+ if ( destroyed) {
+ warn(`\`destroyed\` has been renamed to \`unmounted\`.`);
+ }
+ if (unmounted) {
+ onUnmounted(unmounted.bind(publicThis));
+ }
+ if (isArray(expose)) {
+ if (!asMixin) {
+ if (expose.length) {
+ const exposed = instance.exposed || (instance.exposed = proxyRefs({}));
+ expose.forEach(key => {
+ exposed[key] = toRef(publicThis, key);
+ });
+ }
+ else if (!instance.exposed) {
+ instance.exposed = EMPTY_OBJ;
+ }
+ }
+ else {
+ warn(`The \`expose\` option is ignored when used in mixins.`);
+ }
+ }
+ }
+ function callSyncHook(name, type, options, instance, globalMixins) {
+ callHookFromMixins(name, type, globalMixins, instance);
+ const { extends: base, mixins } = options;
+ if (base) {
+ callHookFromExtends(name, type, base, instance);
+ }
+ if (mixins) {
+ callHookFromMixins(name, type, mixins, instance);
+ }
+ const selfHook = options[name];
+ if (selfHook) {
+ callWithAsyncErrorHandling(selfHook.bind(instance.proxy), instance, type);
+ }
+ }
+ function callHookFromExtends(name, type, base, instance) {
+ if (base.extends) {
+ callHookFromExtends(name, type, base.extends, instance);
+ }
+ const baseHook = base[name];
+ if (baseHook) {
+ callWithAsyncErrorHandling(baseHook.bind(instance.proxy), instance, type);
+ }
+ }
+ function callHookFromMixins(name, type, mixins, instance) {
+ for (let i = 0; i < mixins.length; i++) {
+ const chainedMixins = mixins[i].mixins;
+ if (chainedMixins) {
+ callHookFromMixins(name, type, chainedMixins, instance);
+ }
+ const fn = mixins[i][name];
+ if (fn) {
+ callWithAsyncErrorHandling(fn.bind(instance.proxy), instance, type);
+ }
+ }
+ }
+ function applyMixins(instance, mixins, deferredData, deferredWatch, deferredProvide) {
+ for (let i = 0; i < mixins.length; i++) {
+ applyOptions(instance, mixins[i], deferredData, deferredWatch, deferredProvide, true);
+ }
+ }
+ function resolveData(instance, dataFn, publicThis) {
+ if ( !isFunction(dataFn)) {
+ warn(`The data option must be a function. ` +
+ `Plain object usage is no longer supported.`);
+ }
+ const data = dataFn.call(publicThis, publicThis);
+ if ( isPromise(data)) {
+ warn(`data() returned a Promise - note data() cannot be async; If you ` +
+ `intend to perform data fetching before component renders, use ` +
+ `async setup() + <Suspense>.`);
+ }
+ if (!isObject(data)) {
+ warn(`data() should return an object.`);
+ }
+ else if (instance.data === EMPTY_OBJ) {
+ instance.data = reactive(data);
+ }
+ else {
+ // existing data: this is a mixin or extends.
+ extend(instance.data, data);
+ }
+ }
+ function createWatcher(raw, ctx, publicThis, key) {
+ const getter = key.includes('.')
+ ? createPathGetter(publicThis, key)
+ : () => publicThis[key];
+ if (isString(raw)) {
+ const handler = ctx[raw];
+ if (isFunction(handler)) {
+ watch(getter, handler);
+ }
+ else {
+ warn(`Invalid watch handler specified by key "${raw}"`, handler);
+ }
+ }
+ else if (isFunction(raw)) {
+ watch(getter, raw.bind(publicThis));
+ }
+ else if (isObject(raw)) {
+ if (isArray(raw)) {
+ raw.forEach(r => createWatcher(r, ctx, publicThis, key));
+ }
+ else {
+ const handler = isFunction(raw.handler)
+ ? raw.handler.bind(publicThis)
+ : ctx[raw.handler];
+ if (isFunction(handler)) {
+ watch(getter, handler, raw);
+ }
+ else {
+ warn(`Invalid watch handler specified by key "${raw.handler}"`, handler);
+ }
+ }
+ }
+ else {
+ warn(`Invalid watch option: "${key}"`, raw);
+ }
+ }
+ function createPathGetter(ctx, path) {
+ const segments = path.split('.');
+ return () => {
+ let cur = ctx;
+ for (let i = 0; i < segments.length && cur; i++) {
+ cur = cur[segments[i]];
+ }
+ return cur;
+ };
+ }
+ function resolveMergedOptions(instance) {
+ const raw = instance.type;
+ const { __merged, mixins, extends: extendsOptions } = raw;
+ if (__merged)
+ return __merged;
+ const globalMixins = instance.appContext.mixins;
+ if (!globalMixins.length && !mixins && !extendsOptions)
+ return raw;
+ const options = {};
+ globalMixins.forEach(m => mergeOptions(options, m, instance));
+ mergeOptions(options, raw, instance);
+ return (raw.__merged = options);
+ }
+ function mergeOptions(to, from, instance) {
+ const strats = instance.appContext.config.optionMergeStrategies;
+ const { mixins, extends: extendsOptions } = from;
+ extendsOptions && mergeOptions(to, extendsOptions, instance);
+ mixins &&
+ mixins.forEach((m) => mergeOptions(to, m, instance));
+ for (const key in from) {
+ if (strats && hasOwn(strats, key)) {
+ to[key] = strats[key](to[key], from[key], instance.proxy, key);
+ }
+ else {
+ to[key] = from[key];
+ }
+ }
+ }
+
+ /**
+ * #2437 In Vue 3, functional components do not have a public instance proxy but
+ * they exist in the internal parent chain. For code that relies on traversing
+ * public $parent chains, skip functional ones and go to the parent instead.
+ */
+ const getPublicInstance = (i) => i && (i.proxy ? i.proxy : getPublicInstance(i.parent));
+ const publicPropertiesMap = extend(Object.create(null), {
+ $: i => i,
+ $el: i => i.vnode.el,
+ $data: i => i.data,
+ $props: i => ( shallowReadonly(i.props) ),
+ $attrs: i => ( shallowReadonly(i.attrs) ),
+ $slots: i => ( shallowReadonly(i.slots) ),
+ $refs: i => ( shallowReadonly(i.refs) ),
+ $parent: i => getPublicInstance(i.parent),
+ $root: i => i.root && i.root.proxy,
+ $emit: i => i.emit,
+ $options: i => ( resolveMergedOptions(i) ),
+ $forceUpdate: i => () => queueJob(i.update),
+ $nextTick: i => nextTick.bind(i.proxy),
+ $watch: i => ( instanceWatch.bind(i) )
+ });
+ const PublicInstanceProxyHandlers = {
+ get({ _: instance }, key) {
+ const { ctx, setupState, data, props, accessCache, type, appContext } = instance;
+ // let @vue/reactivity know it should never observe Vue public instances.
+ if (key === "__v_skip" /* SKIP */) {
+ return true;
+ }
+ // for internal formatters to know that this is a Vue instance
+ if ( key === '__isVue') {
+ return true;
+ }
+ // data / props / ctx
+ // This getter gets called for every property access on the render context
+ // during render and is a major hotspot. The most expensive part of this
+ // is the multiple hasOwn() calls. It's much faster to do a simple property
+ // access on a plain object, so we use an accessCache object (with null
+ // prototype) to memoize what access type a key corresponds to.
+ let normalizedProps;
+ if (key[0] !== '$') {
+ const n = accessCache[key];
+ if (n !== undefined) {
+ switch (n) {
+ case 0 /* SETUP */:
+ return setupState[key];
+ case 1 /* DATA */:
+ return data[key];
+ case 3 /* CONTEXT */:
+ return ctx[key];
+ case 2 /* PROPS */:
+ return props[key];
+ // default: just fallthrough
+ }
+ }
+ else if (setupState !== EMPTY_OBJ && hasOwn(setupState, key)) {
+ accessCache[key] = 0 /* SETUP */;
+ return setupState[key];
+ }
+ else if (data !== EMPTY_OBJ && hasOwn(data, key)) {
+ accessCache[key] = 1 /* DATA */;
+ return data[key];
+ }
+ else if (
+ // only cache other properties when instance has declared (thus stable)
+ // props
+ (normalizedProps = instance.propsOptions[0]) &&
+ hasOwn(normalizedProps, key)) {
+ accessCache[key] = 2 /* PROPS */;
+ return props[key];
+ }
+ else if (ctx !== EMPTY_OBJ && hasOwn(ctx, key)) {
+ accessCache[key] = 3 /* CONTEXT */;
+ return ctx[key];
+ }
+ else if ( !isInBeforeCreate) {
+ accessCache[key] = 4 /* OTHER */;
+ }
+ }
+ const publicGetter = publicPropertiesMap[key];
+ let cssModule, globalProperties;
+ // public $xxx properties
+ if (publicGetter) {
+ if (key === '$attrs') {
+ track(instance, "get" /* GET */, key);
+ markAttrsAccessed();
+ }
+ return publicGetter(instance);
+ }
+ else if (
+ // css module (injected by vue-loader)
+ (cssModule = type.__cssModules) &&
+ (cssModule = cssModule[key])) {
+ return cssModule;
+ }
+ else if (ctx !== EMPTY_OBJ && hasOwn(ctx, key)) {
+ // user may set custom properties to `this` that start with `$`
+ accessCache[key] = 3 /* CONTEXT */;
+ return ctx[key];
+ }
+ else if (
+ // global properties
+ ((globalProperties = appContext.config.globalProperties),
+ hasOwn(globalProperties, key))) {
+ return globalProperties[key];
+ }
+ else if (
+ currentRenderingInstance &&
+ (!isString(key) ||
+ // #1091 avoid internal isRef/isVNode checks on component instance leading
+ // to infinite warning loop
+ key.indexOf('__v') !== 0)) {
+ if (data !== EMPTY_OBJ &&
+ (key[0] === '$' || key[0] === '_') &&
+ hasOwn(data, key)) {
+ warn(`Property ${JSON.stringify(key)} must be accessed via $data because it starts with a reserved ` +
+ `character ("$" or "_") and is not proxied on the render context.`);
+ }
+ else {
+ warn(`Property ${JSON.stringify(key)} was accessed during render ` +
+ `but is not defined on instance.`);
+ }
+ }
+ },
+ set({ _: instance }, key, value) {
+ const { data, setupState, ctx } = instance;
+ if (setupState !== EMPTY_OBJ && hasOwn(setupState, key)) {
+ setupState[key] = value;
+ }
+ else if (data !== EMPTY_OBJ && hasOwn(data, key)) {
+ data[key] = value;
+ }
+ else if (key in instance.props) {
+
+ warn(`Attempting to mutate prop "${key}". Props are readonly.`, instance);
+ return false;
+ }
+ if (key[0] === '$' && key.slice(1) in instance) {
+
+ warn(`Attempting to mutate public property "${key}". ` +
+ `Properties starting with $ are reserved and readonly.`, instance);
+ return false;
+ }
+ else {
+ if ( key in instance.appContext.config.globalProperties) {
+ Object.defineProperty(ctx, key, {
+ enumerable: true,
+ configurable: true,
+ value
+ });
+ }
+ else {
+ ctx[key] = value;
+ }
+ }
+ return true;
+ },
+ has({ _: { data, setupState, accessCache, ctx, appContext, propsOptions } }, key) {
+ let normalizedProps;
+ return (accessCache[key] !== undefined ||
+ (data !== EMPTY_OBJ && hasOwn(data, key)) ||
+ (setupState !== EMPTY_OBJ && hasOwn(setupState, key)) ||
+ ((normalizedProps = propsOptions[0]) && hasOwn(normalizedProps, key)) ||
+ hasOwn(ctx, key) ||
+ hasOwn(publicPropertiesMap, key) ||
+ hasOwn(appContext.config.globalProperties, key));
+ }
+ };
+ {
+ PublicInstanceProxyHandlers.ownKeys = (target) => {
+ warn(`Avoid app logic that relies on enumerating keys on a component instance. ` +
+ `The keys will be empty in production mode to avoid performance overhead.`);
+ return Reflect.ownKeys(target);
+ };
+ }
+ const RuntimeCompiledPublicInstanceProxyHandlers = extend({}, PublicInstanceProxyHandlers, {
+ get(target, key) {
+ // fast path for unscopables when using `with` block
+ if (key === Symbol.unscopables) {
+ return;
+ }
+ return PublicInstanceProxyHandlers.get(target, key, target);
+ },
+ has(_, key) {
+ const has = key[0] !== '_' && !isGloballyWhitelisted(key);
+ if ( !has && PublicInstanceProxyHandlers.has(_, key)) {
+ warn(`Property ${JSON.stringify(key)} should not start with _ which is a reserved prefix for Vue internals.`);
+ }
+ return has;
+ }
+ });
+ // In dev mode, the proxy target exposes the same properties as seen on `this`
+ // for easier console inspection. In prod mode it will be an empty object so
+ // these properties definitions can be skipped.
+ function createRenderContext(instance) {
+ const target = {};
+ // expose internal instance for proxy handlers
+ Object.defineProperty(target, `_`, {
+ configurable: true,
+ enumerable: false,
+ get: () => instance
+ });
+ // expose public properties
+ Object.keys(publicPropertiesMap).forEach(key => {
+ Object.defineProperty(target, key, {
+ configurable: true,
+ enumerable: false,
+ get: () => publicPropertiesMap[key](instance),
+ // intercepted by the proxy so no need for implementation,
+ // but needed to prevent set errors
+ set: NOOP
+ });
+ });
+ // expose global properties
+ const { globalProperties } = instance.appContext.config;
+ Object.keys(globalProperties).forEach(key => {
+ Object.defineProperty(target, key, {
+ configurable: true,
+ enumerable: false,
+ get: () => globalProperties[key],
+ set: NOOP
+ });
+ });
+ return target;
+ }
+ // dev only
+ function exposePropsOnRenderContext(instance) {
+ const { ctx, propsOptions: [propsOptions] } = instance;
+ if (propsOptions) {
+ Object.keys(propsOptions).forEach(key => {
+ Object.defineProperty(ctx, key, {
+ enumerable: true,
+ configurable: true,
+ get: () => instance.props[key],
+ set: NOOP
+ });
+ });
+ }
+ }
+ // dev only
+ function exposeSetupStateOnRenderContext(instance) {
+ const { ctx, setupState } = instance;
+ Object.keys(toRaw(setupState)).forEach(key => {
+ if (key[0] === '$' || key[0] === '_') {
+ warn(`setup() return property ${JSON.stringify(key)} should not start with "$" or "_" ` +
+ `which are reserved prefixes for Vue internals.`);
+ return;
+ }
+ Object.defineProperty(ctx, key, {
+ enumerable: true,
+ configurable: true,
+ get: () => setupState[key],
+ set: NOOP
+ });
+ });
+ }
+
+ const emptyAppContext = createAppContext();
+ let uid$2 = 0;
+ function createComponentInstance(vnode, parent, suspense) {
+ const type = vnode.type;
+ // inherit parent app context - or - if root, adopt from root vnode
+ const appContext = (parent ? parent.appContext : vnode.appContext) || emptyAppContext;
+ const instance = {
+ uid: uid$2++,
+ vnode,
+ type,
+ parent,
+ appContext,
+ root: null,
+ next: null,
+ subTree: null,
+ update: null,
+ render: null,
+ proxy: null,
+ exposed: null,
+ withProxy: null,
+ effects: null,
+ provides: parent ? parent.provides : Object.create(appContext.provides),
+ accessCache: null,
+ renderCache: [],
+ // local resovled assets
+ components: null,
+ directives: null,
+ // resolved props and emits options
+ propsOptions: normalizePropsOptions(type, appContext),
+ emitsOptions: normalizeEmitsOptions(type, appContext),
+ // emit
+ emit: null,
+ emitted: null,
+ // state
+ ctx: EMPTY_OBJ,
+ data: EMPTY_OBJ,
+ props: EMPTY_OBJ,
+ attrs: EMPTY_OBJ,
+ slots: EMPTY_OBJ,
+ refs: EMPTY_OBJ,
+ setupState: EMPTY_OBJ,
+ setupContext: null,
+ // suspense related
+ suspense,
+ suspenseId: suspense ? suspense.pendingId : 0,
+ asyncDep: null,
+ asyncResolved: false,
+ // lifecycle hooks
+ // not using enums here because it results in computed properties
+ isMounted: false,
+ isUnmounted: false,
+ isDeactivated: false,
+ bc: null,
+ c: null,
+ bm: null,
+ m: null,
+ bu: null,
+ u: null,
+ um: null,
+ bum: null,
+ da: null,
+ a: null,
+ rtg: null,
+ rtc: null,
+ ec: null
+ };
+ {
+ instance.ctx = createRenderContext(instance);
+ }
+ instance.root = parent ? parent.root : instance;
+ instance.emit = emit.bind(null, instance);
+ {
+ devtoolsComponentAdded(instance);
+ }
+ return instance;
+ }
+ let currentInstance = null;
+ const getCurrentInstance = () => currentInstance || currentRenderingInstance;
+ const setCurrentInstance = (instance) => {
+ currentInstance = instance;
+ };
+ const isBuiltInTag = /*#__PURE__*/ makeMap('slot,component');
+ function validateComponentName(name, config) {
+ const appIsNativeTag = config.isNativeTag || NO;
+ if (isBuiltInTag(name) || appIsNativeTag(name)) {
+ warn('Do not use built-in or reserved HTML elements as component id: ' + name);
+ }
+ }
+ let isInSSRComponentSetup = false;
+ function setupComponent(instance, isSSR = false) {
+ isInSSRComponentSetup = isSSR;
+ const { props, children, shapeFlag } = instance.vnode;
+ const isStateful = shapeFlag & 4 /* STATEFUL_COMPONENT */;
+ initProps(instance, props, isStateful, isSSR);
+ initSlots(instance, children);
+ const setupResult = isStateful
+ ? setupStatefulComponent(instance, isSSR)
+ : undefined;
+ isInSSRComponentSetup = false;
+ return setupResult;
+ }
+ function setupStatefulComponent(instance, isSSR) {
+ const Component = instance.type;
+ {
+ if (Component.name) {
+ validateComponentName(Component.name, instance.appContext.config);
+ }
+ if (Component.components) {
+ const names = Object.keys(Component.components);
+ for (let i = 0; i < names.length; i++) {
+ validateComponentName(names[i], instance.appContext.config);
+ }
+ }
+ if (Component.directives) {
+ const names = Object.keys(Component.directives);
+ for (let i = 0; i < names.length; i++) {
+ validateDirectiveName(names[i]);
+ }
+ }
+ }
+ // 0. create render proxy property access cache
+ instance.accessCache = Object.create(null);
+ // 1. create public instance / render proxy
+ // also mark it raw so it's never observed
+ instance.proxy = new Proxy(instance.ctx, PublicInstanceProxyHandlers);
+ {
+ exposePropsOnRenderContext(instance);
+ }
+ // 2. call setup()
+ const { setup } = Component;
+ if (setup) {
+ const setupContext = (instance.setupContext =
+ setup.length > 1 ? createSetupContext(instance) : null);
+ currentInstance = instance;
+ pauseTracking();
+ const setupResult = callWithErrorHandling(setup, instance, 0 /* SETUP_FUNCTION */, [ shallowReadonly(instance.props) , setupContext]);
+ resetTracking();
+ currentInstance = null;
+ if (isPromise(setupResult)) {
+ if (isSSR) {
+ // return the promise so server-renderer can wait on it
+ return setupResult.then((resolvedResult) => {
+ handleSetupResult(instance, resolvedResult);
+ });
+ }
+ else {
+ // async setup returned Promise.
+ // bail here and wait for re-entry.
+ instance.asyncDep = setupResult;
+ }
+ }
+ else {
+ handleSetupResult(instance, setupResult);
+ }
+ }
+ else {
+ finishComponentSetup(instance);
+ }
+ }
+ function handleSetupResult(instance, setupResult, isSSR) {
+ if (isFunction(setupResult)) {
+ // setup returned an inline render function
+ {
+ instance.render = setupResult;
+ }
+ }
+ else if (isObject(setupResult)) {
+ if ( isVNode(setupResult)) {
+ warn(`setup() should not return VNodes directly - ` +
+ `return a render function instead.`);
+ }
+ // setup returned bindings.
+ // assuming a render function compiled from template is present.
+ {
+ instance.devtoolsRawSetupState = setupResult;
+ }
+ instance.setupState = proxyRefs(setupResult);
+ {
+ exposeSetupStateOnRenderContext(instance);
+ }
+ }
+ else if ( setupResult !== undefined) {
+ warn(`setup() should return an object. Received: ${setupResult === null ? 'null' : typeof setupResult}`);
+ }
+ finishComponentSetup(instance);
+ }
+ let compile;
+ /**
+ * For runtime-dom to register the compiler.
+ * Note the exported method uses any to avoid d.ts relying on the compiler types.
+ */
+ function registerRuntimeCompiler(_compile) {
+ compile = _compile;
+ }
+ function finishComponentSetup(instance, isSSR) {
+ const Component = instance.type;
+ // template / render function normalization
+ if (!instance.render) {
+ // could be set from setup()
+ if (compile && Component.template && !Component.render) {
+ {
+ startMeasure(instance, `compile`);
+ }
+ Component.render = compile(Component.template, {
+ isCustomElement: instance.appContext.config.isCustomElement,
+ delimiters: Component.delimiters
+ });
+ {
+ endMeasure(instance, `compile`);
+ }
+ }
+ instance.render = (Component.render || NOOP);
+ // for runtime-compiled render functions using `with` blocks, the render
+ // proxy used needs a different `has` handler which is more performant and
+ // also only allows a whitelist of globals to fallthrough.
+ if (instance.render._rc) {
+ instance.withProxy = new Proxy(instance.ctx, RuntimeCompiledPublicInstanceProxyHandlers);
+ }
+ }
+ // support for 2.x options
+ {
+ currentInstance = instance;
+ pauseTracking();
+ applyOptions(instance, Component);
+ resetTracking();
+ currentInstance = null;
+ }
+ // warn missing template/render
+ if ( !Component.render && instance.render === NOOP) {
+ /* istanbul ignore if */
+ if (!compile && Component.template) {
+ warn(`Component provided template option but ` +
+ `runtime compilation is not supported in this build of Vue.` +
+ ( ` Use "vue.global.js" instead.`
+ ) /* should not happen */);
+ }
+ else {
+ warn(`Component is missing template or render function.`);
+ }
+ }
+ }
+ const attrHandlers = {
+ get: (target, key) => {
+ {
+ markAttrsAccessed();
+ }
+ return target[key];
+ },
+ set: () => {
+ warn(`setupContext.attrs is readonly.`);
+ return false;
+ },
+ deleteProperty: () => {
+ warn(`setupContext.attrs is readonly.`);
+ return false;
+ }
+ };
+ function createSetupContext(instance) {
+ const expose = exposed => {
+ if ( instance.exposed) {
+ warn(`expose() should be called only once per setup().`);
+ }
+ instance.exposed = proxyRefs(exposed);
+ };
+ {
+ // We use getters in dev in case libs like test-utils overwrite instance
+ // properties (overwrites should not be done in prod)
+ return Object.freeze({
+ get props() {
+ return instance.props;
+ },
+ get attrs() {
+ return new Proxy(instance.attrs, attrHandlers);
+ },
+ get slots() {
+ return shallowReadonly(instance.slots);
+ },
+ get emit() {
+ return (event, ...args) => instance.emit(event, ...args);
+ },
+ expose
+ });
+ }
+ }
+ // record effects created during a component's setup() so that they can be
+ // stopped when the component unmounts
+ function recordInstanceBoundEffect(effect, instance = currentInstance) {
+ if (instance) {
+ (instance.effects || (instance.effects = [])).push(effect);
+ }
+ }
+ const classifyRE = /(?:^|[-_])(\w)/g;
+ const classify = (str) => str.replace(classifyRE, c => c.toUpperCase()).replace(/[-_]/g, '');
+ function getComponentName(Component) {
+ return isFunction(Component)
+ ? Component.displayName || Component.name
+ : Component.name;
+ }
+ /* istanbul ignore next */
+ function formatComponentName(instance, Component, isRoot = false) {
+ let name = getComponentName(Component);
+ if (!name && Component.__file) {
+ const match = Component.__file.match(/([^/\\]+)\.\w+$/);
+ if (match) {
+ name = match[1];
+ }
+ }
+ if (!name && instance && instance.parent) {
+ // try to infer the name based on reverse resolution
+ const inferFromRegistry = (registry) => {
+ for (const key in registry) {
+ if (registry[key] === Component) {
+ return key;
+ }
+ }
+ };
+ name =
+ inferFromRegistry(instance.components ||
+ instance.parent.type.components) || inferFromRegistry(instance.appContext.components);
+ }
+ return name ? classify(name) : isRoot ? `App` : `Anonymous`;
+ }
+ function isClassComponent(value) {
+ return isFunction(value) && '__vccOpts' in value;
+ }
+
+ function computed$1(getterOrOptions) {
+ const c = computed(getterOrOptions);
+ recordInstanceBoundEffect(c.effect);
+ return c;
+ }
+
+ // implementation
+ function defineProps() {
+ {
+ warn(`defineProps() is a compiler-hint helper that is only usable inside ` +
+ `<script setup> of a single file component. Its arguments should be ` +
+ `compiled away and passing it at runtime has no effect.`);
+ }
+ return null;
+ }
+ // implementation
+ function defineEmit() {
+ {
+ warn(`defineEmit() is a compiler-hint helper that is only usable inside ` +
+ `<script setup> of a single file component. Its arguments should be ` +
+ `compiled away and passing it at runtime has no effect.`);
+ }
+ return null;
+ }
+ function useContext() {
+ const i = getCurrentInstance();
+ if ( !i) {
+ warn(`useContext() called without active instance.`);
+ }
+ return i.setupContext || (i.setupContext = createSetupContext(i));
+ }
+
+ // Actual implementation
+ function h(type, propsOrChildren, children) {
+ const l = arguments.length;
+ if (l === 2) {
+ if (isObject(propsOrChildren) && !isArray(propsOrChildren)) {
+ // single vnode without props
+ if (isVNode(propsOrChildren)) {
+ return createVNode(type, null, [propsOrChildren]);
+ }
+ // props without children
+ return createVNode(type, propsOrChildren);
+ }
+ else {
+ // omit props
+ return createVNode(type, null, propsOrChildren);
+ }
+ }
+ else {
+ if (l > 3) {
+ children = Array.prototype.slice.call(arguments, 2);
+ }
+ else if (l === 3 && isVNode(children)) {
+ children = [children];
+ }
+ return createVNode(type, propsOrChildren, children);
+ }
+ }
+
+ const ssrContextKey = Symbol( `ssrContext` );
+ const useSSRContext = () => {
+ {
+ warn(`useSsrContext() is not supported in the global build.`);
+ }
+ };
+
+ function initCustomFormatter() {
+ /* eslint-disable no-restricted-globals */
+ if ( typeof window === 'undefined') {
+ return;
+ }
+ const vueStyle = { style: 'color:#3ba776' };
+ const numberStyle = { style: 'color:#0b1bc9' };
+ const stringStyle = { style: 'color:#b62e24' };
+ const keywordStyle = { style: 'color:#9d288c' };
+ // custom formatter for Chrome
+ // https://www.mattzeunert.com/2016/02/19/custom-chrome-devtools-object-formatters.html
+ const formatter = {
+ header(obj) {
+ // TODO also format ComponentPublicInstance & ctx.slots/attrs in setup
+ if (!isObject(obj)) {
+ return null;
+ }
+ if (obj.__isVue) {
+ return ['div', vueStyle, `VueInstance`];
+ }
+ else if (isRef(obj)) {
+ return [
+ 'div',
+ {},
+ ['span', vueStyle, genRefFlag(obj)],
+ '<',
+ formatValue(obj.value),
+ `>`
+ ];
+ }
+ else if (isReactive(obj)) {
+ return [
+ 'div',
+ {},
+ ['span', vueStyle, 'Reactive'],
+ '<',
+ formatValue(obj),
+ `>${isReadonly(obj) ? ` (readonly)` : ``}`
+ ];
+ }
+ else if (isReadonly(obj)) {
+ return [
+ 'div',
+ {},
+ ['span', vueStyle, 'Readonly'],
+ '<',
+ formatValue(obj),
+ '>'
+ ];
+ }
+ return null;
+ },
+ hasBody(obj) {
+ return obj && obj.__isVue;
+ },
+ body(obj) {
+ if (obj && obj.__isVue) {
+ return [
+ 'div',
+ {},
+ ...formatInstance(obj.$)
+ ];
+ }
+ }
+ };
+ function formatInstance(instance) {
+ const blocks = [];
+ if (instance.type.props && instance.props) {
+ blocks.push(createInstanceBlock('props', toRaw(instance.props)));
+ }
+ if (instance.setupState !== EMPTY_OBJ) {
+ blocks.push(createInstanceBlock('setup', instance.setupState));
+ }
+ if (instance.data !== EMPTY_OBJ) {
+ blocks.push(createInstanceBlock('data', toRaw(instance.data)));
+ }
+ const computed = extractKeys(instance, 'computed');
+ if (computed) {
+ blocks.push(createInstanceBlock('computed', computed));
+ }
+ const injected = extractKeys(instance, 'inject');
+ if (injected) {
+ blocks.push(createInstanceBlock('injected', injected));
+ }
+ blocks.push([
+ 'div',
+ {},
+ [
+ 'span',
+ {
+ style: keywordStyle.style + ';opacity:0.66'
+ },
+ '$ (internal): '
+ ],
+ ['object', { object: instance }]
+ ]);
+ return blocks;
+ }
+ function createInstanceBlock(type, target) {
+ target = extend({}, target);
+ if (!Object.keys(target).length) {
+ return ['span', {}];
+ }
+ return [
+ 'div',
+ { style: 'line-height:1.25em;margin-bottom:0.6em' },
+ [
+ 'div',
+ {
+ style: 'color:#476582'
+ },
+ type
+ ],
+ [
+ 'div',
+ {
+ style: 'padding-left:1.25em'
+ },
+ ...Object.keys(target).map(key => {
+ return [
+ 'div',
+ {},
+ ['span', keywordStyle, key + ': '],
+ formatValue(target[key], false)
+ ];
+ })
+ ]
+ ];
+ }
+ function formatValue(v, asRaw = true) {
+ if (typeof v === 'number') {
+ return ['span', numberStyle, v];
+ }
+ else if (typeof v === 'string') {
+ return ['span', stringStyle, JSON.stringify(v)];
+ }
+ else if (typeof v === 'boolean') {
+ return ['span', keywordStyle, v];
+ }
+ else if (isObject(v)) {
+ return ['object', { object: asRaw ? toRaw(v) : v }];
+ }
+ else {
+ return ['span', stringStyle, String(v)];
+ }
+ }
+ function extractKeys(instance, type) {
+ const Comp = instance.type;
+ if (isFunction(Comp)) {
+ return;
+ }
+ const extracted = {};
+ for (const key in instance.ctx) {
+ if (isKeyOfType(Comp, key, type)) {
+ extracted[key] = instance.ctx[key];
+ }
+ }
+ return extracted;
+ }
+ function isKeyOfType(Comp, key, type) {
+ const opts = Comp[type];
+ if ((isArray(opts) && opts.includes(key)) ||
+ (isObject(opts) && key in opts)) {
+ return true;
+ }
+ if (Comp.extends && isKeyOfType(Comp.extends, key, type)) {
+ return true;
+ }
+ if (Comp.mixins && Comp.mixins.some(m => isKeyOfType(m, key, type))) {
+ return true;
+ }
+ }
+ function genRefFlag(v) {
+ if (v._shallow) {
+ return `ShallowRef`;
+ }
+ if (v.effect) {
+ return `ComputedRef`;
+ }
+ return `Ref`;
+ }
+ if (window.devtoolsFormatters) {
+ window.devtoolsFormatters.push(formatter);
+ }
+ else {
+ window.devtoolsFormatters = [formatter];
+ }
+ }
+
+ /**
+ * Actual implementation
+ */
+ function renderList(source, renderItem) {
+ let ret;
+ if (isArray(source) || isString(source)) {
+ ret = new Array(source.length);
+ for (let i = 0, l = source.length; i < l; i++) {
+ ret[i] = renderItem(source[i], i);
+ }
+ }
+ else if (typeof source === 'number') {
+ if ( !Number.isInteger(source)) {
+ warn(`The v-for range expect an integer value but got ${source}.`);
+ return [];
+ }
+ ret = new Array(source);
+ for (let i = 0; i < source; i++) {
+ ret[i] = renderItem(i + 1, i);
+ }
+ }
+ else if (isObject(source)) {
+ if (source[Symbol.iterator]) {
+ ret = Array.from(source, renderItem);
+ }
+ else {
+ const keys = Object.keys(source);
+ ret = new Array(keys.length);
+ for (let i = 0, l = keys.length; i < l; i++) {
+ const key = keys[i];
+ ret[i] = renderItem(source[key], key, i);
+ }
+ }
+ }
+ else {
+ ret = [];
+ }
+ return ret;
+ }
+
+ /**
+ * For prefixing keys in v-on="obj" with "on"
+ * @private
+ */
+ function toHandlers(obj) {
+ const ret = {};
+ if ( !isObject(obj)) {
+ warn(`v-on with no argument expects an object value.`);
+ return ret;
+ }
+ for (const key in obj) {
+ ret[toHandlerKey(key)] = obj[key];
+ }
+ return ret;
+ }
+
+ /**
+ * Compiler runtime helper for creating dynamic slots object
+ * @private
+ */
+ function createSlots(slots, dynamicSlots) {
+ for (let i = 0; i < dynamicSlots.length; i++) {
+ const slot = dynamicSlots[i];
+ // array of dynamic slot generated by <template v-for="..." #[...]>
+ if (isArray(slot)) {
+ for (let j = 0; j < slot.length; j++) {
+ slots[slot[j].name] = slot[j].fn;
+ }
+ }
+ else if (slot) {
+ // conditional single slot generated by <template v-if="..." #foo>
+ slots[slot.name] = slot.fn;
+ }
+ }
+ return slots;
+ }
+
+ // Core API ------------------------------------------------------------------
+ const version = "3.0.5";
+ /**
+ * SSR utils for \@vue/server-renderer. Only exposed in cjs builds.
+ * @internal
+ */
+ const ssrUtils = ( null);
+
+ const svgNS = 'http://www.w3.org/2000/svg';
+ const doc = (typeof document !== 'undefined' ? document : null);
+ let tempContainer;
+ let tempSVGContainer;
+ const nodeOps = {
+ insert: (child, parent, anchor) => {
+ parent.insertBefore(child, anchor || null);
+ },
+ remove: child => {
+ const parent = child.parentNode;
+ if (parent) {
+ parent.removeChild(child);
+ }
+ },
+ createElement: (tag, isSVG, is) => isSVG
+ ? doc.createElementNS(svgNS, tag)
+ : doc.createElement(tag, is ? { is } : undefined),
+ createText: text => doc.createTextNode(text),
+ createComment: text => doc.createComment(text),
+ setText: (node, text) => {
+ node.nodeValue = text;
+ },
+ setElementText: (el, text) => {
+ el.textContent = text;
+ },
+ parentNode: node => node.parentNode,
+ nextSibling: node => node.nextSibling,
+ querySelector: selector => doc.querySelector(selector),
+ setScopeId(el, id) {
+ el.setAttribute(id, '');
+ },
+ cloneNode(el) {
+ return el.cloneNode(true);
+ },
+ // __UNSAFE__
+ // Reason: innerHTML.
+ // Static content here can only come from compiled templates.
+ // As long as the user only uses trusted templates, this is safe.
+ insertStaticContent(content, parent, anchor, isSVG) {
+ const temp = isSVG
+ ? tempSVGContainer ||
+ (tempSVGContainer = doc.createElementNS(svgNS, 'svg'))
+ : tempContainer || (tempContainer = doc.createElement('div'));
+ temp.innerHTML = content;
+ const first = temp.firstChild;
+ let node = first;
+ let last = node;
+ while (node) {
+ last = node;
+ nodeOps.insert(node, parent, anchor);
+ node = temp.firstChild;
+ }
+ return [first, last];
+ }
+ };
+
+ // compiler should normalize class + :class bindings on the same element
+ // into a single binding ['staticClass', dynamic]
+ function patchClass(el, value, isSVG) {
+ if (value == null) {
+ value = '';
+ }
+ if (isSVG) {
+ el.setAttribute('class', value);
+ }
+ else {
+ // directly setting className should be faster than setAttribute in theory
+ // if this is an element during a transition, take the temporary transition
+ // classes into account.
+ const transitionClasses = el._vtc;
+ if (transitionClasses) {
+ value = (value
+ ? [value, ...transitionClasses]
+ : [...transitionClasses]).join(' ');
+ }
+ el.className = value;
+ }
+ }
+
+ function patchStyle(el, prev, next) {
+ const style = el.style;
+ if (!next) {
+ el.removeAttribute('style');
+ }
+ else if (isString(next)) {
+ if (prev !== next) {
+ style.cssText = next;
+ }
+ }
+ else {
+ for (const key in next) {
+ setStyle(style, key, next[key]);
+ }
+ if (prev && !isString(prev)) {
+ for (const key in prev) {
+ if (next[key] == null) {
+ setStyle(style, key, '');
+ }
+ }
+ }
+ }
+ }
+ const importantRE = /\s*!important$/;
+ function setStyle(style, name, val) {
+ if (isArray(val)) {
+ val.forEach(v => setStyle(style, name, v));
+ }
+ else {
+ if (name.startsWith('--')) {
+ // custom property definition
+ style.setProperty(name, val);
+ }
+ else {
+ const prefixed = autoPrefix(style, name);
+ if (importantRE.test(val)) {
+ // !important
+ style.setProperty(hyphenate(prefixed), val.replace(importantRE, ''), 'important');
+ }
+ else {
+ style[prefixed] = val;
+ }
+ }
+ }
+ }
+ const prefixes = ['Webkit', 'Moz', 'ms'];
+ const prefixCache = {};
+ function autoPrefix(style, rawName) {
+ const cached = prefixCache[rawName];
+ if (cached) {
+ return cached;
+ }
+ let name = camelize(rawName);
+ if (name !== 'filter' && name in style) {
+ return (prefixCache[rawName] = name);
+ }
+ name = capitalize(name);
+ for (let i = 0; i < prefixes.length; i++) {
+ const prefixed = prefixes[i] + name;
+ if (prefixed in style) {
+ return (prefixCache[rawName] = prefixed);
+ }
+ }
+ return rawName;
+ }
+
+ const xlinkNS = 'http://www.w3.org/1999/xlink';
+ function patchAttr(el, key, value, isSVG) {
+ if (isSVG && key.startsWith('xlink:')) {
+ if (value == null) {
+ el.removeAttributeNS(xlinkNS, key.slice(6, key.length));
+ }
+ else {
+ el.setAttributeNS(xlinkNS, key, value);
+ }
+ }
+ else {
+ // note we are only checking boolean attributes that don't have a
+ // corresponding dom prop of the same name here.
+ const isBoolean = isSpecialBooleanAttr(key);
+ if (value == null || (isBoolean && value === false)) {
+ el.removeAttribute(key);
+ }
+ else {
+ el.setAttribute(key, isBoolean ? '' : value);
+ }
+ }
+ }
+
+ // __UNSAFE__
+ // functions. The user is responsible for using them with only trusted content.
+ function patchDOMProp(el, key, value,
+ // the following args are passed only due to potential innerHTML/textContent
+ // overriding existing VNodes, in which case the old tree must be properly
+ // unmounted.
+ prevChildren, parentComponent, parentSuspense, unmountChildren) {
+ if (key === 'innerHTML' || key === 'textContent') {
+ if (prevChildren) {
+ unmountChildren(prevChildren, parentComponent, parentSuspense);
+ }
+ el[key] = value == null ? '' : value;
+ return;
+ }
+ if (key === 'value' && el.tagName !== 'PROGRESS') {
+ // store value as _value as well since
+ // non-string values will be stringified.
+ el._value = value;
+ const newValue = value == null ? '' : value;
+ if (el.value !== newValue) {
+ el.value = newValue;
+ }
+ return;
+ }
+ if (value === '' || value == null) {
+ const type = typeof el[key];
+ if (value === '' && type === 'boolean') {
+ // e.g. <select multiple> compiles to { multiple: '' }
+ el[key] = true;
+ return;
+ }
+ else if (value == null && type === 'string') {
+ // e.g. <div :id="null">
+ el[key] = '';
+ el.removeAttribute(key);
+ return;
+ }
+ else if (type === 'number') {
+ // e.g. <img :width="null">
+ el[key] = 0;
+ el.removeAttribute(key);
+ return;
+ }
+ }
+ // some properties perform value validation and throw
+ try {
+ el[key] = value;
+ }
+ catch (e) {
+ {
+ warn(`Failed setting prop "${key}" on <${el.tagName.toLowerCase()}>: ` +
+ `value ${value} is invalid.`, e);
+ }
+ }
+ }
+
+ // Async edge case fix requires storing an event listener's attach timestamp.
+ let _getNow = Date.now;
+ // Determine what event timestamp the browser is using. Annoyingly, the
+ // timestamp can either be hi-res (relative to page load) or low-res
+ // (relative to UNIX epoch), so in order to compare time we have to use the
+ // same timestamp type when saving the flush timestamp.
+ if (typeof document !== 'undefined' &&
+ _getNow() > document.createEvent('Event').timeStamp) {
+ // if the low-res timestamp which is bigger than the event timestamp
+ // (which is evaluated AFTER) it means the event is using a hi-res timestamp,
+ // and we need to use the hi-res version for event listeners as well.
+ _getNow = () => performance.now();
+ }
+ // To avoid the overhead of repeatedly calling performance.now(), we cache
+ // and use the same timestamp for all event listeners attached in the same tick.
+ let cachedNow = 0;
+ const p = Promise.resolve();
+ const reset = () => {
+ cachedNow = 0;
+ };
+ const getNow = () => cachedNow || (p.then(reset), (cachedNow = _getNow()));
+ function addEventListener(el, event, handler, options) {
+ el.addEventListener(event, handler, options);
+ }
+ function removeEventListener(el, event, handler, options) {
+ el.removeEventListener(event, handler, options);
+ }
+ function patchEvent(el, rawName, prevValue, nextValue, instance = null) {
+ // vei = vue event invokers
+ const invokers = el._vei || (el._vei = {});
+ const existingInvoker = invokers[rawName];
+ if (nextValue && existingInvoker) {
+ // patch
+ existingInvoker.value = nextValue;
+ }
+ else {
+ const [name, options] = parseName(rawName);
+ if (nextValue) {
+ // add
+ const invoker = (invokers[rawName] = createInvoker(nextValue, instance));
+ addEventListener(el, name, invoker, options);
+ }
+ else if (existingInvoker) {
+ // remove
+ removeEventListener(el, name, existingInvoker, options);
+ invokers[rawName] = undefined;
+ }
+ }
+ }
+ const optionsModifierRE = /(?:Once|Passive|Capture)$/;
+ function parseName(name) {
+ let options;
+ if (optionsModifierRE.test(name)) {
+ options = {};
+ let m;
+ while ((m = name.match(optionsModifierRE))) {
+ name = name.slice(0, name.length - m[0].length);
+ options[m[0].toLowerCase()] = true;
+ }
+ }
+ return [name.slice(2).toLowerCase(), options];
+ }
+ function createInvoker(initialValue, instance) {
+ const invoker = (e) => {
+ // async edge case #6566: inner click event triggers patch, event handler
+ // attached to outer element during patch, and triggered again. This
+ // happens because browsers fire microtask ticks between event propagation.
+ // the solution is simple: we save the timestamp when a handler is attached,
+ // and the handler would only fire if the event passed to it was fired
+ // AFTER it was attached.
+ const timeStamp = e.timeStamp || _getNow();
+ if (timeStamp >= invoker.attached - 1) {
+ callWithAsyncErrorHandling(patchStopImmediatePropagation(e, invoker.value), instance, 5 /* NATIVE_EVENT_HANDLER */, [e]);
+ }
+ };
+ invoker.value = initialValue;
+ invoker.attached = getNow();
+ return invoker;
+ }
+ function patchStopImmediatePropagation(e, value) {
+ if (isArray(value)) {
+ const originalStop = e.stopImmediatePropagation;
+ e.stopImmediatePropagation = () => {
+ originalStop.call(e);
+ e._stopped = true;
+ };
+ return value.map(fn => (e) => !e._stopped && fn(e));
+ }
+ else {
+ return value;
+ }
+ }
+
+ const nativeOnRE = /^on[a-z]/;
+ const forcePatchProp = (_, key) => key === 'value';
+ const patchProp = (el, key, prevValue, nextValue, isSVG = false, prevChildren, parentComponent, parentSuspense, unmountChildren) => {
+ switch (key) {
+ // special
+ case 'class':
+ patchClass(el, nextValue, isSVG);
+ break;
+ case 'style':
+ patchStyle(el, prevValue, nextValue);
+ break;
+ default:
+ if (isOn(key)) {
+ // ignore v-model listeners
+ if (!isModelListener(key)) {
+ patchEvent(el, key, prevValue, nextValue, parentComponent);
+ }
+ }
+ else if (shouldSetAsProp(el, key, nextValue, isSVG)) {
+ patchDOMProp(el, key, nextValue, prevChildren, parentComponent, parentSuspense, unmountChildren);
+ }
+ else {
+ // special case for <input v-model type="checkbox"> with
+ // :true-value & :false-value
+ // store value as dom properties since non-string values will be
+ // stringified.
+ if (key === 'true-value') {
+ el._trueValue = nextValue;
+ }
+ else if (key === 'false-value') {
+ el._falseValue = nextValue;
+ }
+ patchAttr(el, key, nextValue, isSVG);
+ }
+ break;
+ }
+ };
+ function shouldSetAsProp(el, key, value, isSVG) {
+ if (isSVG) {
+ // most keys must be set as attribute on svg elements to work
+ // ...except innerHTML
+ if (key === 'innerHTML') {
+ return true;
+ }
+ // or native onclick with function values
+ if (key in el && nativeOnRE.test(key) && isFunction(value)) {
+ return true;
+ }
+ return false;
+ }
+ // spellcheck and draggable are numerated attrs, however their
+ // corresponding DOM properties are actually booleans - this leads to
+ // setting it with a string "false" value leading it to be coerced to
+ // `true`, so we need to always treat them as attributes.
+ // Note that `contentEditable` doesn't have this problem: its DOM
+ // property is also enumerated string values.
+ if (key === 'spellcheck' || key === 'draggable') {
+ return false;
+ }
+ // #1787 form as an attribute must be a string, while it accepts an Element as
+ // a prop
+ if (key === 'form' && typeof value === 'string') {
+ return false;
+ }
+ // #1526 <input list> must be set as attribute
+ if (key === 'list' && el.tagName === 'INPUT') {
+ return false;
+ }
+ // native onclick with string value, must be set as attribute
+ if (nativeOnRE.test(key) && isString(value)) {
+ return false;
+ }
+ return key in el;
+ }
+
+ function useCssModule(name = '$style') {
+ /* istanbul ignore else */
+ {
+ {
+ warn(`useCssModule() is not supported in the global build.`);
+ }
+ return EMPTY_OBJ;
+ }
+ }
+
+ /**
+ * Runtime helper for SFC's CSS variable injection feature.
+ * @private
+ */
+ function useCssVars(getter) {
+ const instance = getCurrentInstance();
+ /* istanbul ignore next */
+ if (!instance) {
+
+ warn(`useCssVars is called without current active component instance.`);
+ return;
+ }
+ const setVars = () => setVarsOnVNode(instance.subTree, getter(instance.proxy));
+ onMounted(() => watchEffect(setVars, { flush: 'post' }));
+ onUpdated(setVars);
+ }
+ function setVarsOnVNode(vnode, vars) {
+ if ( vnode.shapeFlag & 128 /* SUSPENSE */) {
+ const suspense = vnode.suspense;
+ vnode = suspense.activeBranch;
+ if (suspense.pendingBranch && !suspense.isHydrating) {
+ suspense.effects.push(() => {
+ setVarsOnVNode(suspense.activeBranch, vars);
+ });
+ }
+ }
+ // drill down HOCs until it's a non-component vnode
+ while (vnode.component) {
+ vnode = vnode.component.subTree;
+ }
+ if (vnode.shapeFlag & 1 /* ELEMENT */ && vnode.el) {
+ const style = vnode.el.style;
+ for (const key in vars) {
+ style.setProperty(`--${key}`, vars[key]);
+ }
+ }
+ else if (vnode.type === Fragment) {
+ vnode.children.forEach(c => setVarsOnVNode(c, vars));
+ }
+ }
+
+ const TRANSITION = 'transition';
+ const ANIMATION = 'animation';
+ // DOM Transition is a higher-order-component based on the platform-agnostic
+ // base Transition component, with DOM-specific logic.
+ const Transition = (props, { slots }) => h(BaseTransition, resolveTransitionProps(props), slots);
+ Transition.displayName = 'Transition';
+ const DOMTransitionPropsValidators = {
+ name: String,
+ type: String,
+ css: {
+ type: Boolean,
+ default: true
+ },
+ duration: [String, Number, Object],
+ enterFromClass: String,
+ enterActiveClass: String,
+ enterToClass: String,
+ appearFromClass: String,
+ appearActiveClass: String,
+ appearToClass: String,
+ leaveFromClass: String,
+ leaveActiveClass: String,
+ leaveToClass: String
+ };
+ const TransitionPropsValidators = (Transition.props = /*#__PURE__*/ extend({}, BaseTransition.props, DOMTransitionPropsValidators));
+ function resolveTransitionProps(rawProps) {
+ let { name = 'v', type, css = true, duration, enterFromClass = `${name}-enter-from`, enterActiveClass = `${name}-enter-active`, enterToClass = `${name}-enter-to`, appearFromClass = enterFromClass, appearActiveClass = enterActiveClass, appearToClass = enterToClass, leaveFromClass = `${name}-leave-from`, leaveActiveClass = `${name}-leave-active`, leaveToClass = `${name}-leave-to` } = rawProps;
+ const baseProps = {};
+ for (const key in rawProps) {
+ if (!(key in DOMTransitionPropsValidators)) {
+ baseProps[key] = rawProps[key];
+ }
+ }
+ if (!css) {
+ return baseProps;
+ }
+ const durations = normalizeDuration(duration);
+ const enterDuration = durations && durations[0];
+ const leaveDuration = durations && durations[1];
+ const { onBeforeEnter, onEnter, onEnterCancelled, onLeave, onLeaveCancelled, onBeforeAppear = onBeforeEnter, onAppear = onEnter, onAppearCancelled = onEnterCancelled } = baseProps;
+ const finishEnter = (el, isAppear, done) => {
+ removeTransitionClass(el, isAppear ? appearToClass : enterToClass);
+ removeTransitionClass(el, isAppear ? appearActiveClass : enterActiveClass);
+ done && done();
+ };
+ const finishLeave = (el, done) => {
+ removeTransitionClass(el, leaveToClass);
+ removeTransitionClass(el, leaveActiveClass);
+ done && done();
+ };
+ const makeEnterHook = (isAppear) => {
+ return (el, done) => {
+ const hook = isAppear ? onAppear : onEnter;
+ const resolve = () => finishEnter(el, isAppear, done);
+ hook && hook(el, resolve);
+ nextFrame(() => {
+ removeTransitionClass(el, isAppear ? appearFromClass : enterFromClass);
+ addTransitionClass(el, isAppear ? appearToClass : enterToClass);
+ if (!(hook && hook.length > 1)) {
+ whenTransitionEnds(el, type, enterDuration, resolve);
+ }
+ });
+ };
+ };
+ return extend(baseProps, {
+ onBeforeEnter(el) {
+ onBeforeEnter && onBeforeEnter(el);
+ addTransitionClass(el, enterFromClass);
+ addTransitionClass(el, enterActiveClass);
+ },
+ onBeforeAppear(el) {
+ onBeforeAppear && onBeforeAppear(el);
+ addTransitionClass(el, appearFromClass);
+ addTransitionClass(el, appearActiveClass);
+ },
+ onEnter: makeEnterHook(false),
+ onAppear: makeEnterHook(true),
+ onLeave(el, done) {
+ const resolve = () => finishLeave(el, done);
+ addTransitionClass(el, leaveFromClass);
+ // force reflow so *-leave-from classes immediately take effect (#2593)
+ forceReflow();
+ addTransitionClass(el, leaveActiveClass);
+ nextFrame(() => {
+ removeTransitionClass(el, leaveFromClass);
+ addTransitionClass(el, leaveToClass);
+ if (!(onLeave && onLeave.length > 1)) {
+ whenTransitionEnds(el, type, leaveDuration, resolve);
+ }
+ });
+ onLeave && onLeave(el, resolve);
+ },
+ onEnterCancelled(el) {
+ finishEnter(el, false);
+ onEnterCancelled && onEnterCancelled(el);
+ },
+ onAppearCancelled(el) {
+ finishEnter(el, true);
+ onAppearCancelled && onAppearCancelled(el);
+ },
+ onLeaveCancelled(el) {
+ finishLeave(el);
+ onLeaveCancelled && onLeaveCancelled(el);
+ }
+ });
+ }
+ function normalizeDuration(duration) {
+ if (duration == null) {
+ return null;
+ }
+ else if (isObject(duration)) {
+ return [NumberOf(duration.enter), NumberOf(duration.leave)];
+ }
+ else {
+ const n = NumberOf(duration);
+ return [n, n];
+ }
+ }
+ function NumberOf(val) {
+ const res = toNumber(val);
+ validateDuration(res);
+ return res;
+ }
+ function validateDuration(val) {
+ if (typeof val !== 'number') {
+ warn(`<transition> explicit duration is not a valid number - ` +
+ `got ${JSON.stringify(val)}.`);
+ }
+ else if (isNaN(val)) {
+ warn(`<transition> explicit duration is NaN - ` +
+ 'the duration expression might be incorrect.');
+ }
+ }
+ function addTransitionClass(el, cls) {
+ cls.split(/\s+/).forEach(c => c && el.classList.add(c));
+ (el._vtc ||
+ (el._vtc = new Set())).add(cls);
+ }
+ function removeTransitionClass(el, cls) {
+ cls.split(/\s+/).forEach(c => c && el.classList.remove(c));
+ const { _vtc } = el;
+ if (_vtc) {
+ _vtc.delete(cls);
+ if (!_vtc.size) {
+ el._vtc = undefined;
+ }
+ }
+ }
+ function nextFrame(cb) {
+ requestAnimationFrame(() => {
+ requestAnimationFrame(cb);
+ });
+ }
+ let endId = 0;
+ function whenTransitionEnds(el, expectedType, explicitTimeout, resolve) {
+ const id = (el._endId = ++endId);
+ const resolveIfNotStale = () => {
+ if (id === el._endId) {
+ resolve();
+ }
+ };
+ if (explicitTimeout) {
+ return setTimeout(resolveIfNotStale, explicitTimeout);
+ }
+ const { type, timeout, propCount } = getTransitionInfo(el, expectedType);
+ if (!type) {
+ return resolve();
+ }
+ const endEvent = type + 'end';
+ let ended = 0;
+ const end = () => {
+ el.removeEventListener(endEvent, onEnd);
+ resolveIfNotStale();
+ };
+ const onEnd = (e) => {
+ if (e.target === el && ++ended >= propCount) {
+ end();
+ }
+ };
+ setTimeout(() => {
+ if (ended < propCount) {
+ end();
+ }
+ }, timeout + 1);
+ el.addEventListener(endEvent, onEnd);
+ }
+ function getTransitionInfo(el, expectedType) {
+ const styles = window.getComputedStyle(el);
+ // JSDOM may return undefined for transition properties
+ const getStyleProperties = (key) => (styles[key] || '').split(', ');
+ const transitionDelays = getStyleProperties(TRANSITION + 'Delay');
+ const transitionDurations = getStyleProperties(TRANSITION + 'Duration');
+ const transitionTimeout = getTimeout(transitionDelays, transitionDurations);
+ const animationDelays = getStyleProperties(ANIMATION + 'Delay');
+ const animationDurations = getStyleProperties(ANIMATION + 'Duration');
+ const animationTimeout = getTimeout(animationDelays, animationDurations);
+ let type = null;
+ let timeout = 0;
+ let propCount = 0;
+ /* istanbul ignore if */
+ if (expectedType === TRANSITION) {
+ if (transitionTimeout > 0) {
+ type = TRANSITION;
+ timeout = transitionTimeout;
+ propCount = transitionDurations.length;
+ }
+ }
+ else if (expectedType === ANIMATION) {
+ if (animationTimeout > 0) {
+ type = ANIMATION;
+ timeout = animationTimeout;
+ propCount = animationDurations.length;
+ }
+ }
+ else {
+ timeout = Math.max(transitionTimeout, animationTimeout);
+ type =
+ timeout > 0
+ ? transitionTimeout > animationTimeout
+ ? TRANSITION
+ : ANIMATION
+ : null;
+ propCount = type
+ ? type === TRANSITION
+ ? transitionDurations.length
+ : animationDurations.length
+ : 0;
+ }
+ const hasTransform = type === TRANSITION &&
+ /\b(transform|all)(,|$)/.test(styles[TRANSITION + 'Property']);
+ return {
+ type,
+ timeout,
+ propCount,
+ hasTransform
+ };
+ }
+ function getTimeout(delays, durations) {
+ while (delays.length < durations.length) {
+ delays = delays.concat(delays);
+ }
+ return Math.max(...durations.map((d, i) => toMs(d) + toMs(delays[i])));
+ }
+ // Old versions of Chromium (below 61.0.3163.100) formats floating pointer
+ // numbers in a locale-dependent way, using a comma instead of a dot.
+ // If comma is not replaced with a dot, the input will be rounded down
+ // (i.e. acting as a floor function) causing unexpected behaviors
+ function toMs(s) {
+ return Number(s.slice(0, -1).replace(',', '.')) * 1000;
+ }
+ // synchronously force layout to put elements into a certain state
+ function forceReflow() {
+ return document.body.offsetHeight;
+ }
+
+ const positionMap = new WeakMap();
+ const newPositionMap = new WeakMap();
+ const TransitionGroupImpl = {
+ name: 'TransitionGroup',
+ props: /*#__PURE__*/ extend({}, TransitionPropsValidators, {
+ tag: String,
+ moveClass: String
+ }),
+ setup(props, { slots }) {
+ const instance = getCurrentInstance();
+ const state = useTransitionState();
+ let prevChildren;
+ let children;
+ onUpdated(() => {
+ // children is guaranteed to exist after initial render
+ if (!prevChildren.length) {
+ return;
+ }
+ const moveClass = props.moveClass || `${props.name || 'v'}-move`;
+ if (!hasCSSTransform(prevChildren[0].el, instance.vnode.el, moveClass)) {
+ return;
+ }
+ // we divide the work into three loops to avoid mixing DOM reads and writes
+ // in each iteration - which helps prevent layout thrashing.
+ prevChildren.forEach(callPendingCbs);
+ prevChildren.forEach(recordPosition);
+ const movedChildren = prevChildren.filter(applyTranslation);
+ // force reflow to put everything in position
+ forceReflow();
+ movedChildren.forEach(c => {
+ const el = c.el;
+ const style = el.style;
+ addTransitionClass(el, moveClass);
+ style.transform = style.webkitTransform = style.transitionDuration = '';
+ const cb = (el._moveCb = (e) => {
+ if (e && e.target !== el) {
+ return;
+ }
+ if (!e || /transform$/.test(e.propertyName)) {
+ el.removeEventListener('transitionend', cb);
+ el._moveCb = null;
+ removeTransitionClass(el, moveClass);
+ }
+ });
+ el.addEventListener('transitionend', cb);
+ });
+ });
+ return () => {
+ const rawProps = toRaw(props);
+ const cssTransitionProps = resolveTransitionProps(rawProps);
+ const tag = rawProps.tag || Fragment;
+ prevChildren = children;
+ children = slots.default ? getTransitionRawChildren(slots.default()) : [];
+ for (let i = 0; i < children.length; i++) {
+ const child = children[i];
+ if (child.key != null) {
+ setTransitionHooks(child, resolveTransitionHooks(child, cssTransitionProps, state, instance));
+ }
+ else {
+ warn(`<TransitionGroup> children must be keyed.`);
+ }
+ }
+ if (prevChildren) {
+ for (let i = 0; i < prevChildren.length; i++) {
+ const child = prevChildren[i];
+ setTransitionHooks(child, resolveTransitionHooks(child, cssTransitionProps, state, instance));
+ positionMap.set(child, child.el.getBoundingClientRect());
+ }
+ }
+ return createVNode(tag, null, children);
+ };
+ }
+ };
+ const TransitionGroup = TransitionGroupImpl;
+ function callPendingCbs(c) {
+ const el = c.el;
+ if (el._moveCb) {
+ el._moveCb();
+ }
+ if (el._enterCb) {
+ el._enterCb();
+ }
+ }
+ function recordPosition(c) {
+ newPositionMap.set(c, c.el.getBoundingClientRect());
+ }
+ function applyTranslation(c) {
+ const oldPos = positionMap.get(c);
+ const newPos = newPositionMap.get(c);
+ const dx = oldPos.left - newPos.left;
+ const dy = oldPos.top - newPos.top;
+ if (dx || dy) {
+ const s = c.el.style;
+ s.transform = s.webkitTransform = `translate(${dx}px,${dy}px)`;
+ s.transitionDuration = '0s';
+ return c;
+ }
+ }
+ function hasCSSTransform(el, root, moveClass) {
+ // Detect whether an element with the move class applied has
+ // CSS transitions. Since the element may be inside an entering
+ // transition at this very moment, we make a clone of it and remove
+ // all other transition classes applied to ensure only the move class
+ // is applied.
+ const clone = el.cloneNode();
+ if (el._vtc) {
+ el._vtc.forEach(cls => {
+ cls.split(/\s+/).forEach(c => c && clone.classList.remove(c));
+ });
+ }
+ moveClass.split(/\s+/).forEach(c => c && clone.classList.add(c));
+ clone.style.display = 'none';
+ const container = (root.nodeType === 1
+ ? root
+ : root.parentNode);
+ container.appendChild(clone);
+ const { hasTransform } = getTransitionInfo(clone);
+ container.removeChild(clone);
+ return hasTransform;
+ }
+
+ const getModelAssigner = (vnode) => {
+ const fn = vnode.props['onUpdate:modelValue'];
+ return isArray(fn) ? value => invokeArrayFns(fn, value) : fn;
+ };
+ function onCompositionStart(e) {
+ e.target.composing = true;
+ }
+ function onCompositionEnd(e) {
+ const target = e.target;
+ if (target.composing) {
+ target.composing = false;
+ trigger$1(target, 'input');
+ }
+ }
+ function trigger$1(el, type) {
+ const e = document.createEvent('HTMLEvents');
+ e.initEvent(type, true, true);
+ el.dispatchEvent(e);
+ }
+ // We are exporting the v-model runtime directly as vnode hooks so that it can
+ // be tree-shaken in case v-model is never used.
+ const vModelText = {
+ created(el, { modifiers: { lazy, trim, number } }, vnode) {
+ el._assign = getModelAssigner(vnode);
+ const castToNumber = number || el.type === 'number';
+ addEventListener(el, lazy ? 'change' : 'input', e => {
+ if (e.target.composing)
+ return;
+ let domValue = el.value;
+ if (trim) {
+ domValue = domValue.trim();
+ }
+ else if (castToNumber) {
+ domValue = toNumber(domValue);
+ }
+ el._assign(domValue);
+ });
+ if (trim) {
+ addEventListener(el, 'change', () => {
+ el.value = el.value.trim();
+ });
+ }
+ if (!lazy) {
+ addEventListener(el, 'compositionstart', onCompositionStart);
+ addEventListener(el, 'compositionend', onCompositionEnd);
+ // Safari < 10.2 & UIWebView doesn't fire compositionend when
+ // switching focus before confirming composition choice
+ // this also fixes the issue where some browsers e.g. iOS Chrome
+ // fires "change" instead of "input" on autocomplete.
+ addEventListener(el, 'change', onCompositionEnd);
+ }
+ },
+ // set value on mounted so it's after min/max for type="range"
+ mounted(el, { value }) {
+ el.value = value == null ? '' : value;
+ },
+ beforeUpdate(el, { value, modifiers: { trim, number } }, vnode) {
+ el._assign = getModelAssigner(vnode);
+ // avoid clearing unresolved text. #2302
+ if (el.composing)
+ return;
+ if (document.activeElement === el) {
+ if (trim && el.value.trim() === value) {
+ return;
+ }
+ if ((number || el.type === 'number') && toNumber(el.value) === value) {
+ return;
+ }
+ }
+ const newValue = value == null ? '' : value;
+ if (el.value !== newValue) {
+ el.value = newValue;
+ }
+ }
+ };
+ const vModelCheckbox = {
+ created(el, _, vnode) {
+ el._assign = getModelAssigner(vnode);
+ addEventListener(el, 'change', () => {
+ const modelValue = el._modelValue;
+ const elementValue = getValue(el);
+ const checked = el.checked;
+ const assign = el._assign;
+ if (isArray(modelValue)) {
+ const index = looseIndexOf(modelValue, elementValue);
+ const found = index !== -1;
+ if (checked && !found) {
+ assign(modelValue.concat(elementValue));
+ }
+ else if (!checked && found) {
+ const filtered = [...modelValue];
+ filtered.splice(index, 1);
+ assign(filtered);
+ }
+ }
+ else if (isSet(modelValue)) {
+ const cloned = new Set(modelValue);
+ if (checked) {
+ cloned.add(elementValue);
+ }
+ else {
+ cloned.delete(elementValue);
+ }
+ assign(cloned);
+ }
+ else {
+ assign(getCheckboxValue(el, checked));
+ }
+ });
+ },
+ // set initial checked on mount to wait for true-value/false-value
+ mounted: setChecked,
+ beforeUpdate(el, binding, vnode) {
+ el._assign = getModelAssigner(vnode);
+ setChecked(el, binding, vnode);
+ }
+ };
+ function setChecked(el, { value, oldValue }, vnode) {
+ el._modelValue = value;
+ if (isArray(value)) {
+ el.checked = looseIndexOf(value, vnode.props.value) > -1;
+ }
+ else if (isSet(value)) {
+ el.checked = value.has(vnode.props.value);
+ }
+ else if (value !== oldValue) {
+ el.checked = looseEqual(value, getCheckboxValue(el, true));
+ }
+ }
+ const vModelRadio = {
+ created(el, { value }, vnode) {
+ el.checked = looseEqual(value, vnode.props.value);
+ el._assign = getModelAssigner(vnode);
+ addEventListener(el, 'change', () => {
+ el._assign(getValue(el));
+ });
+ },
+ beforeUpdate(el, { value, oldValue }, vnode) {
+ el._assign = getModelAssigner(vnode);
+ if (value !== oldValue) {
+ el.checked = looseEqual(value, vnode.props.value);
+ }
+ }
+ };
+ const vModelSelect = {
+ created(el, { value, modifiers: { number } }, vnode) {
+ const isSetModel = isSet(value);
+ addEventListener(el, 'change', () => {
+ const selectedVal = Array.prototype.filter
+ .call(el.options, (o) => o.selected)
+ .map((o) => number ? toNumber(getValue(o)) : getValue(o));
+ el._assign(el.multiple
+ ? isSetModel
+ ? new Set(selectedVal)
+ : selectedVal
+ : selectedVal[0]);
+ });
+ el._assign = getModelAssigner(vnode);
+ },
+ // set value in mounted & updated because <select> relies on its children
+ // <option>s.
+ mounted(el, { value }) {
+ setSelected(el, value);
+ },
+ beforeUpdate(el, _binding, vnode) {
+ el._assign = getModelAssigner(vnode);
+ },
+ updated(el, { value }) {
+ setSelected(el, value);
+ }
+ };
+ function setSelected(el, value) {
+ const isMultiple = el.multiple;
+ if (isMultiple && !isArray(value) && !isSet(value)) {
+
+ warn(`<select multiple v-model> expects an Array or Set value for its binding, ` +
+ `but got ${Object.prototype.toString.call(value).slice(8, -1)}.`);
+ return;
+ }
+ for (let i = 0, l = el.options.length; i < l; i++) {
+ const option = el.options[i];
+ const optionValue = getValue(option);
+ if (isMultiple) {
+ if (isArray(value)) {
+ option.selected = looseIndexOf(value, optionValue) > -1;
+ }
+ else {
+ option.selected = value.has(optionValue);
+ }
+ }
+ else {
+ if (looseEqual(getValue(option), value)) {
+ el.selectedIndex = i;
+ return;
+ }
+ }
+ }
+ if (!isMultiple) {
+ el.selectedIndex = -1;
+ }
+ }
+ // retrieve raw value set via :value bindings
+ function getValue(el) {
+ return '_value' in el ? el._value : el.value;
+ }
+ // retrieve raw value for true-value and false-value set via :true-value or :false-value bindings
+ function getCheckboxValue(el, checked) {
+ const key = checked ? '_trueValue' : '_falseValue';
+ return key in el ? el[key] : checked;
+ }
+ const vModelDynamic = {
+ created(el, binding, vnode) {
+ callModelHook(el, binding, vnode, null, 'created');
+ },
+ mounted(el, binding, vnode) {
+ callModelHook(el, binding, vnode, null, 'mounted');
+ },
+ beforeUpdate(el, binding, vnode, prevVNode) {
+ callModelHook(el, binding, vnode, prevVNode, 'beforeUpdate');
+ },
+ updated(el, binding, vnode, prevVNode) {
+ callModelHook(el, binding, vnode, prevVNode, 'updated');
+ }
+ };
+ function callModelHook(el, binding, vnode, prevVNode, hook) {
+ let modelToUse;
+ switch (el.tagName) {
+ case 'SELECT':
+ modelToUse = vModelSelect;
+ break;
+ case 'TEXTAREA':
+ modelToUse = vModelText;
+ break;
+ default:
+ switch (vnode.props && vnode.props.type) {
+ case 'checkbox':
+ modelToUse = vModelCheckbox;
+ break;
+ case 'radio':
+ modelToUse = vModelRadio;
+ break;
+ default:
+ modelToUse = vModelText;
+ }
+ }
+ const fn = modelToUse[hook];
+ fn && fn(el, binding, vnode, prevVNode);
+ }
+
+ const systemModifiers = ['ctrl', 'shift', 'alt', 'meta'];
+ const modifierGuards = {
+ stop: e => e.stopPropagation(),
+ prevent: e => e.preventDefault(),
+ self: e => e.target !== e.currentTarget,
+ ctrl: e => !e.ctrlKey,
+ shift: e => !e.shiftKey,
+ alt: e => !e.altKey,
+ meta: e => !e.metaKey,
+ left: e => 'button' in e && e.button !== 0,
+ middle: e => 'button' in e && e.button !== 1,
+ right: e => 'button' in e && e.button !== 2,
+ exact: (e, modifiers) => systemModifiers.some(m => e[`${m}Key`] && !modifiers.includes(m))
+ };
+ /**
+ * @private
+ */
+ const withModifiers = (fn, modifiers) => {
+ return (event, ...args) => {
+ for (let i = 0; i < modifiers.length; i++) {
+ const guard = modifierGuards[modifiers[i]];
+ if (guard && guard(event, modifiers))
+ return;
+ }
+ return fn(event, ...args);
+ };
+ };
+ // Kept for 2.x compat.
+ // Note: IE11 compat for `spacebar` and `del` is removed for now.
+ const keyNames = {
+ esc: 'escape',
+ space: ' ',
+ up: 'arrow-up',
+ left: 'arrow-left',
+ right: 'arrow-right',
+ down: 'arrow-down',
+ delete: 'backspace'
+ };
+ /**
+ * @private
+ */
+ const withKeys = (fn, modifiers) => {
+ return (event) => {
+ if (!('key' in event))
+ return;
+ const eventKey = hyphenate(event.key);
+ if (
+ // None of the provided key modifiers match the current event key
+ !modifiers.some(k => k === eventKey || keyNames[k] === eventKey)) {
+ return;
+ }
+ return fn(event);
+ };
+ };
+
+ const vShow = {
+ beforeMount(el, { value }, { transition }) {
+ el._vod = el.style.display === 'none' ? '' : el.style.display;
+ if (transition && value) {
+ transition.beforeEnter(el);
+ }
+ else {
+ setDisplay(el, value);
+ }
+ },
+ mounted(el, { value }, { transition }) {
+ if (transition && value) {
+ transition.enter(el);
+ }
+ },
+ updated(el, { value, oldValue }, { transition }) {
+ if (transition && value !== oldValue) {
+ if (value) {
+ transition.beforeEnter(el);
+ setDisplay(el, true);
+ transition.enter(el);
+ }
+ else {
+ transition.leave(el, () => {
+ setDisplay(el, false);
+ });
+ }
+ }
+ else {
+ setDisplay(el, value);
+ }
+ },
+ beforeUnmount(el, { value }) {
+ setDisplay(el, value);
+ }
+ };
+ function setDisplay(el, value) {
+ el.style.display = value ? el._vod : 'none';
+ }
+
+ const rendererOptions = extend({ patchProp, forcePatchProp }, nodeOps);
+ // lazy create the renderer - this makes core renderer logic tree-shakable
+ // in case the user only imports reactivity utilities from Vue.
+ let renderer;
+ let enabledHydration = false;
+ function ensureRenderer() {
+ return renderer || (renderer = createRenderer(rendererOptions));
+ }
+ function ensureHydrationRenderer() {
+ renderer = enabledHydration
+ ? renderer
+ : createHydrationRenderer(rendererOptions);
+ enabledHydration = true;
+ return renderer;
+ }
+ // use explicit type casts here to avoid import() calls in rolled-up d.ts
+ const render = ((...args) => {
+ ensureRenderer().render(...args);
+ });
+ const hydrate = ((...args) => {
+ ensureHydrationRenderer().hydrate(...args);
+ });
+ const createApp = ((...args) => {
+ const app = ensureRenderer().createApp(...args);
+ {
+ injectNativeTagCheck(app);
+ }
+ const { mount } = app;
+ app.mount = (containerOrSelector) => {
+ const container = normalizeContainer(containerOrSelector);
+ if (!container)
+ return;
+ const component = app._component;
+ if (!isFunction(component) && !component.render && !component.template) {
+ component.template = container.innerHTML;
+ }
+ // clear content before mounting
+ container.innerHTML = '';
+ const proxy = mount(container);
+ if (container instanceof Element) {
+ container.removeAttribute('v-cloak');
+ container.setAttribute('data-v-app', '');
+ }
+ return proxy;
+ };
+ return app;
+ });
+ const createSSRApp = ((...args) => {
+ const app = ensureHydrationRenderer().createApp(...args);
+ {
+ injectNativeTagCheck(app);
+ }
+ const { mount } = app;
+ app.mount = (containerOrSelector) => {
+ const container = normalizeContainer(containerOrSelector);
+ if (container) {
+ return mount(container, true);
+ }
+ };
+ return app;
+ });
+ function injectNativeTagCheck(app) {
+ // Inject `isNativeTag`
+ // this is used for component name validation (dev only)
+ Object.defineProperty(app.config, 'isNativeTag', {
+ value: (tag) => isHTMLTag(tag) || isSVGTag(tag),
+ writable: false
+ });
+ }
+ function normalizeContainer(container) {
+ if (isString(container)) {
+ const res = document.querySelector(container);
+ if ( !res) {
+ warn(`Failed to mount app: mount target selector "${container}" returned null.`);
+ }
+ return res;
+ }
+ if (
+ container instanceof ShadowRoot &&
+ container.mode === 'closed') {
+ warn(`mounting on a ShadowRoot with \`{mode: "closed"}\` may lead to unpredictable bugs`);
+ }
+ return container;
+ }
+
+ function initDev() {
+ const target = getGlobalThis();
+ target.__VUE__ = true;
+ setDevtoolsHook(target.__VUE_DEVTOOLS_GLOBAL_HOOK__);
+ {
+ {
+ console.info(`You are running a development build of Vue.\n` +
+ `Make sure to use the production build (*.prod.js) when deploying for production.`);
+ }
+ initCustomFormatter();
+ }
+ }
+
+ function defaultOnError(error) {
+ throw error;
+ }
+ function createCompilerError(code, loc, messages, additionalMessage) {
+ const msg = (messages || errorMessages)[code] + (additionalMessage || ``)
+ ;
+ const error = new SyntaxError(String(msg));
+ error.code = code;
+ error.loc = loc;
+ return error;
+ }
+ const errorMessages = {
+ // parse errors
+ [0 /* ABRUPT_CLOSING_OF_EMPTY_COMMENT */]: 'Illegal comment.',
+ [1 /* CDATA_IN_HTML_CONTENT */]: 'CDATA section is allowed only in XML context.',
+ [2 /* DUPLICATE_ATTRIBUTE */]: 'Duplicate attribute.',
+ [3 /* END_TAG_WITH_ATTRIBUTES */]: 'End tag cannot have attributes.',
+ [4 /* END_TAG_WITH_TRAILING_SOLIDUS */]: "Illegal '/' in tags.",
+ [5 /* EOF_BEFORE_TAG_NAME */]: 'Unexpected EOF in tag.',
+ [6 /* EOF_IN_CDATA */]: 'Unexpected EOF in CDATA section.',
+ [7 /* EOF_IN_COMMENT */]: 'Unexpected EOF in comment.',
+ [8 /* EOF_IN_SCRIPT_HTML_COMMENT_LIKE_TEXT */]: 'Unexpected EOF in script.',
+ [9 /* EOF_IN_TAG */]: 'Unexpected EOF in tag.',
+ [10 /* INCORRECTLY_CLOSED_COMMENT */]: 'Incorrectly closed comment.',
+ [11 /* INCORRECTLY_OPENED_COMMENT */]: 'Incorrectly opened comment.',
+ [12 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */]: "Illegal tag name. Use '<' to print '<'.",
+ [13 /* MISSING_ATTRIBUTE_VALUE */]: 'Attribute value was expected.',
+ [14 /* MISSING_END_TAG_NAME */]: 'End tag name was expected.',
+ [15 /* MISSING_WHITESPACE_BETWEEN_ATTRIBUTES */]: 'Whitespace was expected.',
+ [16 /* NESTED_COMMENT */]: "Unexpected '<!--' in comment.",
+ [17 /* UNEXPECTED_CHARACTER_IN_ATTRIBUTE_NAME */]: 'Attribute name cannot contain U+0022 ("), U+0027 (\'), and U+003C (<).',
+ [18 /* UNEXPECTED_CHARACTER_IN_UNQUOTED_ATTRIBUTE_VALUE */]: 'Unquoted attribute value cannot contain U+0022 ("), U+0027 (\'), U+003C (<), U+003D (=), and U+0060 (`).',
+ [19 /* UNEXPECTED_EQUALS_SIGN_BEFORE_ATTRIBUTE_NAME */]: "Attribute name cannot start with '='.",
+ [21 /* UNEXPECTED_QUESTION_MARK_INSTEAD_OF_TAG_NAME */]: "'<?' is allowed only in XML context.",
+ [22 /* UNEXPECTED_SOLIDUS_IN_TAG */]: "Illegal '/' in tags.",
+ // Vue-specific parse errors
+ [23 /* X_INVALID_END_TAG */]: 'Invalid end tag.',
+ [24 /* X_MISSING_END_TAG */]: 'Element is missing end tag.',
+ [25 /* X_MISSING_INTERPOLATION_END */]: 'Interpolation end sign was not found.',
+ [26 /* X_MISSING_DYNAMIC_DIRECTIVE_ARGUMENT_END */]: 'End bracket for dynamic directive argument was not found. ' +
+ 'Note that dynamic directive argument cannot contain spaces.',
+ // transform errors
+ [27 /* X_V_IF_NO_EXPRESSION */]: `v-if/v-else-if is missing expression.`,
+ [28 /* X_V_IF_SAME_KEY */]: `v-if/else branches must use unique keys.`,
+ [29 /* X_V_ELSE_NO_ADJACENT_IF */]: `v-else/v-else-if has no adjacent v-if.`,
+ [30 /* X_V_FOR_NO_EXPRESSION */]: `v-for is missing expression.`,
+ [31 /* X_V_FOR_MALFORMED_EXPRESSION */]: `v-for has invalid expression.`,
+ [32 /* X_V_FOR_TEMPLATE_KEY_PLACEMENT */]: `<template v-for> key should be placed on the <template> tag.`,
+ [33 /* X_V_BIND_NO_EXPRESSION */]: `v-bind is missing expression.`,
+ [34 /* X_V_ON_NO_EXPRESSION */]: `v-on is missing expression.`,
+ [35 /* X_V_SLOT_UNEXPECTED_DIRECTIVE_ON_SLOT_OUTLET */]: `Unexpected custom directive on <slot> outlet.`,
+ [36 /* X_V_SLOT_MIXED_SLOT_USAGE */]: `Mixed v-slot usage on both the component and nested <template>.` +
+ `When there are multiple named slots, all slots should use <template> ` +
+ `syntax to avoid scope ambiguity.`,
+ [37 /* X_V_SLOT_DUPLICATE_SLOT_NAMES */]: `Duplicate slot names found. `,
+ [38 /* X_V_SLOT_EXTRANEOUS_DEFAULT_SLOT_CHILDREN */]: `Extraneous children found when component already has explicitly named ` +
+ `default slot. These children will be ignored.`,
+ [39 /* X_V_SLOT_MISPLACED */]: `v-slot can only be used on components or <template> tags.`,
+ [40 /* X_V_MODEL_NO_EXPRESSION */]: `v-model is missing expression.`,
+ [41 /* X_V_MODEL_MALFORMED_EXPRESSION */]: `v-model value must be a valid JavaScript member expression.`,
+ [42 /* X_V_MODEL_ON_SCOPE_VARIABLE */]: `v-model cannot be used on v-for or v-slot scope variables because they are not writable.`,
+ [43 /* X_INVALID_EXPRESSION */]: `Error parsing JavaScript expression: `,
+ [44 /* X_KEEP_ALIVE_INVALID_CHILDREN */]: `<KeepAlive> expects exactly one child component.`,
+ // generic errors
+ [45 /* X_PREFIX_ID_NOT_SUPPORTED */]: `"prefixIdentifiers" option is not supported in this build of compiler.`,
+ [46 /* X_MODULE_MODE_NOT_SUPPORTED */]: `ES module mode is not supported in this build of compiler.`,
+ [47 /* X_CACHE_HANDLER_NOT_SUPPORTED */]: `"cacheHandlers" option is only supported when the "prefixIdentifiers" option is enabled.`,
+ [48 /* X_SCOPE_ID_NOT_SUPPORTED */]: `"scopeId" option is only supported in module mode.`
+ };
+
+ const FRAGMENT = Symbol( `Fragment` );
+ const TELEPORT = Symbol( `Teleport` );
+ const SUSPENSE = Symbol( `Suspense` );
+ const KEEP_ALIVE = Symbol( `KeepAlive` );
+ const BASE_TRANSITION = Symbol( `BaseTransition` );
+ const OPEN_BLOCK = Symbol( `openBlock` );
+ const CREATE_BLOCK = Symbol( `createBlock` );
+ const CREATE_VNODE = Symbol( `createVNode` );
+ const CREATE_COMMENT = Symbol( `createCommentVNode` );
+ const CREATE_TEXT = Symbol( `createTextVNode` );
+ const CREATE_STATIC = Symbol( `createStaticVNode` );
+ const RESOLVE_COMPONENT = Symbol( `resolveComponent` );
+ const RESOLVE_DYNAMIC_COMPONENT = Symbol( `resolveDynamicComponent` );
+ const RESOLVE_DIRECTIVE = Symbol( `resolveDirective` );
+ const WITH_DIRECTIVES = Symbol( `withDirectives` );
+ const RENDER_LIST = Symbol( `renderList` );
+ const RENDER_SLOT = Symbol( `renderSlot` );
+ const CREATE_SLOTS = Symbol( `createSlots` );
+ const TO_DISPLAY_STRING = Symbol( `toDisplayString` );
+ const MERGE_PROPS = Symbol( `mergeProps` );
+ const TO_HANDLERS = Symbol( `toHandlers` );
+ const CAMELIZE = Symbol( `camelize` );
+ const CAPITALIZE = Symbol( `capitalize` );
+ const TO_HANDLER_KEY = Symbol( `toHandlerKey` );
+ const SET_BLOCK_TRACKING = Symbol( `setBlockTracking` );
+ const PUSH_SCOPE_ID = Symbol( `pushScopeId` );
+ const POP_SCOPE_ID = Symbol( `popScopeId` );
+ const WITH_SCOPE_ID = Symbol( `withScopeId` );
+ const WITH_CTX = Symbol( `withCtx` );
+ const UNREF = Symbol( `unref` );
+ const IS_REF = Symbol( `isRef` );
+ // Name mapping for runtime helpers that need to be imported from 'vue' in
+ // generated code. Make sure these are correctly exported in the runtime!
+ // Using `any` here because TS doesn't allow symbols as index type.
+ const helperNameMap = {
+ [FRAGMENT]: `Fragment`,
+ [TELEPORT]: `Teleport`,
+ [SUSPENSE]: `Suspense`,
+ [KEEP_ALIVE]: `KeepAlive`,
+ [BASE_TRANSITION]: `BaseTransition`,
+ [OPEN_BLOCK]: `openBlock`,
+ [CREATE_BLOCK]: `createBlock`,
+ [CREATE_VNODE]: `createVNode`,
+ [CREATE_COMMENT]: `createCommentVNode`,
+ [CREATE_TEXT]: `createTextVNode`,
+ [CREATE_STATIC]: `createStaticVNode`,
+ [RESOLVE_COMPONENT]: `resolveComponent`,
+ [RESOLVE_DYNAMIC_COMPONENT]: `resolveDynamicComponent`,
+ [RESOLVE_DIRECTIVE]: `resolveDirective`,
+ [WITH_DIRECTIVES]: `withDirectives`,
+ [RENDER_LIST]: `renderList`,
+ [RENDER_SLOT]: `renderSlot`,
+ [CREATE_SLOTS]: `createSlots`,
+ [TO_DISPLAY_STRING]: `toDisplayString`,
+ [MERGE_PROPS]: `mergeProps`,
+ [TO_HANDLERS]: `toHandlers`,
+ [CAMELIZE]: `camelize`,
+ [CAPITALIZE]: `capitalize`,
+ [TO_HANDLER_KEY]: `toHandlerKey`,
+ [SET_BLOCK_TRACKING]: `setBlockTracking`,
+ [PUSH_SCOPE_ID]: `pushScopeId`,
+ [POP_SCOPE_ID]: `popScopeId`,
+ [WITH_SCOPE_ID]: `withScopeId`,
+ [WITH_CTX]: `withCtx`,
+ [UNREF]: `unref`,
+ [IS_REF]: `isRef`
+ };
+ function registerRuntimeHelpers(helpers) {
+ Object.getOwnPropertySymbols(helpers).forEach(s => {
+ helperNameMap[s] = helpers[s];
+ });
+ }
+
+ // AST Utilities ---------------------------------------------------------------
+ // Some expressions, e.g. sequence and conditional expressions, are never
+ // associated with template nodes, so their source locations are just a stub.
+ // Container types like CompoundExpression also don't need a real location.
+ const locStub = {
+ source: '',
+ start: { line: 1, column: 1, offset: 0 },
+ end: { line: 1, column: 1, offset: 0 }
+ };
+ function createRoot(children, loc = locStub) {
+ return {
+ type: 0 /* ROOT */,
+ children,
+ helpers: [],
+ components: [],
+ directives: [],
+ hoists: [],
+ imports: [],
+ cached: 0,
+ temps: 0,
+ codegenNode: undefined,
+ loc
+ };
+ }
+ function createVNodeCall(context, tag, props, children, patchFlag, dynamicProps, directives, isBlock = false, disableTracking = false, loc = locStub) {
+ if (context) {
+ if (isBlock) {
+ context.helper(OPEN_BLOCK);
+ context.helper(CREATE_BLOCK);
+ }
+ else {
+ context.helper(CREATE_VNODE);
+ }
+ if (directives) {
+ context.helper(WITH_DIRECTIVES);
+ }
+ }
+ return {
+ type: 13 /* VNODE_CALL */,
+ tag,
+ props,
+ children,
+ patchFlag,
+ dynamicProps,
+ directives,
+ isBlock,
+ disableTracking,
+ loc
+ };
+ }
+ function createArrayExpression(elements, loc = locStub) {
+ return {
+ type: 17 /* JS_ARRAY_EXPRESSION */,
+ loc,
+ elements
+ };
+ }
+ function createObjectExpression(properties, loc = locStub) {
+ return {
+ type: 15 /* JS_OBJECT_EXPRESSION */,
+ loc,
+ properties
+ };
+ }
+ function createObjectProperty(key, value) {
+ return {
+ type: 16 /* JS_PROPERTY */,
+ loc: locStub,
+ key: isString(key) ? createSimpleExpression(key, true) : key,
+ value
+ };
+ }
+ function createSimpleExpression(content, isStatic, loc = locStub, constType = 0 /* NOT_CONSTANT */) {
+ return {
+ type: 4 /* SIMPLE_EXPRESSION */,
+ loc,
+ content,
+ isStatic,
+ constType: isStatic ? 3 /* CAN_STRINGIFY */ : constType
+ };
+ }
+ function createCompoundExpression(children, loc = locStub) {
+ return {
+ type: 8 /* COMPOUND_EXPRESSION */,
+ loc,
+ children
+ };
+ }
+ function createCallExpression(callee, args = [], loc = locStub) {
+ return {
+ type: 14 /* JS_CALL_EXPRESSION */,
+ loc,
+ callee,
+ arguments: args
+ };
+ }
+ function createFunctionExpression(params, returns = undefined, newline = false, isSlot = false, loc = locStub) {
+ return {
+ type: 18 /* JS_FUNCTION_EXPRESSION */,
+ params,
+ returns,
+ newline,
+ isSlot,
+ loc
+ };
+ }
+ function createConditionalExpression(test, consequent, alternate, newline = true) {
+ return {
+ type: 19 /* JS_CONDITIONAL_EXPRESSION */,
+ test,
+ consequent,
+ alternate,
+ newline,
+ loc: locStub
+ };
+ }
+ function createCacheExpression(index, value, isVNode = false) {
+ return {
+ type: 20 /* JS_CACHE_EXPRESSION */,
+ index,
+ value,
+ isVNode,
+ loc: locStub
+ };
+ }
+
+ const isStaticExp = (p) => p.type === 4 /* SIMPLE_EXPRESSION */ && p.isStatic;
+ const isBuiltInType = (tag, expected) => tag === expected || tag === hyphenate(expected);
+ function isCoreComponent(tag) {
+ if (isBuiltInType(tag, 'Teleport')) {
+ return TELEPORT;
+ }
+ else if (isBuiltInType(tag, 'Suspense')) {
+ return SUSPENSE;
+ }
+ else if (isBuiltInType(tag, 'KeepAlive')) {
+ return KEEP_ALIVE;
+ }
+ else if (isBuiltInType(tag, 'BaseTransition')) {
+ return BASE_TRANSITION;
+ }
+ }
+ const nonIdentifierRE = /^\d|[^\$\w]/;
+ const isSimpleIdentifier = (name) => !nonIdentifierRE.test(name);
+ const memberExpRE = /^[A-Za-z_$][\w$]*(?:\s*\.\s*[A-Za-z_$][\w$]*|\[[^\]]+\])*$/;
+ const isMemberExpression = (path) => {
+ if (!path)
+ return false;
+ return memberExpRE.test(path.trim());
+ };
+ function getInnerRange(loc, offset, length) {
+ const source = loc.source.substr(offset, length);
+ const newLoc = {
+ source,
+ start: advancePositionWithClone(loc.start, loc.source, offset),
+ end: loc.end
+ };
+ if (length != null) {
+ newLoc.end = advancePositionWithClone(loc.start, loc.source, offset + length);
+ }
+ return newLoc;
+ }
+ function advancePositionWithClone(pos, source, numberOfCharacters = source.length) {
+ return advancePositionWithMutation(extend({}, pos), source, numberOfCharacters);
+ }
+ // advance by mutation without cloning (for performance reasons), since this
+ // gets called a lot in the parser
+ function advancePositionWithMutation(pos, source, numberOfCharacters = source.length) {
+ let linesCount = 0;
+ let lastNewLinePos = -1;
+ for (let i = 0; i < numberOfCharacters; i++) {
+ if (source.charCodeAt(i) === 10 /* newline char code */) {
+ linesCount++;
+ lastNewLinePos = i;
+ }
+ }
+ pos.offset += numberOfCharacters;
+ pos.line += linesCount;
+ pos.column =
+ lastNewLinePos === -1
+ ? pos.column + numberOfCharacters
+ : numberOfCharacters - lastNewLinePos;
+ return pos;
+ }
+ function assert(condition, msg) {
+ /* istanbul ignore if */
+ if (!condition) {
+ throw new Error(msg || `unexpected compiler condition`);
+ }
+ }
+ function findDir(node, name, allowEmpty = false) {
+ for (let i = 0; i < node.props.length; i++) {
+ const p = node.props[i];
+ if (p.type === 7 /* DIRECTIVE */ &&
+ (allowEmpty || p.exp) &&
+ (isString(name) ? p.name === name : name.test(p.name))) {
+ return p;
+ }
+ }
+ }
+ function findProp(node, name, dynamicOnly = false, allowEmpty = false) {
+ for (let i = 0; i < node.props.length; i++) {
+ const p = node.props[i];
+ if (p.type === 6 /* ATTRIBUTE */) {
+ if (dynamicOnly)
+ continue;
+ if (p.name === name && (p.value || allowEmpty)) {
+ return p;
+ }
+ }
+ else if (p.name === 'bind' &&
+ (p.exp || allowEmpty) &&
+ isBindKey(p.arg, name)) {
+ return p;
+ }
+ }
+ }
+ function isBindKey(arg, name) {
+ return !!(arg && isStaticExp(arg) && arg.content === name);
+ }
+ function hasDynamicKeyVBind(node) {
+ return node.props.some(p => p.type === 7 /* DIRECTIVE */ &&
+ p.name === 'bind' &&
+ (!p.arg || // v-bind="obj"
+ p.arg.type !== 4 /* SIMPLE_EXPRESSION */ || // v-bind:[_ctx.foo]
+ !p.arg.isStatic) // v-bind:[foo]
+ );
+ }
+ function isText(node) {
+ return node.type === 5 /* INTERPOLATION */ || node.type === 2 /* TEXT */;
+ }
+ function isVSlot(p) {
+ return p.type === 7 /* DIRECTIVE */ && p.name === 'slot';
+ }
+ function isTemplateNode(node) {
+ return (node.type === 1 /* ELEMENT */ && node.tagType === 3 /* TEMPLATE */);
+ }
+ function isSlotOutlet(node) {
+ return node.type === 1 /* ELEMENT */ && node.tagType === 2 /* SLOT */;
+ }
+ function injectProp(node, prop, context) {
+ let propsWithInjection;
+ const props = node.type === 13 /* VNODE_CALL */ ? node.props : node.arguments[2];
+ if (props == null || isString(props)) {
+ propsWithInjection = createObjectExpression([prop]);
+ }
+ else if (props.type === 14 /* JS_CALL_EXPRESSION */) {
+ // merged props... add ours
+ // only inject key to object literal if it's the first argument so that
+ // if doesn't override user provided keys
+ const first = props.arguments[0];
+ if (!isString(first) && first.type === 15 /* JS_OBJECT_EXPRESSION */) {
+ first.properties.unshift(prop);
+ }
+ else {
+ if (props.callee === TO_HANDLERS) {
+ // #2366
+ propsWithInjection = createCallExpression(context.helper(MERGE_PROPS), [
+ createObjectExpression([prop]),
+ props
+ ]);
+ }
+ else {
+ props.arguments.unshift(createObjectExpression([prop]));
+ }
+ }
+ !propsWithInjection && (propsWithInjection = props);
+ }
+ else if (props.type === 15 /* JS_OBJECT_EXPRESSION */) {
+ let alreadyExists = false;
+ // check existing key to avoid overriding user provided keys
+ if (prop.key.type === 4 /* SIMPLE_EXPRESSION */) {
+ const propKeyName = prop.key.content;
+ alreadyExists = props.properties.some(p => p.key.type === 4 /* SIMPLE_EXPRESSION */ &&
+ p.key.content === propKeyName);
+ }
+ if (!alreadyExists) {
+ props.properties.unshift(prop);
+ }
+ propsWithInjection = props;
+ }
+ else {
+ // single v-bind with expression, return a merged replacement
+ propsWithInjection = createCallExpression(context.helper(MERGE_PROPS), [
+ createObjectExpression([prop]),
+ props
+ ]);
+ }
+ if (node.type === 13 /* VNODE_CALL */) {
+ node.props = propsWithInjection;
+ }
+ else {
+ node.arguments[2] = propsWithInjection;
+ }
+ }
+ function toValidAssetId(name, type) {
+ return `_${type}_${name.replace(/[^\w]/g, '_')}`;
+ }
+
+ // The default decoder only provides escapes for characters reserved as part of
+ // the template syntax, and is only used if the custom renderer did not provide
+ // a platform-specific decoder.
+ const decodeRE = /&(gt|lt|amp|apos|quot);/g;
+ const decodeMap = {
+ gt: '>',
+ lt: '<',
+ amp: '&',
+ apos: "'",
+ quot: '"'
+ };
+ const defaultParserOptions = {
+ delimiters: [`{{`, `}}`],
+ getNamespace: () => 0 /* HTML */,
+ getTextMode: () => 0 /* DATA */,
+ isVoidTag: NO,
+ isPreTag: NO,
+ isCustomElement: NO,
+ decodeEntities: (rawText) => rawText.replace(decodeRE, (_, p1) => decodeMap[p1]),
+ onError: defaultOnError,
+ comments: false
+ };
+ function baseParse(content, options = {}) {
+ const context = createParserContext(content, options);
+ const start = getCursor(context);
+ return createRoot(parseChildren(context, 0 /* DATA */, []), getSelection(context, start));
+ }
+ function createParserContext(content, rawOptions) {
+ const options = extend({}, defaultParserOptions);
+ for (const key in rawOptions) {
+ // @ts-ignore
+ options[key] = rawOptions[key] || defaultParserOptions[key];
+ }
+ return {
+ options,
+ column: 1,
+ line: 1,
+ offset: 0,
+ originalSource: content,
+ source: content,
+ inPre: false,
+ inVPre: false
+ };
+ }
+ function parseChildren(context, mode, ancestors) {
+ const parent = last(ancestors);
+ const ns = parent ? parent.ns : 0 /* HTML */;
+ const nodes = [];
+ while (!isEnd(context, mode, ancestors)) {
+ const s = context.source;
+ let node = undefined;
+ if (mode === 0 /* DATA */ || mode === 1 /* RCDATA */) {
+ if (!context.inVPre && startsWith(s, context.options.delimiters[0])) {
+ // '{{'
+ node = parseInterpolation(context, mode);
+ }
+ else if (mode === 0 /* DATA */ && s[0] === '<') {
+ // https://html.spec.whatwg.org/multipage/parsing.html#tag-open-state
+ if (s.length === 1) {
+ emitError(context, 5 /* EOF_BEFORE_TAG_NAME */, 1);
+ }
+ else if (s[1] === '!') {
+ // https://html.spec.whatwg.org/multipage/parsing.html#markup-declaration-open-state
+ if (startsWith(s, '<!--')) {
+ node = parseComment(context);
+ }
+ else if (startsWith(s, '<!DOCTYPE')) {
+ // Ignore DOCTYPE by a limitation.
+ node = parseBogusComment(context);
+ }
+ else if (startsWith(s, '<![CDATA[')) {
+ if (ns !== 0 /* HTML */) {
+ node = parseCDATA(context, ancestors);
+ }
+ else {
+ emitError(context, 1 /* CDATA_IN_HTML_CONTENT */);
+ node = parseBogusComment(context);
+ }
+ }
+ else {
+ emitError(context, 11 /* INCORRECTLY_OPENED_COMMENT */);
+ node = parseBogusComment(context);
+ }
+ }
+ else if (s[1] === '/') {
+ // https://html.spec.whatwg.org/multipage/parsing.html#end-tag-open-state
+ if (s.length === 2) {
+ emitError(context, 5 /* EOF_BEFORE_TAG_NAME */, 2);
+ }
+ else if (s[2] === '>') {
+ emitError(context, 14 /* MISSING_END_TAG_NAME */, 2);
+ advanceBy(context, 3);
+ continue;
+ }
+ else if (/[a-z]/i.test(s[2])) {
+ emitError(context, 23 /* X_INVALID_END_TAG */);
+ parseTag(context, 1 /* End */, parent);
+ continue;
+ }
+ else {
+ emitError(context, 12 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */, 2);
+ node = parseBogusComment(context);
+ }
+ }
+ else if (/[a-z]/i.test(s[1])) {
+ node = parseElement(context, ancestors);
+ }
+ else if (s[1] === '?') {
+ emitError(context, 21 /* UNEXPECTED_QUESTION_MARK_INSTEAD_OF_TAG_NAME */, 1);
+ node = parseBogusComment(context);
+ }
+ else {
+ emitError(context, 12 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */, 1);
+ }
+ }
+ }
+ if (!node) {
+ node = parseText(context, mode);
+ }
+ if (isArray(node)) {
+ for (let i = 0; i < node.length; i++) {
+ pushNode(nodes, node[i]);
+ }
+ }
+ else {
+ pushNode(nodes, node);
+ }
+ }
+ // Whitespace management for more efficient output
+ // (same as v2 whitespace: 'condense')
+ let removedWhitespace = false;
+ if (mode !== 2 /* RAWTEXT */) {
+ for (let i = 0; i < nodes.length; i++) {
+ const node = nodes[i];
+ if (!context.inPre && node.type === 2 /* TEXT */) {
+ if (!/[^\t\r\n\f ]/.test(node.content)) {
+ const prev = nodes[i - 1];
+ const next = nodes[i + 1];
+ // If:
+ // - the whitespace is the first or last node, or:
+ // - the whitespace is adjacent to a comment, or:
+ // - the whitespace is between two elements AND contains newline
+ // Then the whitespace is ignored.
+ if (!prev ||
+ !next ||
+ prev.type === 3 /* COMMENT */ ||
+ next.type === 3 /* COMMENT */ ||
+ (prev.type === 1 /* ELEMENT */ &&
+ next.type === 1 /* ELEMENT */ &&
+ /[\r\n]/.test(node.content))) {
+ removedWhitespace = true;
+ nodes[i] = null;
+ }
+ else {
+ // Otherwise, condensed consecutive whitespace inside the text
+ // down to a single space
+ node.content = ' ';
+ }
+ }
+ else {
+ node.content = node.content.replace(/[\t\r\n\f ]+/g, ' ');
+ }
+ }
+ }
+ if (context.inPre && parent && context.options.isPreTag(parent.tag)) {
+ // remove leading newline per html spec
+ // https://html.spec.whatwg.org/multipage/grouping-content.html#the-pre-element
+ const first = nodes[0];
+ if (first && first.type === 2 /* TEXT */) {
+ first.content = first.content.replace(/^\r?\n/, '');
+ }
+ }
+ }
+ return removedWhitespace ? nodes.filter(Boolean) : nodes;
+ }
+ function pushNode(nodes, node) {
+ if (node.type === 2 /* TEXT */) {
+ const prev = last(nodes);
+ // Merge if both this and the previous node are text and those are
+ // consecutive. This happens for cases like "a < b".
+ if (prev &&
+ prev.type === 2 /* TEXT */ &&
+ prev.loc.end.offset === node.loc.start.offset) {
+ prev.content += node.content;
+ prev.loc.end = node.loc.end;
+ prev.loc.source += node.loc.source;
+ return;
+ }
+ }
+ nodes.push(node);
+ }
+ function parseCDATA(context, ancestors) {
+ advanceBy(context, 9);
+ const nodes = parseChildren(context, 3 /* CDATA */, ancestors);
+ if (context.source.length === 0) {
+ emitError(context, 6 /* EOF_IN_CDATA */);
+ }
+ else {
+ advanceBy(context, 3);
+ }
+ return nodes;
+ }
+ function parseComment(context) {
+ const start = getCursor(context);
+ let content;
+ // Regular comment.
+ const match = /--(\!)?>/.exec(context.source);
+ if (!match) {
+ content = context.source.slice(4);
+ advanceBy(context, context.source.length);
+ emitError(context, 7 /* EOF_IN_COMMENT */);
+ }
+ else {
+ if (match.index <= 3) {
+ emitError(context, 0 /* ABRUPT_CLOSING_OF_EMPTY_COMMENT */);
+ }
+ if (match[1]) {
+ emitError(context, 10 /* INCORRECTLY_CLOSED_COMMENT */);
+ }
+ content = context.source.slice(4, match.index);
+ // Advancing with reporting nested comments.
+ const s = context.source.slice(0, match.index);
+ let prevIndex = 1, nestedIndex = 0;
+ while ((nestedIndex = s.indexOf('<!--', prevIndex)) !== -1) {
+ advanceBy(context, nestedIndex - prevIndex + 1);
+ if (nestedIndex + 4 < s.length) {
+ emitError(context, 16 /* NESTED_COMMENT */);
+ }
+ prevIndex = nestedIndex + 1;
+ }
+ advanceBy(context, match.index + match[0].length - prevIndex + 1);
+ }
+ return {
+ type: 3 /* COMMENT */,
+ content,
+ loc: getSelection(context, start)
+ };
+ }
+ function parseBogusComment(context) {
+ const start = getCursor(context);
+ const contentStart = context.source[1] === '?' ? 1 : 2;
+ let content;
+ const closeIndex = context.source.indexOf('>');
+ if (closeIndex === -1) {
+ content = context.source.slice(contentStart);
+ advanceBy(context, context.source.length);
+ }
+ else {
+ content = context.source.slice(contentStart, closeIndex);
+ advanceBy(context, closeIndex + 1);
+ }
+ return {
+ type: 3 /* COMMENT */,
+ content,
+ loc: getSelection(context, start)
+ };
+ }
+ function parseElement(context, ancestors) {
+ // Start tag.
+ const wasInPre = context.inPre;
+ const wasInVPre = context.inVPre;
+ const parent = last(ancestors);
+ const element = parseTag(context, 0 /* Start */, parent);
+ const isPreBoundary = context.inPre && !wasInPre;
+ const isVPreBoundary = context.inVPre && !wasInVPre;
+ if (element.isSelfClosing || context.options.isVoidTag(element.tag)) {
+ return element;
+ }
+ // Children.
+ ancestors.push(element);
+ const mode = context.options.getTextMode(element, parent);
+ const children = parseChildren(context, mode, ancestors);
+ ancestors.pop();
+ element.children = children;
+ // End tag.
+ if (startsWithEndTagOpen(context.source, element.tag)) {
+ parseTag(context, 1 /* End */, parent);
+ }
+ else {
+ emitError(context, 24 /* X_MISSING_END_TAG */, 0, element.loc.start);
+ if (context.source.length === 0 && element.tag.toLowerCase() === 'script') {
+ const first = children[0];
+ if (first && startsWith(first.loc.source, '<!--')) {
+ emitError(context, 8 /* EOF_IN_SCRIPT_HTML_COMMENT_LIKE_TEXT */);
+ }
+ }
+ }
+ element.loc = getSelection(context, element.loc.start);
+ if (isPreBoundary) {
+ context.inPre = false;
+ }
+ if (isVPreBoundary) {
+ context.inVPre = false;
+ }
+ return element;
+ }
+ const isSpecialTemplateDirective = /*#__PURE__*/ makeMap(`if,else,else-if,for,slot`);
+ /**
+ * Parse a tag (E.g. `<div id=a>`) with that type (start tag or end tag).
+ */
+ function parseTag(context, type, parent) {
+ // Tag open.
+ const start = getCursor(context);
+ const match = /^<\/?([a-z][^\t\r\n\f />]*)/i.exec(context.source);
+ const tag = match[1];
+ const ns = context.options.getNamespace(tag, parent);
+ advanceBy(context, match[0].length);
+ advanceSpaces(context);
+ // save current state in case we need to re-parse attributes with v-pre
+ const cursor = getCursor(context);
+ const currentSource = context.source;
+ // Attributes.
+ let props = parseAttributes(context, type);
+ // check <pre> tag
+ if (context.options.isPreTag(tag)) {
+ context.inPre = true;
+ }
+ // check v-pre
+ if (!context.inVPre &&
+ props.some(p => p.type === 7 /* DIRECTIVE */ && p.name === 'pre')) {
+ context.inVPre = true;
+ // reset context
+ extend(context, cursor);
+ context.source = currentSource;
+ // re-parse attrs and filter out v-pre itself
+ props = parseAttributes(context, type).filter(p => p.name !== 'v-pre');
+ }
+ // Tag close.
+ let isSelfClosing = false;
+ if (context.source.length === 0) {
+ emitError(context, 9 /* EOF_IN_TAG */);
+ }
+ else {
+ isSelfClosing = startsWith(context.source, '/>');
+ if (type === 1 /* End */ && isSelfClosing) {
+ emitError(context, 4 /* END_TAG_WITH_TRAILING_SOLIDUS */);
+ }
+ advanceBy(context, isSelfClosing ? 2 : 1);
+ }
+ let tagType = 0 /* ELEMENT */;
+ const options = context.options;
+ if (!context.inVPre && !options.isCustomElement(tag)) {
+ const hasVIs = props.some(p => p.type === 7 /* DIRECTIVE */ && p.name === 'is');
+ if (options.isNativeTag && !hasVIs) {
+ if (!options.isNativeTag(tag))
+ tagType = 1 /* COMPONENT */;
+ }
+ else if (hasVIs ||
+ isCoreComponent(tag) ||
+ (options.isBuiltInComponent && options.isBuiltInComponent(tag)) ||
+ /^[A-Z]/.test(tag) ||
+ tag === 'component') {
+ tagType = 1 /* COMPONENT */;
+ }
+ if (tag === 'slot') {
+ tagType = 2 /* SLOT */;
+ }
+ else if (tag === 'template' &&
+ props.some(p => {
+ return (p.type === 7 /* DIRECTIVE */ && isSpecialTemplateDirective(p.name));
+ })) {
+ tagType = 3 /* TEMPLATE */;
+ }
+ }
+ return {
+ type: 1 /* ELEMENT */,
+ ns,
+ tag,
+ tagType,
+ props,
+ isSelfClosing,
+ children: [],
+ loc: getSelection(context, start),
+ codegenNode: undefined // to be created during transform phase
+ };
+ }
+ function parseAttributes(context, type) {
+ const props = [];
+ const attributeNames = new Set();
+ while (context.source.length > 0 &&
+ !startsWith(context.source, '>') &&
+ !startsWith(context.source, '/>')) {
+ if (startsWith(context.source, '/')) {
+ emitError(context, 22 /* UNEXPECTED_SOLIDUS_IN_TAG */);
+ advanceBy(context, 1);
+ advanceSpaces(context);
+ continue;
+ }
+ if (type === 1 /* End */) {
+ emitError(context, 3 /* END_TAG_WITH_ATTRIBUTES */);
+ }
+ const attr = parseAttribute(context, attributeNames);
+ if (type === 0 /* Start */) {
+ props.push(attr);
+ }
+ if (/^[^\t\r\n\f />]/.test(context.source)) {
+ emitError(context, 15 /* MISSING_WHITESPACE_BETWEEN_ATTRIBUTES */);
+ }
+ advanceSpaces(context);
+ }
+ return props;
+ }
+ function parseAttribute(context, nameSet) {
+ // Name.
+ const start = getCursor(context);
+ const match = /^[^\t\r\n\f />][^\t\r\n\f />=]*/.exec(context.source);
+ const name = match[0];
+ if (nameSet.has(name)) {
+ emitError(context, 2 /* DUPLICATE_ATTRIBUTE */);
+ }
+ nameSet.add(name);
+ if (name[0] === '=') {
+ emitError(context, 19 /* UNEXPECTED_EQUALS_SIGN_BEFORE_ATTRIBUTE_NAME */);
+ }
+ {
+ const pattern = /["'<]/g;
+ let m;
+ while ((m = pattern.exec(name))) {
+ emitError(context, 17 /* UNEXPECTED_CHARACTER_IN_ATTRIBUTE_NAME */, m.index);
+ }
+ }
+ advanceBy(context, name.length);
+ // Value
+ let value = undefined;
+ if (/^[\t\r\n\f ]*=/.test(context.source)) {
+ advanceSpaces(context);
+ advanceBy(context, 1);
+ advanceSpaces(context);
+ value = parseAttributeValue(context);
+ if (!value) {
+ emitError(context, 13 /* MISSING_ATTRIBUTE_VALUE */);
+ }
+ }
+ const loc = getSelection(context, start);
+ if (!context.inVPre && /^(v-|:|@|#)/.test(name)) {
+ const match = /(?:^v-([a-z0-9-]+))?(?:(?::|^@|^#)(\[[^\]]+\]|[^\.]+))?(.+)?$/i.exec(name);
+ const dirName = match[1] ||
+ (startsWith(name, ':') ? 'bind' : startsWith(name, '@') ? 'on' : 'slot');
+ let arg;
+ if (match[2]) {
+ const isSlot = dirName === 'slot';
+ const startOffset = name.indexOf(match[2]);
+ const loc = getSelection(context, getNewPosition(context, start, startOffset), getNewPosition(context, start, startOffset + match[2].length + ((isSlot && match[3]) || '').length));
+ let content = match[2];
+ let isStatic = true;
+ if (content.startsWith('[')) {
+ isStatic = false;
+ if (!content.endsWith(']')) {
+ emitError(context, 26 /* X_MISSING_DYNAMIC_DIRECTIVE_ARGUMENT_END */);
+ }
+ content = content.substr(1, content.length - 2);
+ }
+ else if (isSlot) {
+ // #1241 special case for v-slot: vuetify relies extensively on slot
+ // names containing dots. v-slot doesn't have any modifiers and Vue 2.x
+ // supports such usage so we are keeping it consistent with 2.x.
+ content += match[3] || '';
+ }
+ arg = {
+ type: 4 /* SIMPLE_EXPRESSION */,
+ content,
+ isStatic,
+ constType: isStatic
+ ? 3 /* CAN_STRINGIFY */
+ : 0 /* NOT_CONSTANT */,
+ loc
+ };
+ }
+ if (value && value.isQuoted) {
+ const valueLoc = value.loc;
+ valueLoc.start.offset++;
+ valueLoc.start.column++;
+ valueLoc.end = advancePositionWithClone(valueLoc.start, value.content);
+ valueLoc.source = valueLoc.source.slice(1, -1);
+ }
+ return {
+ type: 7 /* DIRECTIVE */,
+ name: dirName,
+ exp: value && {
+ type: 4 /* SIMPLE_EXPRESSION */,
+ content: value.content,
+ isStatic: false,
+ // Treat as non-constant by default. This can be potentially set to
+ // other values by `transformExpression` to make it eligible for hoisting.
+ constType: 0 /* NOT_CONSTANT */,
+ loc: value.loc
+ },
+ arg,
+ modifiers: match[3] ? match[3].substr(1).split('.') : [],
+ loc
+ };
+ }
+ return {
+ type: 6 /* ATTRIBUTE */,
+ name,
+ value: value && {
+ type: 2 /* TEXT */,
+ content: value.content,
+ loc: value.loc
+ },
+ loc
+ };
+ }
+ function parseAttributeValue(context) {
+ const start = getCursor(context);
+ let content;
+ const quote = context.source[0];
+ const isQuoted = quote === `"` || quote === `'`;
+ if (isQuoted) {
+ // Quoted value.
+ advanceBy(context, 1);
+ const endIndex = context.source.indexOf(quote);
+ if (endIndex === -1) {
+ content = parseTextData(context, context.source.length, 4 /* ATTRIBUTE_VALUE */);
+ }
+ else {
+ content = parseTextData(context, endIndex, 4 /* ATTRIBUTE_VALUE */);
+ advanceBy(context, 1);
+ }
+ }
+ else {
+ // Unquoted
+ const match = /^[^\t\r\n\f >]+/.exec(context.source);
+ if (!match) {
+ return undefined;
+ }
+ const unexpectedChars = /["'<=`]/g;
+ let m;
+ while ((m = unexpectedChars.exec(match[0]))) {
+ emitError(context, 18 /* UNEXPECTED_CHARACTER_IN_UNQUOTED_ATTRIBUTE_VALUE */, m.index);
+ }
+ content = parseTextData(context, match[0].length, 4 /* ATTRIBUTE_VALUE */);
+ }
+ return { content, isQuoted, loc: getSelection(context, start) };
+ }
+ function parseInterpolation(context, mode) {
+ const [open, close] = context.options.delimiters;
+ const closeIndex = context.source.indexOf(close, open.length);
+ if (closeIndex === -1) {
+ emitError(context, 25 /* X_MISSING_INTERPOLATION_END */);
+ return undefined;
+ }
+ const start = getCursor(context);
+ advanceBy(context, open.length);
+ const innerStart = getCursor(context);
+ const innerEnd = getCursor(context);
+ const rawContentLength = closeIndex - open.length;
+ const rawContent = context.source.slice(0, rawContentLength);
+ const preTrimContent = parseTextData(context, rawContentLength, mode);
+ const content = preTrimContent.trim();
+ const startOffset = preTrimContent.indexOf(content);
+ if (startOffset > 0) {
+ advancePositionWithMutation(innerStart, rawContent, startOffset);
+ }
+ const endOffset = rawContentLength - (preTrimContent.length - content.length - startOffset);
+ advancePositionWithMutation(innerEnd, rawContent, endOffset);
+ advanceBy(context, close.length);
+ return {
+ type: 5 /* INTERPOLATION */,
+ content: {
+ type: 4 /* SIMPLE_EXPRESSION */,
+ isStatic: false,
+ // Set `isConstant` to false by default and will decide in transformExpression
+ constType: 0 /* NOT_CONSTANT */,
+ content,
+ loc: getSelection(context, innerStart, innerEnd)
+ },
+ loc: getSelection(context, start)
+ };
+ }
+ function parseText(context, mode) {
+ const endTokens = ['<', context.options.delimiters[0]];
+ if (mode === 3 /* CDATA */) {
+ endTokens.push(']]>');
+ }
+ let endIndex = context.source.length;
+ for (let i = 0; i < endTokens.length; i++) {
+ const index = context.source.indexOf(endTokens[i], 1);
+ if (index !== -1 && endIndex > index) {
+ endIndex = index;
+ }
+ }
+ const start = getCursor(context);
+ const content = parseTextData(context, endIndex, mode);
+ return {
+ type: 2 /* TEXT */,
+ content,
+ loc: getSelection(context, start)
+ };
+ }
+ /**
+ * Get text data with a given length from the current location.
+ * This translates HTML entities in the text data.
+ */
+ function parseTextData(context, length, mode) {
+ const rawText = context.source.slice(0, length);
+ advanceBy(context, length);
+ if (mode === 2 /* RAWTEXT */ ||
+ mode === 3 /* CDATA */ ||
+ rawText.indexOf('&') === -1) {
+ return rawText;
+ }
+ else {
+ // DATA or RCDATA containing "&"". Entity decoding required.
+ return context.options.decodeEntities(rawText, mode === 4 /* ATTRIBUTE_VALUE */);
+ }
+ }
+ function getCursor(context) {
+ const { column, line, offset } = context;
+ return { column, line, offset };
+ }
+ function getSelection(context, start, end) {
+ end = end || getCursor(context);
+ return {
+ start,
+ end,
+ source: context.originalSource.slice(start.offset, end.offset)
+ };
+ }
+ function last(xs) {
+ return xs[xs.length - 1];
+ }
+ function startsWith(source, searchString) {
+ return source.startsWith(searchString);
+ }
+ function advanceBy(context, numberOfCharacters) {
+ const { source } = context;
+ advancePositionWithMutation(context, source, numberOfCharacters);
+ context.source = source.slice(numberOfCharacters);
+ }
+ function advanceSpaces(context) {
+ const match = /^[\t\r\n\f ]+/.exec(context.source);
+ if (match) {
+ advanceBy(context, match[0].length);
+ }
+ }
+ function getNewPosition(context, start, numberOfCharacters) {
+ return advancePositionWithClone(start, context.originalSource.slice(start.offset, numberOfCharacters), numberOfCharacters);
+ }
+ function emitError(context, code, offset, loc = getCursor(context)) {
+ if (offset) {
+ loc.offset += offset;
+ loc.column += offset;
+ }
+ context.options.onError(createCompilerError(code, {
+ start: loc,
+ end: loc,
+ source: ''
+ }));
+ }
+ function isEnd(context, mode, ancestors) {
+ const s = context.source;
+ switch (mode) {
+ case 0 /* DATA */:
+ if (startsWith(s, '</')) {
+ //TODO: probably bad performance
+ for (let i = ancestors.length - 1; i >= 0; --i) {
+ if (startsWithEndTagOpen(s, ancestors[i].tag)) {
+ return true;
+ }
+ }
+ }
+ break;
+ case 1 /* RCDATA */:
+ case 2 /* RAWTEXT */: {
+ const parent = last(ancestors);
+ if (parent && startsWithEndTagOpen(s, parent.tag)) {
+ return true;
+ }
+ break;
+ }
+ case 3 /* CDATA */:
+ if (startsWith(s, ']]>')) {
+ return true;
+ }
+ break;
+ }
+ return !s;
+ }
+ function startsWithEndTagOpen(source, tag) {
+ return (startsWith(source, '</') &&
+ source.substr(2, tag.length).toLowerCase() === tag.toLowerCase() &&
+ /[\t\r\n\f />]/.test(source[2 + tag.length] || '>'));
+ }
+
+ function hoistStatic(root, context) {
+ walk(root, context,
+ // Root node is unfortunately non-hoistable due to potential parent
+ // fallthrough attributes.
+ isSingleElementRoot(root, root.children[0]));
+ }
+ function isSingleElementRoot(root, child) {
+ const { children } = root;
+ return (children.length === 1 &&
+ child.type === 1 /* ELEMENT */ &&
+ !isSlotOutlet(child));
+ }
+ function walk(node, context, doNotHoistNode = false) {
+ let hasHoistedNode = false;
+ // Some transforms, e.g. transformAssetUrls from @vue/compiler-sfc, replaces
+ // static bindings with expressions. These expressions are guaranteed to be
+ // constant so they are still eligible for hoisting, but they are only
+ // available at runtime and therefore cannot be evaluated ahead of time.
+ // This is only a concern for pre-stringification (via transformHoist by
+ // @vue/compiler-dom), but doing it here allows us to perform only one full
+ // walk of the AST and allow `stringifyStatic` to stop walking as soon as its
+ // stringficiation threshold is met.
+ let canStringify = true;
+ const { children } = node;
+ for (let i = 0; i < children.length; i++) {
+ const child = children[i];
+ // only plain elements & text calls are eligible for hoisting.
+ if (child.type === 1 /* ELEMENT */ &&
+ child.tagType === 0 /* ELEMENT */) {
+ const constantType = doNotHoistNode
+ ? 0 /* NOT_CONSTANT */
+ : getConstantType(child, context);
+ if (constantType > 0 /* NOT_CONSTANT */) {
+ if (constantType < 3 /* CAN_STRINGIFY */) {
+ canStringify = false;
+ }
+ if (constantType >= 2 /* CAN_HOIST */) {
+ child.codegenNode.patchFlag =
+ -1 /* HOISTED */ + ( ` /* HOISTED */` );
+ child.codegenNode = context.hoist(child.codegenNode);
+ hasHoistedNode = true;
+ continue;
+ }
+ }
+ else {
+ // node may contain dynamic children, but its props may be eligible for
+ // hoisting.
+ const codegenNode = child.codegenNode;
+ if (codegenNode.type === 13 /* VNODE_CALL */) {
+ const flag = getPatchFlag(codegenNode);
+ if ((!flag ||
+ flag === 512 /* NEED_PATCH */ ||
+ flag === 1 /* TEXT */) &&
+ getGeneratedPropsConstantType(child, context) >=
+ 2 /* CAN_HOIST */) {
+ const props = getNodeProps(child);
+ if (props) {
+ codegenNode.props = context.hoist(props);
+ }
+ }
+ }
+ }
+ }
+ else if (child.type === 12 /* TEXT_CALL */) {
+ const contentType = getConstantType(child.content, context);
+ if (contentType > 0) {
+ if (contentType < 3 /* CAN_STRINGIFY */) {
+ canStringify = false;
+ }
+ if (contentType >= 2 /* CAN_HOIST */) {
+ child.codegenNode = context.hoist(child.codegenNode);
+ hasHoistedNode = true;
+ }
+ }
+ }
+ // walk further
+ if (child.type === 1 /* ELEMENT */) {
+ walk(child, context);
+ }
+ else if (child.type === 11 /* FOR */) {
+ // Do not hoist v-for single child because it has to be a block
+ walk(child, context, child.children.length === 1);
+ }
+ else if (child.type === 9 /* IF */) {
+ for (let i = 0; i < child.branches.length; i++) {
+ // Do not hoist v-if single child because it has to be a block
+ walk(child.branches[i], context, child.branches[i].children.length === 1);
+ }
+ }
+ }
+ if (canStringify && hasHoistedNode && context.transformHoist) {
+ context.transformHoist(children, context, node);
+ }
+ }
+ function getConstantType(node, context) {
+ const { constantCache } = context;
+ switch (node.type) {
+ case 1 /* ELEMENT */:
+ if (node.tagType !== 0 /* ELEMENT */) {
+ return 0 /* NOT_CONSTANT */;
+ }
+ const cached = constantCache.get(node);
+ if (cached !== undefined) {
+ return cached;
+ }
+ const codegenNode = node.codegenNode;
+ if (codegenNode.type !== 13 /* VNODE_CALL */) {
+ return 0 /* NOT_CONSTANT */;
+ }
+ const flag = getPatchFlag(codegenNode);
+ if (!flag) {
+ let returnType = 3 /* CAN_STRINGIFY */;
+ // Element itself has no patch flag. However we still need to check:
+ // 1. Even for a node with no patch flag, it is possible for it to contain
+ // non-hoistable expressions that refers to scope variables, e.g. compiler
+ // injected keys or cached event handlers. Therefore we need to always
+ // check the codegenNode's props to be sure.
+ const generatedPropsType = getGeneratedPropsConstantType(node, context);
+ if (generatedPropsType === 0 /* NOT_CONSTANT */) {
+ constantCache.set(node, 0 /* NOT_CONSTANT */);
+ return 0 /* NOT_CONSTANT */;
+ }
+ if (generatedPropsType < returnType) {
+ returnType = generatedPropsType;
+ }
+ // 2. its children.
+ for (let i = 0; i < node.children.length; i++) {
+ const childType = getConstantType(node.children[i], context);
+ if (childType === 0 /* NOT_CONSTANT */) {
+ constantCache.set(node, 0 /* NOT_CONSTANT */);
+ return 0 /* NOT_CONSTANT */;
+ }
+ if (childType < returnType) {
+ returnType = childType;
+ }
+ }
+ // 3. if the type is not already CAN_SKIP_PATCH which is the lowest non-0
+ // type, check if any of the props can cause the type to be lowered
+ // we can skip can_patch because it's guaranteed by the absence of a
+ // patchFlag.
+ if (returnType > 1 /* CAN_SKIP_PATCH */) {
+ for (let i = 0; i < node.props.length; i++) {
+ const p = node.props[i];
+ if (p.type === 7 /* DIRECTIVE */ && p.name === 'bind' && p.exp) {
+ const expType = getConstantType(p.exp, context);
+ if (expType === 0 /* NOT_CONSTANT */) {
+ constantCache.set(node, 0 /* NOT_CONSTANT */);
+ return 0 /* NOT_CONSTANT */;
+ }
+ if (expType < returnType) {
+ returnType = expType;
+ }
+ }
+ }
+ }
+ // only svg/foreignObject could be block here, however if they are
+ // static then they don't need to be blocks since there will be no
+ // nested updates.
+ if (codegenNode.isBlock) {
+ codegenNode.isBlock = false;
+ context.helper(CREATE_VNODE);
+ }
+ constantCache.set(node, returnType);
+ return returnType;
+ }
+ else {
+ constantCache.set(node, 0 /* NOT_CONSTANT */);
+ return 0 /* NOT_CONSTANT */;
+ }
+ case 2 /* TEXT */:
+ case 3 /* COMMENT */:
+ return 3 /* CAN_STRINGIFY */;
+ case 9 /* IF */:
+ case 11 /* FOR */:
+ case 10 /* IF_BRANCH */:
+ return 0 /* NOT_CONSTANT */;
+ case 5 /* INTERPOLATION */:
+ case 12 /* TEXT_CALL */:
+ return getConstantType(node.content, context);
+ case 4 /* SIMPLE_EXPRESSION */:
+ return node.constType;
+ case 8 /* COMPOUND_EXPRESSION */:
+ let returnType = 3 /* CAN_STRINGIFY */;
+ for (let i = 0; i < node.children.length; i++) {
+ const child = node.children[i];
+ if (isString(child) || isSymbol(child)) {
+ continue;
+ }
+ const childType = getConstantType(child, context);
+ if (childType === 0 /* NOT_CONSTANT */) {
+ return 0 /* NOT_CONSTANT */;
+ }
+ else if (childType < returnType) {
+ returnType = childType;
+ }
+ }
+ return returnType;
+ default:
+ return 0 /* NOT_CONSTANT */;
+ }
+ }
+ function getGeneratedPropsConstantType(node, context) {
+ let returnType = 3 /* CAN_STRINGIFY */;
+ const props = getNodeProps(node);
+ if (props && props.type === 15 /* JS_OBJECT_EXPRESSION */) {
+ const { properties } = props;
+ for (let i = 0; i < properties.length; i++) {
+ const { key, value } = properties[i];
+ const keyType = getConstantType(key, context);
+ if (keyType === 0 /* NOT_CONSTANT */) {
+ return keyType;
+ }
+ if (keyType < returnType) {
+ returnType = keyType;
+ }
+ if (value.type !== 4 /* SIMPLE_EXPRESSION */) {
+ return 0 /* NOT_CONSTANT */;
+ }
+ const valueType = getConstantType(value, context);
+ if (valueType === 0 /* NOT_CONSTANT */) {
+ return valueType;
+ }
+ if (valueType < returnType) {
+ returnType = valueType;
+ }
+ }
+ }
+ return returnType;
+ }
+ function getNodeProps(node) {
+ const codegenNode = node.codegenNode;
+ if (codegenNode.type === 13 /* VNODE_CALL */) {
+ return codegenNode.props;
+ }
+ }
+ function getPatchFlag(node) {
+ const flag = node.patchFlag;
+ return flag ? parseInt(flag, 10) : undefined;
+ }
+
+ function createTransformContext(root, { filename = '', prefixIdentifiers = false, hoistStatic = false, cacheHandlers = false, nodeTransforms = [], directiveTransforms = {}, transformHoist = null, isBuiltInComponent = NOOP, isCustomElement = NOOP, expressionPlugins = [], scopeId = null, ssr = false, ssrCssVars = ``, bindingMetadata = EMPTY_OBJ, inline = false, isTS = false, onError = defaultOnError }) {
+ const nameMatch = filename.replace(/\?.*$/, '').match(/([^/\\]+)\.\w+$/);
+ const context = {
+ // options
+ selfName: nameMatch && capitalize(camelize(nameMatch[1])),
+ prefixIdentifiers,
+ hoistStatic,
+ cacheHandlers,
+ nodeTransforms,
+ directiveTransforms,
+ transformHoist,
+ isBuiltInComponent,
+ isCustomElement,
+ expressionPlugins,
+ scopeId,
+ ssr,
+ ssrCssVars,
+ bindingMetadata,
+ inline,
+ isTS,
+ onError,
+ // state
+ root,
+ helpers: new Set(),
+ components: new Set(),
+ directives: new Set(),
+ hoists: [],
+ imports: new Set(),
+ constantCache: new Map(),
+ temps: 0,
+ cached: 0,
+ identifiers: Object.create(null),
+ scopes: {
+ vFor: 0,
+ vSlot: 0,
+ vPre: 0,
+ vOnce: 0
+ },
+ parent: null,
+ currentNode: root,
+ childIndex: 0,
+ // methods
+ helper(name) {
+ context.helpers.add(name);
+ return name;
+ },
+ helperString(name) {
+ return `_${helperNameMap[context.helper(name)]}`;
+ },
+ replaceNode(node) {
+ /* istanbul ignore if */
+ {
+ if (!context.currentNode) {
+ throw new Error(`Node being replaced is already removed.`);
+ }
+ if (!context.parent) {
+ throw new Error(`Cannot replace root node.`);
+ }
+ }
+ context.parent.children[context.childIndex] = context.currentNode = node;
+ },
+ removeNode(node) {
+ if ( !context.parent) {
+ throw new Error(`Cannot remove root node.`);
+ }
+ const list = context.parent.children;
+ const removalIndex = node
+ ? list.indexOf(node)
+ : context.currentNode
+ ? context.childIndex
+ : -1;
+ /* istanbul ignore if */
+ if ( removalIndex < 0) {
+ throw new Error(`node being removed is not a child of current parent`);
+ }
+ if (!node || node === context.currentNode) {
+ // current node removed
+ context.currentNode = null;
+ context.onNodeRemoved();
+ }
+ else {
+ // sibling node removed
+ if (context.childIndex > removalIndex) {
+ context.childIndex--;
+ context.onNodeRemoved();
+ }
+ }
+ context.parent.children.splice(removalIndex, 1);
+ },
+ onNodeRemoved: () => { },
+ addIdentifiers(exp) {
+ },
+ removeIdentifiers(exp) {
+ },
+ hoist(exp) {
+ context.hoists.push(exp);
+ const identifier = createSimpleExpression(`_hoisted_${context.hoists.length}`, false, exp.loc, 2 /* CAN_HOIST */);
+ identifier.hoisted = exp;
+ return identifier;
+ },
+ cache(exp, isVNode = false) {
+ return createCacheExpression(++context.cached, exp, isVNode);
+ }
+ };
+ return context;
+ }
+ function transform(root, options) {
+ const context = createTransformContext(root, options);
+ traverseNode(root, context);
+ if (options.hoistStatic) {
+ hoistStatic(root, context);
+ }
+ if (!options.ssr) {
+ createRootCodegen(root, context);
+ }
+ // finalize meta information
+ root.helpers = [...context.helpers];
+ root.components = [...context.components];
+ root.directives = [...context.directives];
+ root.imports = [...context.imports];
+ root.hoists = context.hoists;
+ root.temps = context.temps;
+ root.cached = context.cached;
+ }
+ function createRootCodegen(root, context) {
+ const { helper } = context;
+ const { children } = root;
+ if (children.length === 1) {
+ const child = children[0];
+ // if the single child is an element, turn it into a block.
+ if (isSingleElementRoot(root, child) && child.codegenNode) {
+ // single element root is never hoisted so codegenNode will never be
+ // SimpleExpressionNode
+ const codegenNode = child.codegenNode;
+ if (codegenNode.type === 13 /* VNODE_CALL */) {
+ codegenNode.isBlock = true;
+ helper(OPEN_BLOCK);
+ helper(CREATE_BLOCK);
+ }
+ root.codegenNode = codegenNode;
+ }
+ else {
+ // - single <slot/>, IfNode, ForNode: already blocks.
+ // - single text node: always patched.
+ // root codegen falls through via genNode()
+ root.codegenNode = child;
+ }
+ }
+ else if (children.length > 1) {
+ // root has multiple nodes - return a fragment block.
+ let patchFlag = 64 /* STABLE_FRAGMENT */;
+ let patchFlagText = PatchFlagNames[64 /* STABLE_FRAGMENT */];
+ // check if the fragment actually contains a single valid child with
+ // the rest being comments
+ if (
+ children.filter(c => c.type !== 3 /* COMMENT */).length === 1) {
+ patchFlag |= 2048 /* DEV_ROOT_FRAGMENT */;
+ patchFlagText += `, ${PatchFlagNames[2048 /* DEV_ROOT_FRAGMENT */]}`;
+ }
+ root.codegenNode = createVNodeCall(context, helper(FRAGMENT), undefined, root.children, patchFlag + ( ` /* ${patchFlagText} */` ), undefined, undefined, true);
+ }
+ else ;
+ }
+ function traverseChildren(parent, context) {
+ let i = 0;
+ const nodeRemoved = () => {
+ i--;
+ };
+ for (; i < parent.children.length; i++) {
+ const child = parent.children[i];
+ if (isString(child))
+ continue;
+ context.parent = parent;
+ context.childIndex = i;
+ context.onNodeRemoved = nodeRemoved;
+ traverseNode(child, context);
+ }
+ }
+ function traverseNode(node, context) {
+ context.currentNode = node;
+ // apply transform plugins
+ const { nodeTransforms } = context;
+ const exitFns = [];
+ for (let i = 0; i < nodeTransforms.length; i++) {
+ const onExit = nodeTransforms[i](node, context);
+ if (onExit) {
+ if (isArray(onExit)) {
+ exitFns.push(...onExit);
+ }
+ else {
+ exitFns.push(onExit);
+ }
+ }
+ if (!context.currentNode) {
+ // node was removed
+ return;
+ }
+ else {
+ // node may have been replaced
+ node = context.currentNode;
+ }
+ }
+ switch (node.type) {
+ case 3 /* COMMENT */:
+ if (!context.ssr) {
+ // inject import for the Comment symbol, which is needed for creating
+ // comment nodes with `createVNode`
+ context.helper(CREATE_COMMENT);
+ }
+ break;
+ case 5 /* INTERPOLATION */:
+ // no need to traverse, but we need to inject toString helper
+ if (!context.ssr) {
+ context.helper(TO_DISPLAY_STRING);
+ }
+ break;
+ // for container types, further traverse downwards
+ case 9 /* IF */:
+ for (let i = 0; i < node.branches.length; i++) {
+ traverseNode(node.branches[i], context);
+ }
+ break;
+ case 10 /* IF_BRANCH */:
+ case 11 /* FOR */:
+ case 1 /* ELEMENT */:
+ case 0 /* ROOT */:
+ traverseChildren(node, context);
+ break;
+ }
+ // exit transforms
+ context.currentNode = node;
+ let i = exitFns.length;
+ while (i--) {
+ exitFns[i]();
+ }
+ }
+ function createStructuralDirectiveTransform(name, fn) {
+ const matches = isString(name)
+ ? (n) => n === name
+ : (n) => name.test(n);
+ return (node, context) => {
+ if (node.type === 1 /* ELEMENT */) {
+ const { props } = node;
+ // structural directive transforms are not concerned with slots
+ // as they are handled separately in vSlot.ts
+ if (node.tagType === 3 /* TEMPLATE */ && props.some(isVSlot)) {
+ return;
+ }
+ const exitFns = [];
+ for (let i = 0; i < props.length; i++) {
+ const prop = props[i];
+ if (prop.type === 7 /* DIRECTIVE */ && matches(prop.name)) {
+ // structural directives are removed to avoid infinite recursion
+ // also we remove them *before* applying so that it can further
+ // traverse itself in case it moves the node around
+ props.splice(i, 1);
+ i--;
+ const onExit = fn(node, prop, context);
+ if (onExit)
+ exitFns.push(onExit);
+ }
+ }
+ return exitFns;
+ }
+ };
+ }
+
+ const PURE_ANNOTATION = `/*#__PURE__*/`;
+ function createCodegenContext(ast, { mode = 'function', prefixIdentifiers = mode === 'module', sourceMap = false, filename = `template.vue.html`, scopeId = null, optimizeImports = false, runtimeGlobalName = `Vue`, runtimeModuleName = `vue`, ssr = false }) {
+ const context = {
+ mode,
+ prefixIdentifiers,
+ sourceMap,
+ filename,
+ scopeId,
+ optimizeImports,
+ runtimeGlobalName,
+ runtimeModuleName,
+ ssr,
+ source: ast.loc.source,
+ code: ``,
+ column: 1,
+ line: 1,
+ offset: 0,
+ indentLevel: 0,
+ pure: false,
+ map: undefined,
+ helper(key) {
+ return `_${helperNameMap[key]}`;
+ },
+ push(code, node) {
+ context.code += code;
+ },
+ indent() {
+ newline(++context.indentLevel);
+ },
+ deindent(withoutNewLine = false) {
+ if (withoutNewLine) {
+ --context.indentLevel;
+ }
+ else {
+ newline(--context.indentLevel);
+ }
+ },
+ newline() {
+ newline(context.indentLevel);
+ }
+ };
+ function newline(n) {
+ context.push('\n' + ` `.repeat(n));
+ }
+ return context;
+ }
+ function generate(ast, options = {}) {
+ const context = createCodegenContext(ast, options);
+ if (options.onContextCreated)
+ options.onContextCreated(context);
+ const { mode, push, prefixIdentifiers, indent, deindent, newline, scopeId, ssr } = context;
+ const hasHelpers = ast.helpers.length > 0;
+ const useWithBlock = !prefixIdentifiers && mode !== 'module';
+ // preambles
+ // in setup() inline mode, the preamble is generated in a sub context
+ // and returned separately.
+ const preambleContext = context;
+ {
+ genFunctionPreamble(ast, preambleContext);
+ }
+ // enter render function
+ const functionName = ssr ? `ssrRender` : `render`;
+ const args = ssr ? ['_ctx', '_push', '_parent', '_attrs'] : ['_ctx', '_cache'];
+ const signature = args.join(', ');
+ {
+ push(`function ${functionName}(${signature}) {`);
+ }
+ indent();
+ if (useWithBlock) {
+ push(`with (_ctx) {`);
+ indent();
+ // function mode const declarations should be inside with block
+ // also they should be renamed to avoid collision with user properties
+ if (hasHelpers) {
+ push(`const { ${ast.helpers
+ .map(s => `${helperNameMap[s]}: _${helperNameMap[s]}`)
+ .join(', ')} } = _Vue`);
+ push(`\n`);
+ newline();
+ }
+ }
+ // generate asset resolution statements
+ if (ast.components.length) {
+ genAssets(ast.components, 'component', context);
+ if (ast.directives.length || ast.temps > 0) {
+ newline();
+ }
+ }
+ if (ast.directives.length) {
+ genAssets(ast.directives, 'directive', context);
+ if (ast.temps > 0) {
+ newline();
+ }
+ }
+ if (ast.temps > 0) {
+ push(`let `);
+ for (let i = 0; i < ast.temps; i++) {
+ push(`${i > 0 ? `, ` : ``}_temp${i}`);
+ }
+ }
+ if (ast.components.length || ast.directives.length || ast.temps) {
+ push(`\n`);
+ newline();
+ }
+ // generate the VNode tree expression
+ if (!ssr) {
+ push(`return `);
+ }
+ if (ast.codegenNode) {
+ genNode(ast.codegenNode, context);
+ }
+ else {
+ push(`null`);
+ }
+ if (useWithBlock) {
+ deindent();
+ push(`}`);
+ }
+ deindent();
+ push(`}`);
+ return {
+ ast,
+ code: context.code,
+ preamble: ``,
+ // SourceMapGenerator does have toJSON() method but it's not in the types
+ map: context.map ? context.map.toJSON() : undefined
+ };
+ }
+ function genFunctionPreamble(ast, context) {
+ const { ssr, prefixIdentifiers, push, newline, runtimeModuleName, runtimeGlobalName } = context;
+ const VueBinding = runtimeGlobalName;
+ const aliasHelper = (s) => `${helperNameMap[s]}: _${helperNameMap[s]}`;
+ // Generate const declaration for helpers
+ // In prefix mode, we place the const declaration at top so it's done
+ // only once; But if we not prefixing, we place the declaration inside the
+ // with block so it doesn't incur the `in` check cost for every helper access.
+ if (ast.helpers.length > 0) {
+ {
+ // "with" mode.
+ // save Vue in a separate variable to avoid collision
+ push(`const _Vue = ${VueBinding}\n`);
+ // in "with" mode, helpers are declared inside the with block to avoid
+ // has check cost, but hoists are lifted out of the function - we need
+ // to provide the helper here.
+ if (ast.hoists.length) {
+ const staticHelpers = [
+ CREATE_VNODE,
+ CREATE_COMMENT,
+ CREATE_TEXT,
+ CREATE_STATIC
+ ]
+ .filter(helper => ast.helpers.includes(helper))
+ .map(aliasHelper)
+ .join(', ');
+ push(`const { ${staticHelpers} } = _Vue\n`);
+ }
+ }
+ }
+ genHoists(ast.hoists, context);
+ newline();
+ push(`return `);
+ }
+ function genAssets(assets, type, { helper, push, newline }) {
+ const resolver = helper(type === 'component' ? RESOLVE_COMPONENT : RESOLVE_DIRECTIVE);
+ for (let i = 0; i < assets.length; i++) {
+ const id = assets[i];
+ push(`const ${toValidAssetId(id, type)} = ${resolver}(${JSON.stringify(id)})`);
+ if (i < assets.length - 1) {
+ newline();
+ }
+ }
+ }
+ function genHoists(hoists, context) {
+ if (!hoists.length) {
+ return;
+ }
+ context.pure = true;
+ const { push, newline, helper, scopeId, mode } = context;
+ newline();
+ hoists.forEach((exp, i) => {
+ if (exp) {
+ push(`const _hoisted_${i + 1} = `);
+ genNode(exp, context);
+ newline();
+ }
+ });
+ context.pure = false;
+ }
+ function isText$1(n) {
+ return (isString(n) ||
+ n.type === 4 /* SIMPLE_EXPRESSION */ ||
+ n.type === 2 /* TEXT */ ||
+ n.type === 5 /* INTERPOLATION */ ||
+ n.type === 8 /* COMPOUND_EXPRESSION */);
+ }
+ function genNodeListAsArray(nodes, context) {
+ const multilines = nodes.length > 3 ||
+ ( nodes.some(n => isArray(n) || !isText$1(n)));
+ context.push(`[`);
+ multilines && context.indent();
+ genNodeList(nodes, context, multilines);
+ multilines && context.deindent();
+ context.push(`]`);
+ }
+ function genNodeList(nodes, context, multilines = false, comma = true) {
+ const { push, newline } = context;
+ for (let i = 0; i < nodes.length; i++) {
+ const node = nodes[i];
+ if (isString(node)) {
+ push(node);
+ }
+ else if (isArray(node)) {
+ genNodeListAsArray(node, context);
+ }
+ else {
+ genNode(node, context);
+ }
+ if (i < nodes.length - 1) {
+ if (multilines) {
+ comma && push(',');
+ newline();
+ }
+ else {
+ comma && push(', ');
+ }
+ }
+ }
+ }
+ function genNode(node, context) {
+ if (isString(node)) {
+ context.push(node);
+ return;
+ }
+ if (isSymbol(node)) {
+ context.push(context.helper(node));
+ return;
+ }
+ switch (node.type) {
+ case 1 /* ELEMENT */:
+ case 9 /* IF */:
+ case 11 /* FOR */:
+
+ assert(node.codegenNode != null, `Codegen node is missing for element/if/for node. ` +
+ `Apply appropriate transforms first.`);
+ genNode(node.codegenNode, context);
+ break;
+ case 2 /* TEXT */:
+ genText(node, context);
+ break;
+ case 4 /* SIMPLE_EXPRESSION */:
+ genExpression(node, context);
+ break;
+ case 5 /* INTERPOLATION */:
+ genInterpolation(node, context);
+ break;
+ case 12 /* TEXT_CALL */:
+ genNode(node.codegenNode, context);
+ break;
+ case 8 /* COMPOUND_EXPRESSION */:
+ genCompoundExpression(node, context);
+ break;
+ case 3 /* COMMENT */:
+ genComment(node, context);
+ break;
+ case 13 /* VNODE_CALL */:
+ genVNodeCall(node, context);
+ break;
+ case 14 /* JS_CALL_EXPRESSION */:
+ genCallExpression(node, context);
+ break;
+ case 15 /* JS_OBJECT_EXPRESSION */:
+ genObjectExpression(node, context);
+ break;
+ case 17 /* JS_ARRAY_EXPRESSION */:
+ genArrayExpression(node, context);
+ break;
+ case 18 /* JS_FUNCTION_EXPRESSION */:
+ genFunctionExpression(node, context);
+ break;
+ case 19 /* JS_CONDITIONAL_EXPRESSION */:
+ genConditionalExpression(node, context);
+ break;
+ case 20 /* JS_CACHE_EXPRESSION */:
+ genCacheExpression(node, context);
+ break;
+ // SSR only types
+ case 21 /* JS_BLOCK_STATEMENT */:
+ break;
+ case 22 /* JS_TEMPLATE_LITERAL */:
+ break;
+ case 23 /* JS_IF_STATEMENT */:
+ break;
+ case 24 /* JS_ASSIGNMENT_EXPRESSION */:
+ break;
+ case 25 /* JS_SEQUENCE_EXPRESSION */:
+ break;
+ case 26 /* JS_RETURN_STATEMENT */:
+ break;
+ /* istanbul ignore next */
+ case 10 /* IF_BRANCH */:
+ // noop
+ break;
+ default:
+ {
+ assert(false, `unhandled codegen node type: ${node.type}`);
+ // make sure we exhaust all possible types
+ const exhaustiveCheck = node;
+ return exhaustiveCheck;
+ }
+ }
+ }
+ function genText(node, context) {
+ context.push(JSON.stringify(node.content), node);
+ }
+ function genExpression(node, context) {
+ const { content, isStatic } = node;
+ context.push(isStatic ? JSON.stringify(content) : content, node);
+ }
+ function genInterpolation(node, context) {
+ const { push, helper, pure } = context;
+ if (pure)
+ push(PURE_ANNOTATION);
+ push(`${helper(TO_DISPLAY_STRING)}(`);
+ genNode(node.content, context);
+ push(`)`);
+ }
+ function genCompoundExpression(node, context) {
+ for (let i = 0; i < node.children.length; i++) {
+ const child = node.children[i];
+ if (isString(child)) {
+ context.push(child);
+ }
+ else {
+ genNode(child, context);
+ }
+ }
+ }
+ function genExpressionAsPropertyKey(node, context) {
+ const { push } = context;
+ if (node.type === 8 /* COMPOUND_EXPRESSION */) {
+ push(`[`);
+ genCompoundExpression(node, context);
+ push(`]`);
+ }
+ else if (node.isStatic) {
+ // only quote keys if necessary
+ const text = isSimpleIdentifier(node.content)
+ ? node.content
+ : JSON.stringify(node.content);
+ push(text, node);
+ }
+ else {
+ push(`[${node.content}]`, node);
+ }
+ }
+ function genComment(node, context) {
+ {
+ const { push, helper, pure } = context;
+ if (pure) {
+ push(PURE_ANNOTATION);
+ }
+ push(`${helper(CREATE_COMMENT)}(${JSON.stringify(node.content)})`, node);
+ }
+ }
+ function genVNodeCall(node, context) {
+ const { push, helper, pure } = context;
+ const { tag, props, children, patchFlag, dynamicProps, directives, isBlock, disableTracking } = node;
+ if (directives) {
+ push(helper(WITH_DIRECTIVES) + `(`);
+ }
+ if (isBlock) {
+ push(`(${helper(OPEN_BLOCK)}(${disableTracking ? `true` : ``}), `);
+ }
+ if (pure) {
+ push(PURE_ANNOTATION);
+ }
+ push(helper(isBlock ? CREATE_BLOCK : CREATE_VNODE) + `(`, node);
+ genNodeList(genNullableArgs([tag, props, children, patchFlag, dynamicProps]), context);
+ push(`)`);
+ if (isBlock) {
+ push(`)`);
+ }
+ if (directives) {
+ push(`, `);
+ genNode(directives, context);
+ push(`)`);
+ }
+ }
+ function genNullableArgs(args) {
+ let i = args.length;
+ while (i--) {
+ if (args[i] != null)
+ break;
+ }
+ return args.slice(0, i + 1).map(arg => arg || `null`);
+ }
+ // JavaScript
+ function genCallExpression(node, context) {
+ const { push, helper, pure } = context;
+ const callee = isString(node.callee) ? node.callee : helper(node.callee);
+ if (pure) {
+ push(PURE_ANNOTATION);
+ }
+ push(callee + `(`, node);
+ genNodeList(node.arguments, context);
+ push(`)`);
+ }
+ function genObjectExpression(node, context) {
+ const { push, indent, deindent, newline } = context;
+ const { properties } = node;
+ if (!properties.length) {
+ push(`{}`, node);
+ return;
+ }
+ const multilines = properties.length > 1 ||
+ (
+ properties.some(p => p.value.type !== 4 /* SIMPLE_EXPRESSION */));
+ push(multilines ? `{` : `{ `);
+ multilines && indent();
+ for (let i = 0; i < properties.length; i++) {
+ const { key, value } = properties[i];
+ // key
+ genExpressionAsPropertyKey(key, context);
+ push(`: `);
+ // value
+ genNode(value, context);
+ if (i < properties.length - 1) {
+ // will only reach this if it's multilines
+ push(`,`);
+ newline();
+ }
+ }
+ multilines && deindent();
+ push(multilines ? `}` : ` }`);
+ }
+ function genArrayExpression(node, context) {
+ genNodeListAsArray(node.elements, context);
+ }
+ function genFunctionExpression(node, context) {
+ const { push, indent, deindent, scopeId, mode } = context;
+ const { params, returns, body, newline, isSlot } = node;
+ if (isSlot) {
+ push(`_${helperNameMap[WITH_CTX]}(`);
+ }
+ push(`(`, node);
+ if (isArray(params)) {
+ genNodeList(params, context);
+ }
+ else if (params) {
+ genNode(params, context);
+ }
+ push(`) => `);
+ if (newline || body) {
+ push(`{`);
+ indent();
+ }
+ if (returns) {
+ if (newline) {
+ push(`return `);
+ }
+ if (isArray(returns)) {
+ genNodeListAsArray(returns, context);
+ }
+ else {
+ genNode(returns, context);
+ }
+ }
+ else if (body) {
+ genNode(body, context);
+ }
+ if (newline || body) {
+ deindent();
+ push(`}`);
+ }
+ if ( isSlot) {
+ push(`)`);
+ }
+ }
+ function genConditionalExpression(node, context) {
+ const { test, consequent, alternate, newline: needNewline } = node;
+ const { push, indent, deindent, newline } = context;
+ if (test.type === 4 /* SIMPLE_EXPRESSION */) {
+ const needsParens = !isSimpleIdentifier(test.content);
+ needsParens && push(`(`);
+ genExpression(test, context);
+ needsParens && push(`)`);
+ }
+ else {
+ push(`(`);
+ genNode(test, context);
+ push(`)`);
+ }
+ needNewline && indent();
+ context.indentLevel++;
+ needNewline || push(` `);
+ push(`? `);
+ genNode(consequent, context);
+ context.indentLevel--;
+ needNewline && newline();
+ needNewline || push(` `);
+ push(`: `);
+ const isNested = alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */;
+ if (!isNested) {
+ context.indentLevel++;
+ }
+ genNode(alternate, context);
+ if (!isNested) {
+ context.indentLevel--;
+ }
+ needNewline && deindent(true /* without newline */);
+ }
+ function genCacheExpression(node, context) {
+ const { push, helper, indent, deindent, newline } = context;
+ push(`_cache[${node.index}] || (`);
+ if (node.isVNode) {
+ indent();
+ push(`${helper(SET_BLOCK_TRACKING)}(-1),`);
+ newline();
+ }
+ push(`_cache[${node.index}] = `);
+ genNode(node.value, context);
+ if (node.isVNode) {
+ push(`,`);
+ newline();
+ push(`${helper(SET_BLOCK_TRACKING)}(1),`);
+ newline();
+ push(`_cache[${node.index}]`);
+ deindent();
+ }
+ push(`)`);
+ }
+
+ // these keywords should not appear inside expressions, but operators like
+ // typeof, instanceof and in are allowed
+ const prohibitedKeywordRE = new RegExp('\\b' +
+ ('do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
+ 'super,throw,while,yield,delete,export,import,return,switch,default,' +
+ 'extends,finally,continue,debugger,function,arguments,typeof,void')
+ .split(',')
+ .join('\\b|\\b') +
+ '\\b');
+ // strip strings in expressions
+ const stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;
+ /**
+ * Validate a non-prefixed expression.
+ * This is only called when using the in-browser runtime compiler since it
+ * doesn't prefix expressions.
+ */
+ function validateBrowserExpression(node, context, asParams = false, asRawStatements = false) {
+ const exp = node.content;
+ // empty expressions are validated per-directive since some directives
+ // do allow empty expressions.
+ if (!exp.trim()) {
+ return;
+ }
+ try {
+ new Function(asRawStatements
+ ? ` ${exp} `
+ : `return ${asParams ? `(${exp}) => {}` : `(${exp})`}`);
+ }
+ catch (e) {
+ let message = e.message;
+ const keywordMatch = exp
+ .replace(stripStringRE, '')
+ .match(prohibitedKeywordRE);
+ if (keywordMatch) {
+ message = `avoid using JavaScript keyword as property name: "${keywordMatch[0]}"`;
+ }
+ context.onError(createCompilerError(43 /* X_INVALID_EXPRESSION */, node.loc, undefined, message));
+ }
+ }
+
+ const transformExpression = (node, context) => {
+ if (node.type === 5 /* INTERPOLATION */) {
+ node.content = processExpression(node.content, context);
+ }
+ else if (node.type === 1 /* ELEMENT */) {
+ // handle directives on element
+ for (let i = 0; i < node.props.length; i++) {
+ const dir = node.props[i];
+ // do not process for v-on & v-for since they are special handled
+ if (dir.type === 7 /* DIRECTIVE */ && dir.name !== 'for') {
+ const exp = dir.exp;
+ const arg = dir.arg;
+ // do not process exp if this is v-on:arg - we need special handling
+ // for wrapping inline statements.
+ if (exp &&
+ exp.type === 4 /* SIMPLE_EXPRESSION */ &&
+ !(dir.name === 'on' && arg)) {
+ dir.exp = processExpression(exp, context,
+ // slot args must be processed as function params
+ dir.name === 'slot');
+ }
+ if (arg && arg.type === 4 /* SIMPLE_EXPRESSION */ && !arg.isStatic) {
+ dir.arg = processExpression(arg, context);
+ }
+ }
+ }
+ }
+ };
+ // Important: since this function uses Node.js only dependencies, it should
+ // always be used with a leading !true check so that it can be
+ // tree-shaken from the browser build.
+ function processExpression(node, context,
+ // some expressions like v-slot props & v-for aliases should be parsed as
+ // function params
+ asParams = false,
+ // v-on handler values may contain multiple statements
+ asRawStatements = false) {
+ {
+ {
+ // simple in-browser validation (same logic in 2.x)
+ validateBrowserExpression(node, context, asParams, asRawStatements);
+ }
+ return node;
+ }
+ }
+
+ const transformIf = createStructuralDirectiveTransform(/^(if|else|else-if)$/, (node, dir, context) => {
+ return processIf(node, dir, context, (ifNode, branch, isRoot) => {
+ // #1587: We need to dynamically increment the key based on the current
+ // node's sibling nodes, since chained v-if/else branches are
+ // rendered at the same depth
+ const siblings = context.parent.children;
+ let i = siblings.indexOf(ifNode);
+ let key = 0;
+ while (i-- >= 0) {
+ const sibling = siblings[i];
+ if (sibling && sibling.type === 9 /* IF */) {
+ key += sibling.branches.length;
+ }
+ }
+ // Exit callback. Complete the codegenNode when all children have been
+ // transformed.
+ return () => {
+ if (isRoot) {
+ ifNode.codegenNode = createCodegenNodeForBranch(branch, key, context);
+ }
+ else {
+ // attach this branch's codegen node to the v-if root.
+ const parentCondition = getParentCondition(ifNode.codegenNode);
+ parentCondition.alternate = createCodegenNodeForBranch(branch, key + ifNode.branches.length - 1, context);
+ }
+ };
+ });
+ });
+ // target-agnostic transform used for both Client and SSR
+ function processIf(node, dir, context, processCodegen) {
+ if (dir.name !== 'else' &&
+ (!dir.exp || !dir.exp.content.trim())) {
+ const loc = dir.exp ? dir.exp.loc : node.loc;
+ context.onError(createCompilerError(27 /* X_V_IF_NO_EXPRESSION */, dir.loc));
+ dir.exp = createSimpleExpression(`true`, false, loc);
+ }
+ if ( dir.exp) {
+ validateBrowserExpression(dir.exp, context);
+ }
+ if (dir.name === 'if') {
+ const branch = createIfBranch(node, dir);
+ const ifNode = {
+ type: 9 /* IF */,
+ loc: node.loc,
+ branches: [branch]
+ };
+ context.replaceNode(ifNode);
+ if (processCodegen) {
+ return processCodegen(ifNode, branch, true);
+ }
+ }
+ else {
+ // locate the adjacent v-if
+ const siblings = context.parent.children;
+ const comments = [];
+ let i = siblings.indexOf(node);
+ while (i-- >= -1) {
+ const sibling = siblings[i];
+ if ( sibling && sibling.type === 3 /* COMMENT */) {
+ context.removeNode(sibling);
+ comments.unshift(sibling);
+ continue;
+ }
+ if (sibling &&
+ sibling.type === 2 /* TEXT */ &&
+ !sibling.content.trim().length) {
+ context.removeNode(sibling);
+ continue;
+ }
+ if (sibling && sibling.type === 9 /* IF */) {
+ // move the node to the if node's branches
+ context.removeNode();
+ const branch = createIfBranch(node, dir);
+ if ( comments.length) {
+ branch.children = [...comments, ...branch.children];
+ }
+ // check if user is forcing same key on different branches
+ {
+ const key = branch.userKey;
+ if (key) {
+ sibling.branches.forEach(({ userKey }) => {
+ if (isSameKey(userKey, key)) {
+ context.onError(createCompilerError(28 /* X_V_IF_SAME_KEY */, branch.userKey.loc));
+ }
+ });
+ }
+ }
+ sibling.branches.push(branch);
+ const onExit = processCodegen && processCodegen(sibling, branch, false);
+ // since the branch was removed, it will not be traversed.
+ // make sure to traverse here.
+ traverseNode(branch, context);
+ // call on exit
+ if (onExit)
+ onExit();
+ // make sure to reset currentNode after traversal to indicate this
+ // node has been removed.
+ context.currentNode = null;
+ }
+ else {
+ context.onError(createCompilerError(29 /* X_V_ELSE_NO_ADJACENT_IF */, node.loc));
+ }
+ break;
+ }
+ }
+ }
+ function createIfBranch(node, dir) {
+ return {
+ type: 10 /* IF_BRANCH */,
+ loc: node.loc,
+ condition: dir.name === 'else' ? undefined : dir.exp,
+ children: node.tagType === 3 /* TEMPLATE */ && !findDir(node, 'for')
+ ? node.children
+ : [node],
+ userKey: findProp(node, `key`)
+ };
+ }
+ function createCodegenNodeForBranch(branch, keyIndex, context) {
+ if (branch.condition) {
+ return createConditionalExpression(branch.condition, createChildrenCodegenNode(branch, keyIndex, context),
+ // make sure to pass in asBlock: true so that the comment node call
+ // closes the current block.
+ createCallExpression(context.helper(CREATE_COMMENT), [
+ '"v-if"' ,
+ 'true'
+ ]));
+ }
+ else {
+ return createChildrenCodegenNode(branch, keyIndex, context);
+ }
+ }
+ function createChildrenCodegenNode(branch, keyIndex, context) {
+ const { helper } = context;
+ const keyProperty = createObjectProperty(`key`, createSimpleExpression(`${keyIndex}`, false, locStub, 2 /* CAN_HOIST */));
+ const { children } = branch;
+ const firstChild = children[0];
+ const needFragmentWrapper = children.length !== 1 || firstChild.type !== 1 /* ELEMENT */;
+ if (needFragmentWrapper) {
+ if (children.length === 1 && firstChild.type === 11 /* FOR */) {
+ // optimize away nested fragments when child is a ForNode
+ const vnodeCall = firstChild.codegenNode;
+ injectProp(vnodeCall, keyProperty, context);
+ return vnodeCall;
+ }
+ else {
+ return createVNodeCall(context, helper(FRAGMENT), createObjectExpression([keyProperty]), children, 64 /* STABLE_FRAGMENT */ +
+ ( ` /* ${PatchFlagNames[64 /* STABLE_FRAGMENT */]} */`
+ ), undefined, undefined, true, false, branch.loc);
+ }
+ }
+ else {
+ const vnodeCall = firstChild
+ .codegenNode;
+ // Change createVNode to createBlock.
+ if (vnodeCall.type === 13 /* VNODE_CALL */) {
+ vnodeCall.isBlock = true;
+ helper(OPEN_BLOCK);
+ helper(CREATE_BLOCK);
+ }
+ // inject branch key
+ injectProp(vnodeCall, keyProperty, context);
+ return vnodeCall;
+ }
+ }
+ function isSameKey(a, b) {
+ if (!a || a.type !== b.type) {
+ return false;
+ }
+ if (a.type === 6 /* ATTRIBUTE */) {
+ if (a.value.content !== b.value.content) {
+ return false;
+ }
+ }
+ else {
+ // directive
+ const exp = a.exp;
+ const branchExp = b.exp;
+ if (exp.type !== branchExp.type) {
+ return false;
+ }
+ if (exp.type !== 4 /* SIMPLE_EXPRESSION */ ||
+ (exp.isStatic !== branchExp.isStatic ||
+ exp.content !== branchExp.content)) {
+ return false;
+ }
+ }
+ return true;
+ }
+ function getParentCondition(node) {
+ while (true) {
+ if (node.type === 19 /* JS_CONDITIONAL_EXPRESSION */) {
+ if (node.alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */) {
+ node = node.alternate;
+ }
+ else {
+ return node;
+ }
+ }
+ else if (node.type === 20 /* JS_CACHE_EXPRESSION */) {
+ node = node.value;
+ }
+ }
+ }
+
+ const transformFor = createStructuralDirectiveTransform('for', (node, dir, context) => {
+ const { helper } = context;
+ return processFor(node, dir, context, forNode => {
+ // create the loop render function expression now, and add the
+ // iterator on exit after all children have been traversed
+ const renderExp = createCallExpression(helper(RENDER_LIST), [
+ forNode.source
+ ]);
+ const keyProp = findProp(node, `key`);
+ const keyProperty = keyProp
+ ? createObjectProperty(`key`, keyProp.type === 6 /* ATTRIBUTE */
+ ? createSimpleExpression(keyProp.value.content, true)
+ : keyProp.exp)
+ : null;
+ const isStableFragment = forNode.source.type === 4 /* SIMPLE_EXPRESSION */ &&
+ forNode.source.constType > 0;
+ const fragmentFlag = isStableFragment
+ ? 64 /* STABLE_FRAGMENT */
+ : keyProp
+ ? 128 /* KEYED_FRAGMENT */
+ : 256 /* UNKEYED_FRAGMENT */;
+ forNode.codegenNode = createVNodeCall(context, helper(FRAGMENT), undefined, renderExp, fragmentFlag +
+ ( ` /* ${PatchFlagNames[fragmentFlag]} */` ), undefined, undefined, true /* isBlock */, !isStableFragment /* disableTracking */, node.loc);
+ return () => {
+ // finish the codegen now that all children have been traversed
+ let childBlock;
+ const isTemplate = isTemplateNode(node);
+ const { children } = forNode;
+ // check <template v-for> key placement
+ if ( isTemplate) {
+ node.children.some(c => {
+ if (c.type === 1 /* ELEMENT */) {
+ const key = findProp(c, 'key');
+ if (key) {
+ context.onError(createCompilerError(32 /* X_V_FOR_TEMPLATE_KEY_PLACEMENT */, key.loc));
+ return true;
+ }
+ }
+ });
+ }
+ const needFragmentWrapper = children.length !== 1 || children[0].type !== 1 /* ELEMENT */;
+ const slotOutlet = isSlotOutlet(node)
+ ? node
+ : isTemplate &&
+ node.children.length === 1 &&
+ isSlotOutlet(node.children[0])
+ ? node.children[0] // api-extractor somehow fails to infer this
+ : null;
+ if (slotOutlet) {
+ // <slot v-for="..."> or <template v-for="..."><slot/></template>
+ childBlock = slotOutlet.codegenNode;
+ if (isTemplate && keyProperty) {
+ // <template v-for="..." :key="..."><slot/></template>
+ // we need to inject the key to the renderSlot() call.
+ // the props for renderSlot is passed as the 3rd argument.
+ injectProp(childBlock, keyProperty, context);
+ }
+ }
+ else if (needFragmentWrapper) {
+ // <template v-for="..."> with text or multi-elements
+ // should generate a fragment block for each loop
+ childBlock = createVNodeCall(context, helper(FRAGMENT), keyProperty ? createObjectExpression([keyProperty]) : undefined, node.children, 64 /* STABLE_FRAGMENT */ +
+ ( ` /* ${PatchFlagNames[64 /* STABLE_FRAGMENT */]} */`
+ ), undefined, undefined, true);
+ }
+ else {
+ // Normal element v-for. Directly use the child's codegenNode
+ // but mark it as a block.
+ childBlock = children[0]
+ .codegenNode;
+ if (isTemplate && keyProperty) {
+ injectProp(childBlock, keyProperty, context);
+ }
+ childBlock.isBlock = !isStableFragment;
+ if (childBlock.isBlock) {
+ helper(OPEN_BLOCK);
+ helper(CREATE_BLOCK);
+ }
+ else {
+ helper(CREATE_VNODE);
+ }
+ }
+ renderExp.arguments.push(createFunctionExpression(createForLoopParams(forNode.parseResult), childBlock, true /* force newline */));
+ };
+ });
+ });
+ // target-agnostic transform used for both Client and SSR
+ function processFor(node, dir, context, processCodegen) {
+ if (!dir.exp) {
+ context.onError(createCompilerError(30 /* X_V_FOR_NO_EXPRESSION */, dir.loc));
+ return;
+ }
+ const parseResult = parseForExpression(
+ // can only be simple expression because vFor transform is applied
+ // before expression transform.
+ dir.exp, context);
+ if (!parseResult) {
+ context.onError(createCompilerError(31 /* X_V_FOR_MALFORMED_EXPRESSION */, dir.loc));
+ return;
+ }
+ const { addIdentifiers, removeIdentifiers, scopes } = context;
+ const { source, value, key, index } = parseResult;
+ const forNode = {
+ type: 11 /* FOR */,
+ loc: dir.loc,
+ source,
+ valueAlias: value,
+ keyAlias: key,
+ objectIndexAlias: index,
+ parseResult,
+ children: isTemplateNode(node) ? node.children : [node]
+ };
+ context.replaceNode(forNode);
+ // bookkeeping
+ scopes.vFor++;
+ const onExit = processCodegen && processCodegen(forNode);
+ return () => {
+ scopes.vFor--;
+ if (onExit)
+ onExit();
+ };
+ }
+ const forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
+ // This regex doesn't cover the case if key or index aliases have destructuring,
+ // but those do not make sense in the first place, so this works in practice.
+ const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
+ const stripParensRE = /^\(|\)$/g;
+ function parseForExpression(input, context) {
+ const loc = input.loc;
+ const exp = input.content;
+ const inMatch = exp.match(forAliasRE);
+ if (!inMatch)
+ return;
+ const [, LHS, RHS] = inMatch;
+ const result = {
+ source: createAliasExpression(loc, RHS.trim(), exp.indexOf(RHS, LHS.length)),
+ value: undefined,
+ key: undefined,
+ index: undefined
+ };
+ {
+ validateBrowserExpression(result.source, context);
+ }
+ let valueContent = LHS.trim()
+ .replace(stripParensRE, '')
+ .trim();
+ const trimmedOffset = LHS.indexOf(valueContent);
+ const iteratorMatch = valueContent.match(forIteratorRE);
+ if (iteratorMatch) {
+ valueContent = valueContent.replace(forIteratorRE, '').trim();
+ const keyContent = iteratorMatch[1].trim();
+ let keyOffset;
+ if (keyContent) {
+ keyOffset = exp.indexOf(keyContent, trimmedOffset + valueContent.length);
+ result.key = createAliasExpression(loc, keyContent, keyOffset);
+ {
+ validateBrowserExpression(result.key, context, true);
+ }
+ }
+ if (iteratorMatch[2]) {
+ const indexContent = iteratorMatch[2].trim();
+ if (indexContent) {
+ result.index = createAliasExpression(loc, indexContent, exp.indexOf(indexContent, result.key
+ ? keyOffset + keyContent.length
+ : trimmedOffset + valueContent.length));
+ {
+ validateBrowserExpression(result.index, context, true);
+ }
+ }
+ }
+ }
+ if (valueContent) {
+ result.value = createAliasExpression(loc, valueContent, trimmedOffset);
+ {
+ validateBrowserExpression(result.value, context, true);
+ }
+ }
+ return result;
+ }
+ function createAliasExpression(range, content, offset) {
+ return createSimpleExpression(content, false, getInnerRange(range, offset, content.length));
+ }
+ function createForLoopParams({ value, key, index }) {
+ const params = [];
+ if (value) {
+ params.push(value);
+ }
+ if (key) {
+ if (!value) {
+ params.push(createSimpleExpression(`_`, false));
+ }
+ params.push(key);
+ }
+ if (index) {
+ if (!key) {
+ if (!value) {
+ params.push(createSimpleExpression(`_`, false));
+ }
+ params.push(createSimpleExpression(`__`, false));
+ }
+ params.push(index);
+ }
+ return params;
+ }
+
+ const defaultFallback = createSimpleExpression(`undefined`, false);
+ // A NodeTransform that:
+ // 1. Tracks scope identifiers for scoped slots so that they don't get prefixed
+ // by transformExpression. This is only applied in non-browser builds with
+ // { prefixIdentifiers: true }.
+ // 2. Track v-slot depths so that we know a slot is inside another slot.
+ // Note the exit callback is executed before buildSlots() on the same node,
+ // so only nested slots see positive numbers.
+ const trackSlotScopes = (node, context) => {
+ if (node.type === 1 /* ELEMENT */ &&
+ (node.tagType === 1 /* COMPONENT */ ||
+ node.tagType === 3 /* TEMPLATE */)) {
+ // We are only checking non-empty v-slot here
+ // since we only care about slots that introduce scope variables.
+ const vSlot = findDir(node, 'slot');
+ if (vSlot) {
+ const slotProps = vSlot.exp;
+ context.scopes.vSlot++;
+ return () => {
+ context.scopes.vSlot--;
+ };
+ }
+ }
+ };
+ const buildClientSlotFn = (props, children, loc) => createFunctionExpression(props, children, false /* newline */, true /* isSlot */, children.length ? children[0].loc : loc);
+ // Instead of being a DirectiveTransform, v-slot processing is called during
+ // transformElement to build the slots object for a component.
+ function buildSlots(node, context, buildSlotFn = buildClientSlotFn) {
+ context.helper(WITH_CTX);
+ const { children, loc } = node;
+ const slotsProperties = [];
+ const dynamicSlots = [];
+ const buildDefaultSlotProperty = (props, children) => createObjectProperty(`default`, buildSlotFn(props, children, loc));
+ // If the slot is inside a v-for or another v-slot, force it to be dynamic
+ // since it likely uses a scope variable.
+ let hasDynamicSlots = context.scopes.vSlot > 0 || context.scopes.vFor > 0;
+ // 1. Check for slot with slotProps on component itself.
+ // <Comp v-slot="{ prop }"/>
+ const onComponentSlot = findDir(node, 'slot', true);
+ if (onComponentSlot) {
+ const { arg, exp } = onComponentSlot;
+ if (arg && !isStaticExp(arg)) {
+ hasDynamicSlots = true;
+ }
+ slotsProperties.push(createObjectProperty(arg || createSimpleExpression('default', true), buildSlotFn(exp, children, loc)));
+ }
+ // 2. Iterate through children and check for template slots
+ // <template v-slot:foo="{ prop }">
+ let hasTemplateSlots = false;
+ let hasNamedDefaultSlot = false;
+ const implicitDefaultChildren = [];
+ const seenSlotNames = new Set();
+ for (let i = 0; i < children.length; i++) {
+ const slotElement = children[i];
+ let slotDir;
+ if (!isTemplateNode(slotElement) ||
+ !(slotDir = findDir(slotElement, 'slot', true))) {
+ // not a <template v-slot>, skip.
+ if (slotElement.type !== 3 /* COMMENT */) {
+ implicitDefaultChildren.push(slotElement);
+ }
+ continue;
+ }
+ if (onComponentSlot) {
+ // already has on-component slot - this is incorrect usage.
+ context.onError(createCompilerError(36 /* X_V_SLOT_MIXED_SLOT_USAGE */, slotDir.loc));
+ break;
+ }
+ hasTemplateSlots = true;
+ const { children: slotChildren, loc: slotLoc } = slotElement;
+ const { arg: slotName = createSimpleExpression(`default`, true), exp: slotProps, loc: dirLoc } = slotDir;
+ // check if name is dynamic.
+ let staticSlotName;
+ if (isStaticExp(slotName)) {
+ staticSlotName = slotName ? slotName.content : `default`;
+ }
+ else {
+ hasDynamicSlots = true;
+ }
+ const slotFunction = buildSlotFn(slotProps, slotChildren, slotLoc);
+ // check if this slot is conditional (v-if/v-for)
+ let vIf;
+ let vElse;
+ let vFor;
+ if ((vIf = findDir(slotElement, 'if'))) {
+ hasDynamicSlots = true;
+ dynamicSlots.push(createConditionalExpression(vIf.exp, buildDynamicSlot(slotName, slotFunction), defaultFallback));
+ }
+ else if ((vElse = findDir(slotElement, /^else(-if)?$/, true /* allowEmpty */))) {
+ // find adjacent v-if
+ let j = i;
+ let prev;
+ while (j--) {
+ prev = children[j];
+ if (prev.type !== 3 /* COMMENT */) {
+ break;
+ }
+ }
+ if (prev && isTemplateNode(prev) && findDir(prev, 'if')) {
+ // remove node
+ children.splice(i, 1);
+ i--;
+ // attach this slot to previous conditional
+ let conditional = dynamicSlots[dynamicSlots.length - 1];
+ while (conditional.alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */) {
+ conditional = conditional.alternate;
+ }
+ conditional.alternate = vElse.exp
+ ? createConditionalExpression(vElse.exp, buildDynamicSlot(slotName, slotFunction), defaultFallback)
+ : buildDynamicSlot(slotName, slotFunction);
+ }
+ else {
+ context.onError(createCompilerError(29 /* X_V_ELSE_NO_ADJACENT_IF */, vElse.loc));
+ }
+ }
+ else if ((vFor = findDir(slotElement, 'for'))) {
+ hasDynamicSlots = true;
+ const parseResult = vFor.parseResult ||
+ parseForExpression(vFor.exp, context);
+ if (parseResult) {
+ // Render the dynamic slots as an array and add it to the createSlot()
+ // args. The runtime knows how to handle it appropriately.
+ dynamicSlots.push(createCallExpression(context.helper(RENDER_LIST), [
+ parseResult.source,
+ createFunctionExpression(createForLoopParams(parseResult), buildDynamicSlot(slotName, slotFunction), true /* force newline */)
+ ]));
+ }
+ else {
+ context.onError(createCompilerError(31 /* X_V_FOR_MALFORMED_EXPRESSION */, vFor.loc));
+ }
+ }
+ else {
+ // check duplicate static names
+ if (staticSlotName) {
+ if (seenSlotNames.has(staticSlotName)) {
+ context.onError(createCompilerError(37 /* X_V_SLOT_DUPLICATE_SLOT_NAMES */, dirLoc));
+ continue;
+ }
+ seenSlotNames.add(staticSlotName);
+ if (staticSlotName === 'default') {
+ hasNamedDefaultSlot = true;
+ }
+ }
+ slotsProperties.push(createObjectProperty(slotName, slotFunction));
+ }
+ }
+ if (!onComponentSlot) {
+ if (!hasTemplateSlots) {
+ // implicit default slot (on component)
+ slotsProperties.push(buildDefaultSlotProperty(undefined, children));
+ }
+ else if (implicitDefaultChildren.length) {
+ // implicit default slot (mixed with named slots)
+ if (hasNamedDefaultSlot) {
+ context.onError(createCompilerError(38 /* X_V_SLOT_EXTRANEOUS_DEFAULT_SLOT_CHILDREN */, implicitDefaultChildren[0].loc));
+ }
+ else {
+ slotsProperties.push(buildDefaultSlotProperty(undefined, implicitDefaultChildren));
+ }
+ }
+ }
+ const slotFlag = hasDynamicSlots
+ ? 2 /* DYNAMIC */
+ : hasForwardedSlots(node.children)
+ ? 3 /* FORWARDED */
+ : 1 /* STABLE */;
+ let slots = createObjectExpression(slotsProperties.concat(createObjectProperty(`_`,
+ // 2 = compiled but dynamic = can skip normalization, but must run diff
+ // 1 = compiled and static = can skip normalization AND diff as optimized
+ createSimpleExpression(slotFlag + ( ` /* ${slotFlagsText[slotFlag]} */` ), false))), loc);
+ if (dynamicSlots.length) {
+ slots = createCallExpression(context.helper(CREATE_SLOTS), [
+ slots,
+ createArrayExpression(dynamicSlots)
+ ]);
+ }
+ return {
+ slots,
+ hasDynamicSlots
+ };
+ }
+ function buildDynamicSlot(name, fn) {
+ return createObjectExpression([
+ createObjectProperty(`name`, name),
+ createObjectProperty(`fn`, fn)
+ ]);
+ }
+ function hasForwardedSlots(children) {
+ for (let i = 0; i < children.length; i++) {
+ const child = children[i];
+ if (child.type === 1 /* ELEMENT */) {
+ if (child.tagType === 2 /* SLOT */ ||
+ (child.tagType === 0 /* ELEMENT */ &&
+ hasForwardedSlots(child.children))) {
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
+ // some directive transforms (e.g. v-model) may return a symbol for runtime
+ // import, which should be used instead of a resolveDirective call.
+ const directiveImportMap = new WeakMap();
+ // generate a JavaScript AST for this element's codegen
+ const transformElement = (node, context) => {
+ if (!(node.type === 1 /* ELEMENT */ &&
+ (node.tagType === 0 /* ELEMENT */ ||
+ node.tagType === 1 /* COMPONENT */))) {
+ return;
+ }
+ // perform the work on exit, after all child expressions have been
+ // processed and merged.
+ return function postTransformElement() {
+ const { tag, props } = node;
+ const isComponent = node.tagType === 1 /* COMPONENT */;
+ // The goal of the transform is to create a codegenNode implementing the
+ // VNodeCall interface.
+ const vnodeTag = isComponent
+ ? resolveComponentType(node, context)
+ : `"${tag}"`;
+ const isDynamicComponent = isObject(vnodeTag) && vnodeTag.callee === RESOLVE_DYNAMIC_COMPONENT;
+ let vnodeProps;
+ let vnodeChildren;
+ let vnodePatchFlag;
+ let patchFlag = 0;
+ let vnodeDynamicProps;
+ let dynamicPropNames;
+ let vnodeDirectives;
+ let shouldUseBlock =
+ // dynamic component may resolve to plain elements
+ isDynamicComponent ||
+ vnodeTag === TELEPORT ||
+ vnodeTag === SUSPENSE ||
+ (!isComponent &&
+ // <svg> and <foreignObject> must be forced into blocks so that block
+ // updates inside get proper isSVG flag at runtime. (#639, #643)
+ // This is technically web-specific, but splitting the logic out of core
+ // leads to too much unnecessary complexity.
+ (tag === 'svg' ||
+ tag === 'foreignObject' ||
+ // #938: elements with dynamic keys should be forced into blocks
+ findProp(node, 'key', true)));
+ // props
+ if (props.length > 0) {
+ const propsBuildResult = buildProps(node, context);
+ vnodeProps = propsBuildResult.props;
+ patchFlag = propsBuildResult.patchFlag;
+ dynamicPropNames = propsBuildResult.dynamicPropNames;
+ const directives = propsBuildResult.directives;
+ vnodeDirectives =
+ directives && directives.length
+ ? createArrayExpression(directives.map(dir => buildDirectiveArgs(dir, context)))
+ : undefined;
+ }
+ // children
+ if (node.children.length > 0) {
+ if (vnodeTag === KEEP_ALIVE) {
+ // Although a built-in component, we compile KeepAlive with raw children
+ // instead of slot functions so that it can be used inside Transition
+ // or other Transition-wrapping HOCs.
+ // To ensure correct updates with block optimizations, we need to:
+ // 1. Force keep-alive into a block. This avoids its children being
+ // collected by a parent block.
+ shouldUseBlock = true;
+ // 2. Force keep-alive to always be updated, since it uses raw children.
+ patchFlag |= 1024 /* DYNAMIC_SLOTS */;
+ if ( node.children.length > 1) {
+ context.onError(createCompilerError(44 /* X_KEEP_ALIVE_INVALID_CHILDREN */, {
+ start: node.children[0].loc.start,
+ end: node.children[node.children.length - 1].loc.end,
+ source: ''
+ }));
+ }
+ }
+ const shouldBuildAsSlots = isComponent &&
+ // Teleport is not a real component and has dedicated runtime handling
+ vnodeTag !== TELEPORT &&
+ // explained above.
+ vnodeTag !== KEEP_ALIVE;
+ if (shouldBuildAsSlots) {
+ const { slots, hasDynamicSlots } = buildSlots(node, context);
+ vnodeChildren = slots;
+ if (hasDynamicSlots) {
+ patchFlag |= 1024 /* DYNAMIC_SLOTS */;
+ }
+ }
+ else if (node.children.length === 1 && vnodeTag !== TELEPORT) {
+ const child = node.children[0];
+ const type = child.type;
+ // check for dynamic text children
+ const hasDynamicTextChild = type === 5 /* INTERPOLATION */ ||
+ type === 8 /* COMPOUND_EXPRESSION */;
+ if (hasDynamicTextChild &&
+ getConstantType(child, context) === 0 /* NOT_CONSTANT */) {
+ patchFlag |= 1 /* TEXT */;
+ }
+ // pass directly if the only child is a text node
+ // (plain / interpolation / expression)
+ if (hasDynamicTextChild || type === 2 /* TEXT */) {
+ vnodeChildren = child;
+ }
+ else {
+ vnodeChildren = node.children;
+ }
+ }
+ else {
+ vnodeChildren = node.children;
+ }
+ }
+ // patchFlag & dynamicPropNames
+ if (patchFlag !== 0) {
+ {
+ if (patchFlag < 0) {
+ // special flags (negative and mutually exclusive)
+ vnodePatchFlag = patchFlag + ` /* ${PatchFlagNames[patchFlag]} */`;
+ }
+ else {
+ // bitwise flags
+ const flagNames = Object.keys(PatchFlagNames)
+ .map(Number)
+ .filter(n => n > 0 && patchFlag & n)
+ .map(n => PatchFlagNames[n])
+ .join(`, `);
+ vnodePatchFlag = patchFlag + ` /* ${flagNames} */`;
+ }
+ }
+ if (dynamicPropNames && dynamicPropNames.length) {
+ vnodeDynamicProps = stringifyDynamicPropNames(dynamicPropNames);
+ }
+ }
+ node.codegenNode = createVNodeCall(context, vnodeTag, vnodeProps, vnodeChildren, vnodePatchFlag, vnodeDynamicProps, vnodeDirectives, !!shouldUseBlock, false /* disableTracking */, node.loc);
+ };
+ };
+ function resolveComponentType(node, context, ssr = false) {
+ const { tag } = node;
+ // 1. dynamic component
+ const isProp = node.tag === 'component' ? findProp(node, 'is') : findDir(node, 'is');
+ if (isProp) {
+ const exp = isProp.type === 6 /* ATTRIBUTE */
+ ? isProp.value && createSimpleExpression(isProp.value.content, true)
+ : isProp.exp;
+ if (exp) {
+ return createCallExpression(context.helper(RESOLVE_DYNAMIC_COMPONENT), [
+ exp
+ ]);
+ }
+ }
+ // 2. built-in components (Teleport, Transition, KeepAlive, Suspense...)
+ const builtIn = isCoreComponent(tag) || context.isBuiltInComponent(tag);
+ if (builtIn) {
+ // built-ins are simply fallthroughs / have special handling during ssr
+ // so we don't need to import their runtime equivalents
+ if (!ssr)
+ context.helper(builtIn);
+ return builtIn;
+ }
+ // 5. user component (resolve)
+ context.helper(RESOLVE_COMPONENT);
+ context.components.add(tag);
+ return toValidAssetId(tag, `component`);
+ }
+ function buildProps(node, context, props = node.props, ssr = false) {
+ const { tag, loc: elementLoc } = node;
+ const isComponent = node.tagType === 1 /* COMPONENT */;
+ let properties = [];
+ const mergeArgs = [];
+ const runtimeDirectives = [];
+ // patchFlag analysis
+ let patchFlag = 0;
+ let hasRef = false;
+ let hasClassBinding = false;
+ let hasStyleBinding = false;
+ let hasHydrationEventBinding = false;
+ let hasDynamicKeys = false;
+ let hasVnodeHook = false;
+ const dynamicPropNames = [];
+ const analyzePatchFlag = ({ key, value }) => {
+ if (isStaticExp(key)) {
+ const name = key.content;
+ const isEventHandler = isOn(name);
+ if (!isComponent &&
+ isEventHandler &&
+ // omit the flag for click handlers because hydration gives click
+ // dedicated fast path.
+ name.toLowerCase() !== 'onclick' &&
+ // omit v-model handlers
+ name !== 'onUpdate:modelValue' &&
+ // omit onVnodeXXX hooks
+ !isReservedProp(name)) {
+ hasHydrationEventBinding = true;
+ }
+ if (isEventHandler && isReservedProp(name)) {
+ hasVnodeHook = true;
+ }
+ if (value.type === 20 /* JS_CACHE_EXPRESSION */ ||
+ ((value.type === 4 /* SIMPLE_EXPRESSION */ ||
+ value.type === 8 /* COMPOUND_EXPRESSION */) &&
+ getConstantType(value, context) > 0)) {
+ // skip if the prop is a cached handler or has constant value
+ return;
+ }
+ if (name === 'ref') {
+ hasRef = true;
+ }
+ else if (name === 'class' && !isComponent) {
+ hasClassBinding = true;
+ }
+ else if (name === 'style' && !isComponent) {
+ hasStyleBinding = true;
+ }
+ else if (name !== 'key' && !dynamicPropNames.includes(name)) {
+ dynamicPropNames.push(name);
+ }
+ }
+ else {
+ hasDynamicKeys = true;
+ }
+ };
+ for (let i = 0; i < props.length; i++) {
+ // static attribute
+ const prop = props[i];
+ if (prop.type === 6 /* ATTRIBUTE */) {
+ const { loc, name, value } = prop;
+ let isStatic = true;
+ if (name === 'ref') {
+ hasRef = true;
+ }
+ // skip :is on <component>
+ if (name === 'is' && tag === 'component') {
+ continue;
+ }
+ properties.push(createObjectProperty(createSimpleExpression(name, true, getInnerRange(loc, 0, name.length)), createSimpleExpression(value ? value.content : '', isStatic, value ? value.loc : loc)));
+ }
+ else {
+ // directives
+ const { name, arg, exp, loc } = prop;
+ const isBind = name === 'bind';
+ const isOn = name === 'on';
+ // skip v-slot - it is handled by its dedicated transform.
+ if (name === 'slot') {
+ if (!isComponent) {
+ context.onError(createCompilerError(39 /* X_V_SLOT_MISPLACED */, loc));
+ }
+ continue;
+ }
+ // skip v-once - it is handled by its dedicated transform.
+ if (name === 'once') {
+ continue;
+ }
+ // skip v-is and :is on <component>
+ if (name === 'is' ||
+ (isBind && tag === 'component' && isBindKey(arg, 'is'))) {
+ continue;
+ }
+ // skip v-on in SSR compilation
+ if (isOn && ssr) {
+ continue;
+ }
+ // special case for v-bind and v-on with no argument
+ if (!arg && (isBind || isOn)) {
+ hasDynamicKeys = true;
+ if (exp) {
+ if (properties.length) {
+ mergeArgs.push(createObjectExpression(dedupeProperties(properties), elementLoc));
+ properties = [];
+ }
+ if (isBind) {
+ mergeArgs.push(exp);
+ }
+ else {
+ // v-on="obj" -> toHandlers(obj)
+ mergeArgs.push({
+ type: 14 /* JS_CALL_EXPRESSION */,
+ loc,
+ callee: context.helper(TO_HANDLERS),
+ arguments: [exp]
+ });
+ }
+ }
+ else {
+ context.onError(createCompilerError(isBind
+ ? 33 /* X_V_BIND_NO_EXPRESSION */
+ : 34 /* X_V_ON_NO_EXPRESSION */, loc));
+ }
+ continue;
+ }
+ const directiveTransform = context.directiveTransforms[name];
+ if (directiveTransform) {
+ // has built-in directive transform.
+ const { props, needRuntime } = directiveTransform(prop, node, context);
+ !ssr && props.forEach(analyzePatchFlag);
+ properties.push(...props);
+ if (needRuntime) {
+ runtimeDirectives.push(prop);
+ if (isSymbol(needRuntime)) {
+ directiveImportMap.set(prop, needRuntime);
+ }
+ }
+ }
+ else {
+ // no built-in transform, this is a user custom directive.
+ runtimeDirectives.push(prop);
+ }
+ }
+ }
+ let propsExpression = undefined;
+ // has v-bind="object" or v-on="object", wrap with mergeProps
+ if (mergeArgs.length) {
+ if (properties.length) {
+ mergeArgs.push(createObjectExpression(dedupeProperties(properties), elementLoc));
+ }
+ if (mergeArgs.length > 1) {
+ propsExpression = createCallExpression(context.helper(MERGE_PROPS), mergeArgs, elementLoc);
+ }
+ else {
+ // single v-bind with nothing else - no need for a mergeProps call
+ propsExpression = mergeArgs[0];
+ }
+ }
+ else if (properties.length) {
+ propsExpression = createObjectExpression(dedupeProperties(properties), elementLoc);
+ }
+ // patchFlag analysis
+ if (hasDynamicKeys) {
+ patchFlag |= 16 /* FULL_PROPS */;
+ }
+ else {
+ if (hasClassBinding) {
+ patchFlag |= 2 /* CLASS */;
+ }
+ if (hasStyleBinding) {
+ patchFlag |= 4 /* STYLE */;
+ }
+ if (dynamicPropNames.length) {
+ patchFlag |= 8 /* PROPS */;
+ }
+ if (hasHydrationEventBinding) {
+ patchFlag |= 32 /* HYDRATE_EVENTS */;
+ }
+ }
+ if ((patchFlag === 0 || patchFlag === 32 /* HYDRATE_EVENTS */) &&
+ (hasRef || hasVnodeHook || runtimeDirectives.length > 0)) {
+ patchFlag |= 512 /* NEED_PATCH */;
+ }
+ return {
+ props: propsExpression,
+ directives: runtimeDirectives,
+ patchFlag,
+ dynamicPropNames
+ };
+ }
+ // Dedupe props in an object literal.
+ // Literal duplicated attributes would have been warned during the parse phase,
+ // however, it's possible to encounter duplicated `onXXX` handlers with different
+ // modifiers. We also need to merge static and dynamic class / style attributes.
+ // - onXXX handlers / style: merge into array
+ // - class: merge into single expression with concatenation
+ function dedupeProperties(properties) {
+ const knownProps = new Map();
+ const deduped = [];
+ for (let i = 0; i < properties.length; i++) {
+ const prop = properties[i];
+ // dynamic keys are always allowed
+ if (prop.key.type === 8 /* COMPOUND_EXPRESSION */ || !prop.key.isStatic) {
+ deduped.push(prop);
+ continue;
+ }
+ const name = prop.key.content;
+ const existing = knownProps.get(name);
+ if (existing) {
+ if (name === 'style' || name === 'class' || name.startsWith('on')) {
+ mergeAsArray(existing, prop);
+ }
+ // unexpected duplicate, should have emitted error during parse
+ }
+ else {
+ knownProps.set(name, prop);
+ deduped.push(prop);
+ }
+ }
+ return deduped;
+ }
+ function mergeAsArray(existing, incoming) {
+ if (existing.value.type === 17 /* JS_ARRAY_EXPRESSION */) {
+ existing.value.elements.push(incoming.value);
+ }
+ else {
+ existing.value = createArrayExpression([existing.value, incoming.value], existing.loc);
+ }
+ }
+ function buildDirectiveArgs(dir, context) {
+ const dirArgs = [];
+ const runtime = directiveImportMap.get(dir);
+ if (runtime) {
+ // built-in directive with runtime
+ dirArgs.push(context.helperString(runtime));
+ }
+ else {
+ {
+ // inject statement for resolving directive
+ context.helper(RESOLVE_DIRECTIVE);
+ context.directives.add(dir.name);
+ dirArgs.push(toValidAssetId(dir.name, `directive`));
+ }
+ }
+ const { loc } = dir;
+ if (dir.exp)
+ dirArgs.push(dir.exp);
+ if (dir.arg) {
+ if (!dir.exp) {
+ dirArgs.push(`void 0`);
+ }
+ dirArgs.push(dir.arg);
+ }
+ if (Object.keys(dir.modifiers).length) {
+ if (!dir.arg) {
+ if (!dir.exp) {
+ dirArgs.push(`void 0`);
+ }
+ dirArgs.push(`void 0`);
+ }
+ const trueExpression = createSimpleExpression(`true`, false, loc);
+ dirArgs.push(createObjectExpression(dir.modifiers.map(modifier => createObjectProperty(modifier, trueExpression)), loc));
+ }
+ return createArrayExpression(dirArgs, dir.loc);
+ }
+ function stringifyDynamicPropNames(props) {
+ let propsNamesString = `[`;
+ for (let i = 0, l = props.length; i < l; i++) {
+ propsNamesString += JSON.stringify(props[i]);
+ if (i < l - 1)
+ propsNamesString += ', ';
+ }
+ return propsNamesString + `]`;
+ }
+
+ const transformSlotOutlet = (node, context) => {
+ if (isSlotOutlet(node)) {
+ const { children, loc } = node;
+ const { slotName, slotProps } = processSlotOutlet(node, context);
+ const slotArgs = [
+ context.prefixIdentifiers ? `_ctx.$slots` : `$slots`,
+ slotName
+ ];
+ if (slotProps) {
+ slotArgs.push(slotProps);
+ }
+ if (children.length) {
+ if (!slotProps) {
+ slotArgs.push(`{}`);
+ }
+ slotArgs.push(createFunctionExpression([], children, false, false, loc));
+ }
+ node.codegenNode = createCallExpression(context.helper(RENDER_SLOT), slotArgs, loc);
+ }
+ };
+ function processSlotOutlet(node, context) {
+ let slotName = `"default"`;
+ let slotProps = undefined;
+ const nonNameProps = [];
+ for (let i = 0; i < node.props.length; i++) {
+ const p = node.props[i];
+ if (p.type === 6 /* ATTRIBUTE */) {
+ if (p.value) {
+ if (p.name === 'name') {
+ slotName = JSON.stringify(p.value.content);
+ }
+ else {
+ p.name = camelize(p.name);
+ nonNameProps.push(p);
+ }
+ }
+ }
+ else {
+ if (p.name === 'bind' && isBindKey(p.arg, 'name')) {
+ if (p.exp)
+ slotName = p.exp;
+ }
+ else {
+ if (p.name === 'bind' && p.arg && isStaticExp(p.arg)) {
+ p.arg.content = camelize(p.arg.content);
+ }
+ nonNameProps.push(p);
+ }
+ }
+ }
+ if (nonNameProps.length > 0) {
+ const { props, directives } = buildProps(node, context, nonNameProps);
+ slotProps = props;
+ if (directives.length) {
+ context.onError(createCompilerError(35 /* X_V_SLOT_UNEXPECTED_DIRECTIVE_ON_SLOT_OUTLET */, directives[0].loc));
+ }
+ }
+ return {
+ slotName,
+ slotProps
+ };
+ }
+
+ const fnExpRE = /^\s*([\w$_]+|\([^)]*?\))\s*=>|^\s*function(?:\s+[\w$]+)?\s*\(/;
+ const transformOn = (dir, node, context, augmentor) => {
+ const { loc, modifiers, arg } = dir;
+ if (!dir.exp && !modifiers.length) {
+ context.onError(createCompilerError(34 /* X_V_ON_NO_EXPRESSION */, loc));
+ }
+ let eventName;
+ if (arg.type === 4 /* SIMPLE_EXPRESSION */) {
+ if (arg.isStatic) {
+ const rawName = arg.content;
+ // for all event listeners, auto convert it to camelCase. See issue #2249
+ eventName = createSimpleExpression(toHandlerKey(camelize(rawName)), true, arg.loc);
+ }
+ else {
+ // #2388
+ eventName = createCompoundExpression([
+ `${context.helperString(TO_HANDLER_KEY)}(`,
+ arg,
+ `)`
+ ]);
+ }
+ }
+ else {
+ // already a compound expression.
+ eventName = arg;
+ eventName.children.unshift(`${context.helperString(TO_HANDLER_KEY)}(`);
+ eventName.children.push(`)`);
+ }
+ // handler processing
+ let exp = dir.exp;
+ if (exp && !exp.content.trim()) {
+ exp = undefined;
+ }
+ let shouldCache = context.cacheHandlers && !exp;
+ if (exp) {
+ const isMemberExp = isMemberExpression(exp.content);
+ const isInlineStatement = !(isMemberExp || fnExpRE.test(exp.content));
+ const hasMultipleStatements = exp.content.includes(`;`);
+ {
+ validateBrowserExpression(exp, context, false, hasMultipleStatements);
+ }
+ if (isInlineStatement || (shouldCache && isMemberExp)) {
+ // wrap inline statement in a function expression
+ exp = createCompoundExpression([
+ `${isInlineStatement
+ ? `$event`
+ : `${ ``}(...args)`} => ${hasMultipleStatements ? `{` : `(`}`,
+ exp,
+ hasMultipleStatements ? `}` : `)`
+ ]);
+ }
+ }
+ let ret = {
+ props: [
+ createObjectProperty(eventName, exp || createSimpleExpression(`() => {}`, false, loc))
+ ]
+ };
+ // apply extended compiler augmentor
+ if (augmentor) {
+ ret = augmentor(ret);
+ }
+ if (shouldCache) {
+ // cache handlers so that it's always the same handler being passed down.
+ // this avoids unnecessary re-renders when users use inline handlers on
+ // components.
+ ret.props[0].value = context.cache(ret.props[0].value);
+ }
+ return ret;
+ };
+
+ // v-bind without arg is handled directly in ./transformElements.ts due to it affecting
+ // codegen for the entire props object. This transform here is only for v-bind
+ // *with* args.
+ const transformBind = (dir, node, context) => {
+ const { exp, modifiers, loc } = dir;
+ const arg = dir.arg;
+ if (arg.type !== 4 /* SIMPLE_EXPRESSION */) {
+ arg.children.unshift(`(`);
+ arg.children.push(`) || ""`);
+ }
+ else if (!arg.isStatic) {
+ arg.content = `${arg.content} || ""`;
+ }
+ // .prop is no longer necessary due to new patch behavior
+ // .sync is replaced by v-model:arg
+ if (modifiers.includes('camel')) {
+ if (arg.type === 4 /* SIMPLE_EXPRESSION */) {
+ if (arg.isStatic) {
+ arg.content = camelize(arg.content);
+ }
+ else {
+ arg.content = `${context.helperString(CAMELIZE)}(${arg.content})`;
+ }
+ }
+ else {
+ arg.children.unshift(`${context.helperString(CAMELIZE)}(`);
+ arg.children.push(`)`);
+ }
+ }
+ if (!exp ||
+ (exp.type === 4 /* SIMPLE_EXPRESSION */ && !exp.content.trim())) {
+ context.onError(createCompilerError(33 /* X_V_BIND_NO_EXPRESSION */, loc));
+ return {
+ props: [createObjectProperty(arg, createSimpleExpression('', true, loc))]
+ };
+ }
+ return {
+ props: [createObjectProperty(arg, exp)]
+ };
+ };
+
+ // Merge adjacent text nodes and expressions into a single expression
+ // e.g. <div>abc {{ d }} {{ e }}</div> should have a single expression node as child.
+ const transformText = (node, context) => {
+ if (node.type === 0 /* ROOT */ ||
+ node.type === 1 /* ELEMENT */ ||
+ node.type === 11 /* FOR */ ||
+ node.type === 10 /* IF_BRANCH */) {
+ // perform the transform on node exit so that all expressions have already
+ // been processed.
+ return () => {
+ const children = node.children;
+ let currentContainer = undefined;
+ let hasText = false;
+ for (let i = 0; i < children.length; i++) {
+ const child = children[i];
+ if (isText(child)) {
+ hasText = true;
+ for (let j = i + 1; j < children.length; j++) {
+ const next = children[j];
+ if (isText(next)) {
+ if (!currentContainer) {
+ currentContainer = children[i] = {
+ type: 8 /* COMPOUND_EXPRESSION */,
+ loc: child.loc,
+ children: [child]
+ };
+ }
+ // merge adjacent text node into current
+ currentContainer.children.push(` + `, next);
+ children.splice(j, 1);
+ j--;
+ }
+ else {
+ currentContainer = undefined;
+ break;
+ }
+ }
+ }
+ }
+ if (!hasText ||
+ // if this is a plain element with a single text child, leave it
+ // as-is since the runtime has dedicated fast path for this by directly
+ // setting textContent of the element.
+ // for component root it's always normalized anyway.
+ (children.length === 1 &&
+ (node.type === 0 /* ROOT */ ||
+ (node.type === 1 /* ELEMENT */ &&
+ node.tagType === 0 /* ELEMENT */)))) {
+ return;
+ }
+ // pre-convert text nodes into createTextVNode(text) calls to avoid
+ // runtime normalization.
+ for (let i = 0; i < children.length; i++) {
+ const child = children[i];
+ if (isText(child) || child.type === 8 /* COMPOUND_EXPRESSION */) {
+ const callArgs = [];
+ // createTextVNode defaults to single whitespace, so if it is a
+ // single space the code could be an empty call to save bytes.
+ if (child.type !== 2 /* TEXT */ || child.content !== ' ') {
+ callArgs.push(child);
+ }
+ // mark dynamic text with flag so it gets patched inside a block
+ if (!context.ssr &&
+ getConstantType(child, context) === 0 /* NOT_CONSTANT */) {
+ callArgs.push(1 /* TEXT */ +
+ ( ` /* ${PatchFlagNames[1 /* TEXT */]} */` ));
+ }
+ children[i] = {
+ type: 12 /* TEXT_CALL */,
+ content: child,
+ loc: child.loc,
+ codegenNode: createCallExpression(context.helper(CREATE_TEXT), callArgs)
+ };
+ }
+ }
+ };
+ }
+ };
+
+ const seen = new WeakSet();
+ const transformOnce = (node, context) => {
+ if (node.type === 1 /* ELEMENT */ && findDir(node, 'once', true)) {
+ if (seen.has(node)) {
+ return;
+ }
+ seen.add(node);
+ context.helper(SET_BLOCK_TRACKING);
+ return () => {
+ const cur = context.currentNode;
+ if (cur.codegenNode) {
+ cur.codegenNode = context.cache(cur.codegenNode, true /* isVNode */);
+ }
+ };
+ }
+ };
+
+ const transformModel = (dir, node, context) => {
+ const { exp, arg } = dir;
+ if (!exp) {
+ context.onError(createCompilerError(40 /* X_V_MODEL_NO_EXPRESSION */, dir.loc));
+ return createTransformProps();
+ }
+ const rawExp = exp.loc.source;
+ const expString = exp.type === 4 /* SIMPLE_EXPRESSION */ ? exp.content : rawExp;
+ // im SFC <script setup> inline mode, the exp may have been transformed into
+ // _unref(exp)
+ const bindingType = context.bindingMetadata[rawExp];
+ const maybeRef = !true /* SETUP_CONST */;
+ if (!isMemberExpression(expString) && !maybeRef) {
+ context.onError(createCompilerError(41 /* X_V_MODEL_MALFORMED_EXPRESSION */, exp.loc));
+ return createTransformProps();
+ }
+ const propName = arg ? arg : createSimpleExpression('modelValue', true);
+ const eventName = arg
+ ? isStaticExp(arg)
+ ? `onUpdate:${arg.content}`
+ : createCompoundExpression(['"onUpdate:" + ', arg])
+ : `onUpdate:modelValue`;
+ let assignmentExp;
+ const eventArg = context.isTS ? `($event: any)` : `$event`;
+ {
+ assignmentExp = createCompoundExpression([
+ `${eventArg} => (`,
+ exp,
+ ` = $event)`
+ ]);
+ }
+ const props = [
+ // modelValue: foo
+ createObjectProperty(propName, dir.exp),
+ // "onUpdate:modelValue": $event => (foo = $event)
+ createObjectProperty(eventName, assignmentExp)
+ ];
+ // modelModifiers: { foo: true, "bar-baz": true }
+ if (dir.modifiers.length && node.tagType === 1 /* COMPONENT */) {
+ const modifiers = dir.modifiers
+ .map(m => (isSimpleIdentifier(m) ? m : JSON.stringify(m)) + `: true`)
+ .join(`, `);
+ const modifiersKey = arg
+ ? isStaticExp(arg)
+ ? `${arg.content}Modifiers`
+ : createCompoundExpression([arg, ' + "Modifiers"'])
+ : `modelModifiers`;
+ props.push(createObjectProperty(modifiersKey, createSimpleExpression(`{ ${modifiers} }`, false, dir.loc, 2 /* CAN_HOIST */)));
+ }
+ return createTransformProps(props);
+ };
+ function createTransformProps(props = []) {
+ return { props };
+ }
+
+ function getBaseTransformPreset(prefixIdentifiers) {
+ return [
+ [
+ transformOnce,
+ transformIf,
+ transformFor,
+ ...( [transformExpression]
+ ),
+ transformSlotOutlet,
+ transformElement,
+ trackSlotScopes,
+ transformText
+ ],
+ {
+ on: transformOn,
+ bind: transformBind,
+ model: transformModel
+ }
+ ];
+ }
+ // we name it `baseCompile` so that higher order compilers like
+ // @vue/compiler-dom can export `compile` while re-exporting everything else.
+ function baseCompile(template, options = {}) {
+ const onError = options.onError || defaultOnError;
+ const isModuleMode = options.mode === 'module';
+ /* istanbul ignore if */
+ {
+ if (options.prefixIdentifiers === true) {
+ onError(createCompilerError(45 /* X_PREFIX_ID_NOT_SUPPORTED */));
+ }
+ else if (isModuleMode) {
+ onError(createCompilerError(46 /* X_MODULE_MODE_NOT_SUPPORTED */));
+ }
+ }
+ const prefixIdentifiers = !true ;
+ if ( options.cacheHandlers) {
+ onError(createCompilerError(47 /* X_CACHE_HANDLER_NOT_SUPPORTED */));
+ }
+ if (options.scopeId && !isModuleMode) {
+ onError(createCompilerError(48 /* X_SCOPE_ID_NOT_SUPPORTED */));
+ }
+ const ast = isString(template) ? baseParse(template, options) : template;
+ const [nodeTransforms, directiveTransforms] = getBaseTransformPreset();
+ transform(ast, extend({}, options, {
+ prefixIdentifiers,
+ nodeTransforms: [
+ ...nodeTransforms,
+ ...(options.nodeTransforms || []) // user transforms
+ ],
+ directiveTransforms: extend({}, directiveTransforms, options.directiveTransforms || {} // user transforms
+ )
+ }));
+ return generate(ast, extend({}, options, {
+ prefixIdentifiers
+ }));
+ }
+
+ const noopDirectiveTransform = () => ({ props: [] });
+
+ const V_MODEL_RADIO = Symbol( `vModelRadio` );
+ const V_MODEL_CHECKBOX = Symbol( `vModelCheckbox` );
+ const V_MODEL_TEXT = Symbol( `vModelText` );
+ const V_MODEL_SELECT = Symbol( `vModelSelect` );
+ const V_MODEL_DYNAMIC = Symbol( `vModelDynamic` );
+ const V_ON_WITH_MODIFIERS = Symbol( `vOnModifiersGuard` );
+ const V_ON_WITH_KEYS = Symbol( `vOnKeysGuard` );
+ const V_SHOW = Symbol( `vShow` );
+ const TRANSITION$1 = Symbol( `Transition` );
+ const TRANSITION_GROUP = Symbol( `TransitionGroup` );
+ registerRuntimeHelpers({
+ [V_MODEL_RADIO]: `vModelRadio`,
+ [V_MODEL_CHECKBOX]: `vModelCheckbox`,
+ [V_MODEL_TEXT]: `vModelText`,
+ [V_MODEL_SELECT]: `vModelSelect`,
+ [V_MODEL_DYNAMIC]: `vModelDynamic`,
+ [V_ON_WITH_MODIFIERS]: `withModifiers`,
+ [V_ON_WITH_KEYS]: `withKeys`,
+ [V_SHOW]: `vShow`,
+ [TRANSITION$1]: `Transition`,
+ [TRANSITION_GROUP]: `TransitionGroup`
+ });
+
+ /* eslint-disable no-restricted-globals */
+ let decoder;
+ function decodeHtmlBrowser(raw) {
+ (decoder || (decoder = document.createElement('div'))).innerHTML = raw;
+ return decoder.textContent;
+ }
+
+ const isRawTextContainer = /*#__PURE__*/ makeMap('style,iframe,script,noscript', true);
+ const parserOptions = {
+ isVoidTag,
+ isNativeTag: tag => isHTMLTag(tag) || isSVGTag(tag),
+ isPreTag: tag => tag === 'pre',
+ decodeEntities: decodeHtmlBrowser ,
+ isBuiltInComponent: (tag) => {
+ if (isBuiltInType(tag, `Transition`)) {
+ return TRANSITION$1;
+ }
+ else if (isBuiltInType(tag, `TransitionGroup`)) {
+ return TRANSITION_GROUP;
+ }
+ },
+ // https://html.spec.whatwg.org/multipage/parsing.html#tree-construction-dispatcher
+ getNamespace(tag, parent) {
+ let ns = parent ? parent.ns : 0 /* HTML */;
+ if (parent && ns === 2 /* MATH_ML */) {
+ if (parent.tag === 'annotation-xml') {
+ if (tag === 'svg') {
+ return 1 /* SVG */;
+ }
+ if (parent.props.some(a => a.type === 6 /* ATTRIBUTE */ &&
+ a.name === 'encoding' &&
+ a.value != null &&
+ (a.value.content === 'text/html' ||
+ a.value.content === 'application/xhtml+xml'))) {
+ ns = 0 /* HTML */;
+ }
+ }
+ else if (/^m(?:[ions]|text)$/.test(parent.tag) &&
+ tag !== 'mglyph' &&
+ tag !== 'malignmark') {
+ ns = 0 /* HTML */;
+ }
+ }
+ else if (parent && ns === 1 /* SVG */) {
+ if (parent.tag === 'foreignObject' ||
+ parent.tag === 'desc' ||
+ parent.tag === 'title') {
+ ns = 0 /* HTML */;
+ }
+ }
+ if (ns === 0 /* HTML */) {
+ if (tag === 'svg') {
+ return 1 /* SVG */;
+ }
+ if (tag === 'math') {
+ return 2 /* MATH_ML */;
+ }
+ }
+ return ns;
+ },
+ // https://html.spec.whatwg.org/multipage/parsing.html#parsing-html-fragments
+ getTextMode({ tag, ns }) {
+ if (ns === 0 /* HTML */) {
+ if (tag === 'textarea' || tag === 'title') {
+ return 1 /* RCDATA */;
+ }
+ if (isRawTextContainer(tag)) {
+ return 2 /* RAWTEXT */;
+ }
+ }
+ return 0 /* DATA */;
+ }
+ };
+
+ // Parse inline CSS strings for static style attributes into an object.
+ // This is a NodeTransform since it works on the static `style` attribute and
+ // converts it into a dynamic equivalent:
+ // style="color: red" -> :style='{ "color": "red" }'
+ // It is then processed by `transformElement` and included in the generated
+ // props.
+ const transformStyle = node => {
+ if (node.type === 1 /* ELEMENT */) {
+ node.props.forEach((p, i) => {
+ if (p.type === 6 /* ATTRIBUTE */ && p.name === 'style' && p.value) {
+ // replace p with an expression node
+ node.props[i] = {
+ type: 7 /* DIRECTIVE */,
+ name: `bind`,
+ arg: createSimpleExpression(`style`, true, p.loc),
+ exp: parseInlineCSS(p.value.content, p.loc),
+ modifiers: [],
+ loc: p.loc
+ };
+ }
+ });
+ }
+ };
+ const parseInlineCSS = (cssText, loc) => {
+ const normalized = parseStringStyle(cssText);
+ return createSimpleExpression(JSON.stringify(normalized), false, loc, 3 /* CAN_STRINGIFY */);
+ };
+
+ function createDOMCompilerError(code, loc) {
+ return createCompilerError(code, loc, DOMErrorMessages );
+ }
+ const DOMErrorMessages = {
+ [49 /* X_V_HTML_NO_EXPRESSION */]: `v-html is missing expression.`,
+ [50 /* X_V_HTML_WITH_CHILDREN */]: `v-html will override element children.`,
+ [51 /* X_V_TEXT_NO_EXPRESSION */]: `v-text is missing expression.`,
+ [52 /* X_V_TEXT_WITH_CHILDREN */]: `v-text will override element children.`,
+ [53 /* X_V_MODEL_ON_INVALID_ELEMENT */]: `v-model can only be used on <input>, <textarea> and <select> elements.`,
+ [54 /* X_V_MODEL_ARG_ON_ELEMENT */]: `v-model argument is not supported on plain elements.`,
+ [55 /* X_V_MODEL_ON_FILE_INPUT_ELEMENT */]: `v-model cannot be used on file inputs since they are read-only. Use a v-on:change listener instead.`,
+ [56 /* X_V_MODEL_UNNECESSARY_VALUE */]: `Unnecessary value binding used alongside v-model. It will interfere with v-model's behavior.`,
+ [57 /* X_V_SHOW_NO_EXPRESSION */]: `v-show is missing expression.`,
+ [58 /* X_TRANSITION_INVALID_CHILDREN */]: `<Transition> expects exactly one child element or component.`,
+ [59 /* X_IGNORED_SIDE_EFFECT_TAG */]: `Tags with side effect (<script> and <style>) are ignored in client component templates.`
+ };
+
+ const transformVHtml = (dir, node, context) => {
+ const { exp, loc } = dir;
+ if (!exp) {
+ context.onError(createDOMCompilerError(49 /* X_V_HTML_NO_EXPRESSION */, loc));
+ }
+ if (node.children.length) {
+ context.onError(createDOMCompilerError(50 /* X_V_HTML_WITH_CHILDREN */, loc));
+ node.children.length = 0;
+ }
+ return {
+ props: [
+ createObjectProperty(createSimpleExpression(`innerHTML`, true, loc), exp || createSimpleExpression('', true))
+ ]
+ };
+ };
+
+ const transformVText = (dir, node, context) => {
+ const { exp, loc } = dir;
+ if (!exp) {
+ context.onError(createDOMCompilerError(51 /* X_V_TEXT_NO_EXPRESSION */, loc));
+ }
+ if (node.children.length) {
+ context.onError(createDOMCompilerError(52 /* X_V_TEXT_WITH_CHILDREN */, loc));
+ node.children.length = 0;
+ }
+ return {
+ props: [
+ createObjectProperty(createSimpleExpression(`textContent`, true), exp
+ ? createCallExpression(context.helperString(TO_DISPLAY_STRING), [exp], loc)
+ : createSimpleExpression('', true))
+ ]
+ };
+ };
+
+ const transformModel$1 = (dir, node, context) => {
+ const baseResult = transformModel(dir, node, context);
+ // base transform has errors OR component v-model (only need props)
+ if (!baseResult.props.length || node.tagType === 1 /* COMPONENT */) {
+ return baseResult;
+ }
+ if (dir.arg) {
+ context.onError(createDOMCompilerError(54 /* X_V_MODEL_ARG_ON_ELEMENT */, dir.arg.loc));
+ }
+ function checkDuplicatedValue() {
+ const value = findProp(node, 'value');
+ if (value) {
+ context.onError(createDOMCompilerError(56 /* X_V_MODEL_UNNECESSARY_VALUE */, value.loc));
+ }
+ }
+ const { tag } = node;
+ const isCustomElement = context.isCustomElement(tag);
+ if (tag === 'input' ||
+ tag === 'textarea' ||
+ tag === 'select' ||
+ isCustomElement) {
+ let directiveToUse = V_MODEL_TEXT;
+ let isInvalidType = false;
+ if (tag === 'input' || isCustomElement) {
+ const type = findProp(node, `type`);
+ if (type) {
+ if (type.type === 7 /* DIRECTIVE */) {
+ // :type="foo"
+ directiveToUse = V_MODEL_DYNAMIC;
+ }
+ else if (type.value) {
+ switch (type.value.content) {
+ case 'radio':
+ directiveToUse = V_MODEL_RADIO;
+ break;
+ case 'checkbox':
+ directiveToUse = V_MODEL_CHECKBOX;
+ break;
+ case 'file':
+ isInvalidType = true;
+ context.onError(createDOMCompilerError(55 /* X_V_MODEL_ON_FILE_INPUT_ELEMENT */, dir.loc));
+ break;
+ default:
+ // text type
+ checkDuplicatedValue();
+ break;
+ }
+ }
+ }
+ else if (hasDynamicKeyVBind(node)) {
+ // element has bindings with dynamic keys, which can possibly contain
+ // "type".
+ directiveToUse = V_MODEL_DYNAMIC;
+ }
+ else {
+ // text type
+ checkDuplicatedValue();
+ }
+ }
+ else if (tag === 'select') {
+ directiveToUse = V_MODEL_SELECT;
+ }
+ else {
+ // textarea
+ checkDuplicatedValue();
+ }
+ // inject runtime directive
+ // by returning the helper symbol via needRuntime
+ // the import will replaced a resolveDirective call.
+ if (!isInvalidType) {
+ baseResult.needRuntime = context.helper(directiveToUse);
+ }
+ }
+ else {
+ context.onError(createDOMCompilerError(53 /* X_V_MODEL_ON_INVALID_ELEMENT */, dir.loc));
+ }
+ // native vmodel doesn't need the `modelValue` props since they are also
+ // passed to the runtime as `binding.value`. removing it reduces code size.
+ baseResult.props = baseResult.props.filter(p => !(p.key.type === 4 /* SIMPLE_EXPRESSION */ &&
+ p.key.content === 'modelValue'));
+ return baseResult;
+ };
+
+ const isEventOptionModifier = /*#__PURE__*/ makeMap(`passive,once,capture`);
+ const isNonKeyModifier = /*#__PURE__*/ makeMap(
+ // event propagation management
+`stop,prevent,self,` +
+ // system modifiers + exact
+ `ctrl,shift,alt,meta,exact,` +
+ // mouse
+ `middle`);
+ // left & right could be mouse or key modifiers based on event type
+ const maybeKeyModifier = /*#__PURE__*/ makeMap('left,right');
+ const isKeyboardEvent = /*#__PURE__*/ makeMap(`onkeyup,onkeydown,onkeypress`, true);
+ const resolveModifiers = (key, modifiers) => {
+ const keyModifiers = [];
+ const nonKeyModifiers = [];
+ const eventOptionModifiers = [];
+ for (let i = 0; i < modifiers.length; i++) {
+ const modifier = modifiers[i];
+ if (isEventOptionModifier(modifier)) {
+ // eventOptionModifiers: modifiers for addEventListener() options,
+ // e.g. .passive & .capture
+ eventOptionModifiers.push(modifier);
+ }
+ else {
+ // runtimeModifiers: modifiers that needs runtime guards
+ if (maybeKeyModifier(modifier)) {
+ if (isStaticExp(key)) {
+ if (isKeyboardEvent(key.content)) {
+ keyModifiers.push(modifier);
+ }
+ else {
+ nonKeyModifiers.push(modifier);
+ }
+ }
+ else {
+ keyModifiers.push(modifier);
+ nonKeyModifiers.push(modifier);
+ }
+ }
+ else {
+ if (isNonKeyModifier(modifier)) {
+ nonKeyModifiers.push(modifier);
+ }
+ else {
+ keyModifiers.push(modifier);
+ }
+ }
+ }
+ }
+ return {
+ keyModifiers,
+ nonKeyModifiers,
+ eventOptionModifiers
+ };
+ };
+ const transformClick = (key, event) => {
+ const isStaticClick = isStaticExp(key) && key.content.toLowerCase() === 'onclick';
+ return isStaticClick
+ ? createSimpleExpression(event, true)
+ : key.type !== 4 /* SIMPLE_EXPRESSION */
+ ? createCompoundExpression([
+ `(`,
+ key,
+ `) === "onClick" ? "${event}" : (`,
+ key,
+ `)`
+ ])
+ : key;
+ };
+ const transformOn$1 = (dir, node, context) => {
+ return transformOn(dir, node, context, baseResult => {
+ const { modifiers } = dir;
+ if (!modifiers.length)
+ return baseResult;
+ let { key, value: handlerExp } = baseResult.props[0];
+ const { keyModifiers, nonKeyModifiers, eventOptionModifiers } = resolveModifiers(key, modifiers);
+ // normalize click.right and click.middle since they don't actually fire
+ if (nonKeyModifiers.includes('right')) {
+ key = transformClick(key, `onContextmenu`);
+ }
+ if (nonKeyModifiers.includes('middle')) {
+ key = transformClick(key, `onMouseup`);
+ }
+ if (nonKeyModifiers.length) {
+ handlerExp = createCallExpression(context.helper(V_ON_WITH_MODIFIERS), [
+ handlerExp,
+ JSON.stringify(nonKeyModifiers)
+ ]);
+ }
+ if (keyModifiers.length &&
+ // if event name is dynamic, always wrap with keys guard
+ (!isStaticExp(key) || isKeyboardEvent(key.content))) {
+ handlerExp = createCallExpression(context.helper(V_ON_WITH_KEYS), [
+ handlerExp,
+ JSON.stringify(keyModifiers)
+ ]);
+ }
+ if (eventOptionModifiers.length) {
+ const modifierPostfix = eventOptionModifiers.map(capitalize).join('');
+ key = isStaticExp(key)
+ ? createSimpleExpression(`${key.content}${modifierPostfix}`, true)
+ : createCompoundExpression([`(`, key, `) + "${modifierPostfix}"`]);
+ }
+ return {
+ props: [createObjectProperty(key, handlerExp)]
+ };
+ });
+ };
+
+ const transformShow = (dir, node, context) => {
+ const { exp, loc } = dir;
+ if (!exp) {
+ context.onError(createDOMCompilerError(57 /* X_V_SHOW_NO_EXPRESSION */, loc));
+ }
+ return {
+ props: [],
+ needRuntime: context.helper(V_SHOW)
+ };
+ };
+
+ const warnTransitionChildren = (node, context) => {
+ if (node.type === 1 /* ELEMENT */ &&
+ node.tagType === 1 /* COMPONENT */) {
+ const component = context.isBuiltInComponent(node.tag);
+ if (component === TRANSITION$1) {
+ return () => {
+ if (node.children.length && hasMultipleChildren(node)) {
+ context.onError(createDOMCompilerError(58 /* X_TRANSITION_INVALID_CHILDREN */, {
+ start: node.children[0].loc.start,
+ end: node.children[node.children.length - 1].loc.end,
+ source: ''
+ }));
+ }
+ };
+ }
+ }
+ };
+ function hasMultipleChildren(node) {
+ // #1352 filter out potential comment nodes.
+ const children = (node.children = node.children.filter(c => c.type !== 3 /* COMMENT */));
+ const child = children[0];
+ return (children.length !== 1 ||
+ child.type === 11 /* FOR */ ||
+ (child.type === 9 /* IF */ && child.branches.some(hasMultipleChildren)));
+ }
+
+ const ignoreSideEffectTags = (node, context) => {
+ if (node.type === 1 /* ELEMENT */ &&
+ node.tagType === 0 /* ELEMENT */ &&
+ (node.tag === 'script' || node.tag === 'style')) {
+ context.onError(createDOMCompilerError(59 /* X_IGNORED_SIDE_EFFECT_TAG */, node.loc));
+ context.removeNode();
+ }
+ };
+
+ const DOMNodeTransforms = [
+ transformStyle,
+ ...( [warnTransitionChildren] )
+ ];
+ const DOMDirectiveTransforms = {
+ cloak: noopDirectiveTransform,
+ html: transformVHtml,
+ text: transformVText,
+ model: transformModel$1,
+ on: transformOn$1,
+ show: transformShow
+ };
+ function compile$1(template, options = {}) {
+ return baseCompile(template, extend({}, parserOptions, options, {
+ nodeTransforms: [
+ // ignore <script> and <tag>
+ // this is not put inside DOMNodeTransforms because that list is used
+ // by compiler-ssr to generate vnode fallback branches
+ ignoreSideEffectTags,
+ ...DOMNodeTransforms,
+ ...(options.nodeTransforms || [])
+ ],
+ directiveTransforms: extend({}, DOMDirectiveTransforms, options.directiveTransforms || {}),
+ transformHoist: null
+ }));
+ }
+
+ // This entry is the "full-build" that includes both the runtime
+ initDev();
+ const compileCache = Object.create(null);
+ function compileToFunction(template, options) {
+ if (!isString(template)) {
+ if (template.nodeType) {
+ template = template.innerHTML;
+ }
+ else {
+ warn(`invalid template option: `, template);
+ return NOOP;
+ }
+ }
+ const key = template;
+ const cached = compileCache[key];
+ if (cached) {
+ return cached;
+ }
+ if (template[0] === '#') {
+ const el = document.querySelector(template);
+ if ( !el) {
+ warn(`Template element not found or is empty: ${template}`);
+ }
+ // __UNSAFE__
+ // Reason: potential execution of JS expressions in in-DOM template.
+ // The user must make sure the in-DOM template is trusted. If it's rendered
+ // by the server, the template should not contain any user data.
+ template = el ? el.innerHTML : ``;
+ }
+ const { code } = compile$1(template, extend({
+ hoistStatic: true,
+ onError(err) {
+ {
+ const message = `Template compilation error: ${err.message}`;
+ const codeFrame = err.loc &&
+ generateCodeFrame(template, err.loc.start.offset, err.loc.end.offset);
+ warn(codeFrame ? `${message}\n${codeFrame}` : message);
+ }
+ }
+ }, options));
+ // The wildcard import results in a huge object with every export
+ // with keys that cannot be mangled, and can be quite heavy size-wise.
+ // In the global build we know `Vue` is available globally so we can avoid
+ // the wildcard object.
+ const render = ( new Function(code)()
+ );
+ render._rc = true;
+ return (compileCache[key] = render);
+ }
+ registerRuntimeCompiler(compileToFunction);
+
+ exports.BaseTransition = BaseTransition;
+ exports.Comment = Comment;
+ exports.Fragment = Fragment;
+ exports.KeepAlive = KeepAlive;
+ exports.Static = Static;
+ exports.Suspense = Suspense;
+ exports.Teleport = Teleport;
+ exports.Text = Text;
+ exports.Transition = Transition;
+ exports.TransitionGroup = TransitionGroup;
+ exports.callWithAsyncErrorHandling = callWithAsyncErrorHandling;
+ exports.callWithErrorHandling = callWithErrorHandling;
+ exports.camelize = camelize;
+ exports.capitalize = capitalize;
+ exports.cloneVNode = cloneVNode;
+ exports.compile = compileToFunction;
+ exports.computed = computed$1;
+ exports.createApp = createApp;
+ exports.createBlock = createBlock;
+ exports.createCommentVNode = createCommentVNode;
+ exports.createHydrationRenderer = createHydrationRenderer;
+ exports.createRenderer = createRenderer;
+ exports.createSSRApp = createSSRApp;
+ exports.createSlots = createSlots;
+ exports.createStaticVNode = createStaticVNode;
+ exports.createTextVNode = createTextVNode;
+ exports.createVNode = createVNode;
+ exports.customRef = customRef;
+ exports.defineAsyncComponent = defineAsyncComponent;
+ exports.defineComponent = defineComponent;
+ exports.defineEmit = defineEmit;
+ exports.defineProps = defineProps;
+ exports.getCurrentInstance = getCurrentInstance;
+ exports.getTransitionRawChildren = getTransitionRawChildren;
+ exports.h = h;
+ exports.handleError = handleError;
+ exports.hydrate = hydrate;
+ exports.initCustomFormatter = initCustomFormatter;
+ exports.inject = inject;
+ exports.isProxy = isProxy;
+ exports.isReactive = isReactive;
+ exports.isReadonly = isReadonly;
+ exports.isRef = isRef;
+ exports.isVNode = isVNode;
+ exports.markRaw = markRaw;
+ exports.mergeProps = mergeProps;
+ exports.nextTick = nextTick;
+ exports.onActivated = onActivated;
+ exports.onBeforeMount = onBeforeMount;
+ exports.onBeforeUnmount = onBeforeUnmount;
+ exports.onBeforeUpdate = onBeforeUpdate;
+ exports.onDeactivated = onDeactivated;
+ exports.onErrorCaptured = onErrorCaptured;
+ exports.onMounted = onMounted;
+ exports.onRenderTracked = onRenderTracked;
+ exports.onRenderTriggered = onRenderTriggered;
+ exports.onUnmounted = onUnmounted;
+ exports.onUpdated = onUpdated;
+ exports.openBlock = openBlock;
+ exports.popScopeId = popScopeId;
+ exports.provide = provide;
+ exports.proxyRefs = proxyRefs;
+ exports.pushScopeId = pushScopeId;
+ exports.queuePostFlushCb = queuePostFlushCb;
+ exports.reactive = reactive;
+ exports.readonly = readonly;
+ exports.ref = ref;
+ exports.registerRuntimeCompiler = registerRuntimeCompiler;
+ exports.render = render;
+ exports.renderList = renderList;
+ exports.renderSlot = renderSlot;
+ exports.resolveComponent = resolveComponent;
+ exports.resolveDirective = resolveDirective;
+ exports.resolveDynamicComponent = resolveDynamicComponent;
+ exports.resolveTransitionHooks = resolveTransitionHooks;
+ exports.setBlockTracking = setBlockTracking;
+ exports.setDevtoolsHook = setDevtoolsHook;
+ exports.setTransitionHooks = setTransitionHooks;
+ exports.shallowReactive = shallowReactive;
+ exports.shallowReadonly = shallowReadonly;
+ exports.shallowRef = shallowRef;
+ exports.ssrContextKey = ssrContextKey;
+ exports.ssrUtils = ssrUtils;
+ exports.toDisplayString = toDisplayString;
+ exports.toHandlerKey = toHandlerKey;
+ exports.toHandlers = toHandlers;
+ exports.toRaw = toRaw;
+ exports.toRef = toRef;
+ exports.toRefs = toRefs;
+ exports.transformVNodeArgs = transformVNodeArgs;
+ exports.triggerRef = triggerRef;
+ exports.unref = unref;
+ exports.useContext = useContext;
+ exports.useCssModule = useCssModule;
+ exports.useCssVars = useCssVars;
+ exports.useSSRContext = useSSRContext;
+ exports.useTransitionState = useTransitionState;
+ exports.vModelCheckbox = vModelCheckbox;
+ exports.vModelDynamic = vModelDynamic;
+ exports.vModelRadio = vModelRadio;
+ exports.vModelSelect = vModelSelect;
+ exports.vModelText = vModelText;
+ exports.vShow = vShow;
+ exports.version = version;
+ exports.warn = warn;
+ exports.watch = watch;
+ exports.watchEffect = watchEffect;
+ exports.withCtx = withCtx;
+ exports.withDirectives = withDirectives;
+ exports.withKeys = withKeys;
+ exports.withModifiers = withModifiers;
+ exports.withScopeId = withScopeId;
+
+ Object.defineProperty(exports, '__esModule', { value: true });
+
+ return exports;
+
+}({}));
\ No newline at end of file |