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Ignore whitespace Rev 7823 → Rev 7824

/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 '&lt;' 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_DIRECT