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,BigInt';
const isGloballyWhitelisted = /*#__PURE__*/ makeMap(GLOBALS_WHITE_LISTED);
const range = 2;
function generateCodeFrame(source, start = 0, end = source.length) {
// Split the content into individual lines but capture the newline sequence
// that separated each line. This is important because the actual sequence is
// needed to properly take into account the full line length for offset
// comparison
let lines = source.split(/(\r?\n)/);
// Separate the lines and newline sequences into separate arrays for easier referencing
const newlineSequences = lines.filter((_, idx) => idx % 2 === 1);
lines = lines.filter((_, idx) => idx % 2 === 0);
let count = 0;
const res = [];
for (let i = 0; i < lines.length; i++) {
count +=
lines[i].length +
((newlineSequences[i] && newlineSequences[i].length) || 0);
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;
const newLineSeqLength = (newlineSequences[j] && newlineSequences[j].length) || 0;
if (j === i) {
// push underline
const pad = start - (count - (lineLength + newLineSeqLength));
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 + newLineSeqLength;
}
}
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);
/**
* Boolean attributes should be included if the value is truthy or ''.
* e.g. `<select multiple>` compiles to `{ multiple: '' }`
*/
function includeBooleanAttr(value) {
return !!value || value === '';
}
function normalizeStyle(value) {
if (isArray(value)) {
const res = {};
for (let i = 0; i < value.length; i++) {
const item = value[i];
const normalized = isString(item)
? parseStringStyle(item)
: normalizeStyle(item);
if (normalized) {
for (const key in normalized) {
res[key] = normalized[key];
}
}
}
return res;
}
else if (isString(value)) {
return value;
}
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++) {
const normalized = normalizeClass(value[i]);
if (normalized) {
res += normalized + ' ';
}
}
}
else if (isObject(value)) {
for (const name in value) {
if (value[name]) {
res += name + ' ';
}
}
}
return res.trim();
}
function normalizeProps(props) {
if (!props)
return null;
let { class: klass, style } = props;
if (klass && !isString(klass)) {
props.class = normalizeClass(klass);
}
if (style) {
props.style = normalizeStyle(style);
}
return props;
}
// 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,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,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';
/**
* Compiler only.
* Do NOT use in runtime code paths unless behind `true` flag.
*/
const isHTMLTag = /*#__PURE__*/ makeMap(HTML_TAGS);
/**
* Compiler only.
* Do NOT use in runtime code paths unless behind `true` flag.
*/
const isSVGTag = /*#__PURE__*/ makeMap(SVG_TAGS);
/**
* Compiler only.
* Do NOT use in runtime code paths unless behind `true` flag.
*/
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 isString(val)
? val
: val == null
? ''
: isArray(val) ||
(isObject(val) &&
(val.toString === objectToString || !isFunction(val.toString)))
? JSON.stringify(val, replacer, 2)
: String(val);
};
const replacer = (_key, val) => {
// can't use isRef here since @vue/shared has no deps
if (val && val.__v_isRef) {
return replacer(_key, val.value);
}
else 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,ref_for,ref_key,' +
'onVnodeBeforeMount,onVnodeMounted,' +
'onVnodeBeforeUpdate,onVnodeUpdated,' +
'onVnodeBeforeUnmount,onVnodeUnmounted');
const isBuiltInDirective = /*#__PURE__*/ makeMap('bind,cloak,else-if,else,for,html,if,model,on,once,pre,show,slot,text,memo');
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) => !Object.is(value, 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
: {}));
};
function warn(msg, ...args) {
console.warn(`[Vue warn] ${msg}`, ...args);
}
let activeEffectScope;
class EffectScope {
constructor(detached = false) {
this.active = true;
this.effects = [];
this.cleanups = [];
if (!detached && activeEffectScope) {
this.parent = activeEffectScope;
this.index =
(activeEffectScope.scopes || (activeEffectScope.scopes = [])).push(this) - 1;
}
}
run(fn) {
if (this.active) {
try {
activeEffectScope = this;
return fn();
}
finally {
activeEffectScope = this.parent;
}
}
else {
warn(`cannot run an inactive effect scope.`);
}
}
on() {
activeEffectScope = this;
}
off() {
activeEffectScope = this.parent;
}
stop(fromParent) {
if (this.active) {
let i, l;
for (i = 0, l = this.effects.length; i < l; i++) {
this.effects[i].stop();
}
for (i = 0, l = this.cleanups.length; i < l; i++) {
this.cleanups[i]();
}
if (this.scopes) {
for (i = 0, l = this.scopes.length; i < l; i++) {
this.scopes[i].stop(true);
}
}
// nested scope, dereference from parent to avoid memory leaks
if (this.parent && !fromParent) {
// optimized O(1) removal
const last = this.parent.scopes.pop();
if (last && last !== this) {
this.parent.scopes[this.index] = last;
last.index = this.index;
}
}
this.active = false;
}
}
}
function effectScope(detached) {
return new EffectScope(detached);
}
function recordEffectScope(effect, scope = activeEffectScope) {
if (scope && scope.active) {
scope.effects.push(effect);
}
}
function getCurrentScope() {
return activeEffectScope;
}
function onScopeDispose(fn) {
if (activeEffectScope) {
activeEffectScope.cleanups.push(fn);
}
else {
warn(`onScopeDispose() is called when there is no active effect scope` +
` to be associated with.`);
}
}
const createDep = (effects) => {
const dep = new Set(effects);
dep.w = 0;
dep.n = 0;
return dep;
};
const wasTracked = (dep) => (dep.w & trackOpBit) > 0;
const newTracked = (dep) => (dep.n & trackOpBit) > 0;
const initDepMarkers = ({ deps }) => {
if (deps.length) {
for (let i = 0; i < deps.length; i++) {
deps[i].w |= trackOpBit; // set was tracked
}
}
};
const finalizeDepMarkers = (effect) => {
const { deps } = effect;
if (deps.length) {
let ptr = 0;
for (let i = 0; i < deps.length; i++) {
const dep = deps[i];
if (wasTracked(dep) && !newTracked(dep)) {
dep.delete(effect);
}
else {
deps[ptr++] = dep;
}
// clear bits
dep.w &= ~trackOpBit;
dep.n &= ~trackOpBit;
}
deps.length = ptr;
}
};
const targetMap = new WeakMap();
// The number of effects currently being tracked recursively.
let effectTrackDepth = 0;
let trackOpBit = 1;
/**
* The bitwise track markers support at most 30 levels of recursion.
* This value is chosen to enable modern JS engines to use a SMI on all platforms.
* When recursion depth is greater, fall back to using a full cleanup.
*/
const maxMarkerBits = 30;
let activeEffect;
const ITERATE_KEY = Symbol('iterate' );
const MAP_KEY_ITERATE_KEY = Symbol('Map key iterate' );
class ReactiveEffect {
constructor(fn, scheduler = null, scope) {
this.fn = fn;
this.scheduler = scheduler;
this.active = true;
this.deps = [];
this.parent = undefined;
recordEffectScope(this, scope);
}
run() {
if (!this.active) {
return this.fn();
}
let parent = activeEffect;
let lastShouldTrack = shouldTrack;
while (parent) {
if (parent === this) {
return;
}
parent = parent.parent;
}
try {
this.parent = activeEffect;
activeEffect = this;
shouldTrack = true;
trackOpBit = 1 << ++effectTrackDepth;
if (effectTrackDepth <= maxMarkerBits) {
initDepMarkers(this);
}
else {
cleanupEffect(this);
}
return this.fn();
}
finally {
if (effectTrackDepth <= maxMarkerBits) {
finalizeDepMarkers(this);
}
trackOpBit = 1 << --effectTrackDepth;
activeEffect = this.parent;
shouldTrack = lastShouldTrack;
this.parent = undefined;
}
}
stop() {
if (this.active) {
cleanupEffect(this);
if (this.onStop) {
this.onStop();
}
this.active = false;
}
}
}
function cleanupEffect(effect) {
const { deps } = effect;
if (deps.length) {
for (let i = 0; i < deps.length; i++) {
deps[i].delete(effect);
}
deps.length = 0;
}
}
function effect(fn, options) {
if (fn.effect) {
fn = fn.effect.fn;
}
const _effect = new ReactiveEffect(fn);
if (options) {
extend(_effect, options);
if (options.scope)
recordEffectScope(_effect, options.scope);
}
if (!options || !options.lazy) {
_effect.run();
}
const runner = _effect.run.bind(_effect);
runner.effect = _effect;
return runner;
}
function stop(runner) {
runner.effect.stop();
}
let shouldTrack = true;
const trackStack = [];
function pauseTracking() {
trackStack.push(shouldTrack);
shouldTrack = false;
}
function resetTracking() {
const last = trackStack.pop();
shouldTrack = last === undefined ? true : last;
}
function track(target, type, key) {
if (shouldTrack && activeEffect) {
let depsMap = targetMap.get(target);
if (!depsMap) {
targetMap.set(target, (depsMap = new Map()));
}
let dep = depsMap.get(key);
if (!dep) {
depsMap.set(key, (dep = createDep()));
}
const eventInfo = { effect: activeEffect, target, type, key }
;
trackEffects(dep, eventInfo);
}
}
function trackEffects(dep, debuggerEventExtraInfo) {
let shouldTrack = false;
if (effectTrackDepth <= maxMarkerBits) {
if (!newTracked(dep)) {
dep.n |= trackOpBit; // set newly tracked
shouldTrack = !wasTracked(dep);
}
}
else {
// Full cleanup mode.
shouldTrack = !dep.has(activeEffect);
}
if (shouldTrack) {
dep.add(activeEffect);
activeEffect.deps.push(dep);
if (activeEffect.onTrack) {
activeEffect.onTrack(Object.assign({
effect: activeEffect
}, debuggerEventExtraInfo));
}
}
}
function trigger(target, type, key, newValue, oldValue, oldTarget) {
const depsMap = targetMap.get(target);
if (!depsMap) {
// never been tracked
return;
}
let deps = [];
if (type === "clear" /* CLEAR */) {
// collection being cleared
// trigger all effects for target
deps = [...depsMap.values()];
}
else if (key === 'length' && isArray(target)) {
depsMap.forEach((dep, key) => {
if (key === 'length' || key >= newValue) {
deps.push(dep);
}
});
}
else {
// schedule runs for SET | ADD | DELETE
if (key !== void 0) {
deps.push(depsMap.get(key));
}
// also run for iteration key on ADD | DELETE | Map.SET
switch (type) {
case "add" /* ADD */:
if (!isArray(target)) {
deps.push(depsMap.get(ITERATE_KEY));
if (isMap(target)) {
deps.push(depsMap.get(MAP_KEY_ITERATE_KEY));
}
}
else if (isIntegerKey(key)) {
// new index added to array -> length changes
deps.push(depsMap.get('length'));
}
break;
case "delete" /* DELETE */:
if (!isArray(target)) {
deps.push(depsMap.get(ITERATE_KEY));
if (isMap(target)) {
deps.push(depsMap.get(MAP_KEY_ITERATE_KEY));
}
}
break;
case "set" /* SET */:
if (isMap(target)) {
deps.push(depsMap.get(ITERATE_KEY));
}
break;
}
}
const eventInfo = { target, type, key, newValue, oldValue, oldTarget }
;
if (deps.length === 1) {
if (deps[0]) {
{
triggerEffects(deps[0], eventInfo);
}
}
}
else {
const effects = [];
for (const dep of deps) {
if (dep) {
effects.push(...dep);
}
}
{
triggerEffects(createDep(effects), eventInfo);
}
}
}
function triggerEffects(dep, debuggerEventExtraInfo) {
// spread into array for stabilization
for (const effect of isArray(dep) ? dep : [...dep]) {
if (effect !== activeEffect || effect.allowRecurse) {
if (effect.onTrigger) {
effect.onTrigger(extend({ effect }, debuggerEventExtraInfo));
}
if (effect.scheduler) {
effect.scheduler();
}
else {
effect.run();
}
}
}
}
const isNonTrackableKeys = /*#__PURE__*/ makeMap(`__proto__,__v_isRef,__isVue`);
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 = /*#__PURE__*/ createArrayInstrumentations();
function createArrayInstrumentations() {
const instrumentations = {};
['includes', 'indexOf', 'lastIndexOf'].forEach(key => {
instrumentations[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 = arr[key](...args);
if (res === -1 || res === false) {
// if that didn't work, run it again using raw values.
return arr[key](...args.map(toRaw));
}
else {
return res;
}
};
});
['push', 'pop', 'shift', 'unshift', 'splice'].forEach(key => {
instrumentations[key] = function (...args) {
pauseTracking();
const res = toRaw(this)[key].apply(this, args);
resetTracking();
return res;
};
});
return instrumentations;
}
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_isShallow" /* IS_SHALLOW */) {
return shallow;
}
else if (key === "__v_raw" /* RAW */ &&
receiver ===
(isReadonly
? shallow
? shallowReadonlyMap
: readonlyMap
: shallow
? shallowReactiveMap
: 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) : isNonTrackableKeys(key)) {
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) {
let oldValue = target[key];
if (isReadonly(oldValue) && isRef(oldValue) && !isRef(value)) {
return false;
}
if (!shallow && !isReadonly(value)) {
if (!isShallow(value)) {
value = toRaw(value);
oldValue = toRaw(oldValue);
}
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 = /*#__PURE__*/ 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 = /*#__PURE__*/ extend({}, readonlyHandlers, {
get: shallowReadonlyGet
});
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 = isShallow ? toShallow : isReadonly ? toReadonly : toReactive;
if (has.call(rawTarget, key)) {
return wrap(target.get(key));
}
else if (has.call(rawTarget, rawKey)) {
return wrap(target.get(rawKey));
}
else if (target !== rawTarget) {
// #3602 readonly(reactive(Map))
// ensure that the nested reactive `Map` can do tracking for itself
target.get(key);
}
}
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);
if (!hadKey) {
target.add(value);
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 = isShallow ? toShallow : isReadonly ? toReadonly : 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 = isShallow ? toShallow : isReadonly ? toReadonly : 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;
};
}
function createInstrumentations() {
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 shallowReadonlyInstrumentations = {
get(key) {
return get$1(this, key, true, 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, true)
};
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);
shallowReadonlyInstrumentations[method] = createIterableMethod(method, true, true);
});
return [
mutableInstrumentations,
readonlyInstrumentations,
shallowInstrumentations,
shallowReadonlyInstrumentations
];
}
const [mutableInstrumentations, readonlyInstrumentations, shallowInstrumentations, shallowReadonlyInstrumentations] = /* #__PURE__*/ createInstrumentations();
function createInstrumentationGetter(isReadonly, shallow) {
const instrumentations = shallow
? isReadonly
? shallowReadonlyInstrumentations
: 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: /*#__PURE__*/ createInstrumentationGetter(false, false)
};
const shallowCollectionHandlers = {
get: /*#__PURE__*/ createInstrumentationGetter(false, true)
};
const readonlyCollectionHandlers = {
get: /*#__PURE__*/ createInstrumentationGetter(true, false)
};
const shallowReadonlyCollectionHandlers = {
get: /*#__PURE__*/ createInstrumentationGetter(true, true)
};
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 shallowReactiveMap = new WeakMap();
const readonlyMap = new WeakMap();
const shallowReadonlyMap = 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 (isReadonly(target)) {
return target;
}
return createReactiveObject(target, false, mutableHandlers, mutableCollectionHandlers, reactiveMap);
}
/**
* 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, shallowReactiveMap);
}
/**
* 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, readonlyMap);
}
/**
* 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, shallowReadonlyCollectionHandlers, shallowReadonlyMap);
}
function createReactiveObject(target, isReadonly, baseHandlers, collectionHandlers, proxyMap) {
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 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 isShallow(value) {
return !!(value && value["__v_isShallow" /* IS_SHALLOW */]);
}
function isProxy(value) {
return isReactive(value) || isReadonly(value);
}
function toRaw(observed) {
const raw = observed && observed["__v_raw" /* RAW */];
return raw ? toRaw(raw) : observed;
}
function markRaw(value) {
def(value, "__v_skip" /* SKIP */, true);
return value;
}
const toReactive = (value) => isObject(value) ? reactive(value) : value;
const toReadonly = (value) => isObject(value) ? readonly(value) : value;
function trackRefValue(ref) {
if (shouldTrack && activeEffect) {
ref = toRaw(ref);
{
trackEffects(ref.dep || (ref.dep = createDep()), {
target: ref,
type: "get" /* GET */,
key: 'value'
});
}
}
}
function triggerRefValue(ref, newVal) {
ref = toRaw(ref);
if (ref.dep) {
{
triggerEffects(ref.dep, {
target: ref,
type: "set" /* SET */,
key: 'value',
newValue: newVal
});
}
}
}
function isRef(r) {
return !!(r && r.__v_isRef === true);
}
function ref(value) {
return createRef(value, false);
}
function shallowRef(value) {
return createRef(value, true);
}
function createRef(rawValue, shallow) {
if (isRef(rawValue)) {
return rawValue;
}
return new RefImpl(rawValue, shallow);
}
class RefImpl {
constructor(value, __v_isShallow) {
this.__v_isShallow = __v_isShallow;
this.dep = undefined;
this.__v_isRef = true;
this._rawValue = __v_isShallow ? value : toRaw(value);
this._value = __v_isShallow ? value : toReactive(value);
}
get value() {
trackRefValue(this);
return this._value;
}
set value(newVal) {
newVal = this.__v_isShallow ? newVal : toRaw(newVal);
if (hasChanged(newVal, this._rawValue)) {
this._rawValue = newVal;
this._value = this.__v_isShallow ? newVal : toReactive(newVal);
triggerRefValue(this, newVal);
}
}
}
function triggerRef(ref) {
triggerRefValue(ref, 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.dep = undefined;
this.__v_isRef = true;
const { get, set } = factory(() => trackRefValue(this), () => triggerRefValue(this));
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, _defaultValue) {
this._object = _object;
this._key = _key;
this._defaultValue = _defaultValue;
this.__v_isRef = true;
}
get value() {
const val = this._object[this._key];
return val === undefined ? this._defaultValue : val;
}
set value(newVal) {
this._object[this._key] = newVal;
}
}
function toRef(object, key, defaultValue) {
const val = object[key];
return isRef(val)
? val
: new ObjectRefImpl(object, key, defaultValue);
}
class ComputedRefImpl {
constructor(getter, _setter, isReadonly, isSSR) {
this._setter = _setter;
this.dep = undefined;
this.__v_isRef = true;
this._dirty = true;
this.effect = new ReactiveEffect(getter, () => {
if (!this._dirty) {
this._dirty = true;
triggerRefValue(this);
}
});
this.effect.computed = this;
this.effect.active = this._cacheable = !isSSR;
this["__v_isReadonly" /* IS_READONLY */] = isReadonly;
}
get value() {
// the computed ref may get wrapped by other proxies e.g. readonly() #3376
const self = toRaw(this);
trackRefValue(self);
if (self._dirty || !self._cacheable) {
self._dirty = false;
self._value = self.effect.run();
}
return self._value;
}
set value(newValue) {
this._setter(newValue);
}
}
function computed(getterOrOptions, debugOptions, isSSR = false) {
let getter;
let setter;
const onlyGetter = isFunction(getterOrOptions);
if (onlyGetter) {
getter = getterOrOptions;
setter = () => {
console.warn('Write operation failed: computed value is readonly');
}
;
}
else {
getter = getterOrOptions.get;
setter = getterOrOptions.set;
}
const cRef = new ComputedRefImpl(getter, setter, onlyGetter || !setter, isSSR);
if (debugOptions && !isSSR) {
cRef.effect.onTrack = debugOptions.onTrack;
cRef.effect.onTrigger = debugOptions.onTrigger;
}
return cRef;
}
const stack = [];
function pushWarningContext(vnode) {
stack.push(vnode);
}
function popWarningContext() {
stack.pop();
}
function warn$1(msg, ...args) {
// avoid props formatting or warn handler tracking deps that might be mutated
// during patch, leading to infinite recursion.
pauseTracking();
const instance = stack.length ? stack[stack.length - 1].component : null;
const appWarnHandler = instance && instance.appContext.config.warnHandler;
const trace = getComponentTrace();
if (appWarnHandler) {
callWithErrorHandling(appWarnHandler, instance, 11 /* APP_WARN_HANDLER */, [
msg + args.join(''),
instance && instance.proxy,
trace
.map(({ vnode }) => `at <${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 = {
["sp" /* SERVER_PREFETCH */]: 'serverPrefetch hook',
["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/core'
};
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$1(`Unhandled error${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;
}
// #2768
// Use binary-search to find a suitable position in the queue,
// so that the queue maintains the increasing order of job's id,
// which can prevent the job from being skipped and also can avoid repeated patching.
function findInsertionIndex(id) {
// the start index should be `flushIndex + 1`
let start = flushIndex + 1;
let end = queue.length;
while (start < end) {
const middle = (start + end) >>> 1;
const middleJobId = getId(queue[middle]);
middleJobId < id ? (start = middle + 1) : (end = middle);
}
return start;
}
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) {
if (job.id == null) {
queue.push(job);
}
else {
queue.splice(findInsertionIndex(job.id), 0, job);
}
queueFlush();
}
}
function queueFlush() {
if (!isFlushing && !isFlushPending) {
isFlushPending = true;
currentFlushPromise = resolvedPromise.then(flushJobs);
}
}
function invalidateJob(job) {
const i = queue.indexOf(job);
if (i > flushIndex) {
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++) {
if (checkRecursiveUpdates(seen, activePreFlushCbs[preFlushIndex])) {
continue;
}
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++) {
if (checkRecursiveUpdates(seen, activePostFlushCbs[postFlushIndex])) {
continue;
}
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));
// conditional usage of checkRecursiveUpdate must be determined out of
// try ... catch block since Rollup by default de-optimizes treeshaking
// inside try-catch. This can leave all warning code unshaked. Although
// they would get eventually shaken by a minifier like terser, some minifiers
// would fail to do that (e.g. https://github.com/evanw/esbuild/issues/1610)
const check = (job) => checkRecursiveUpdates(seen, job)
;
try {
for (flushIndex = 0; flushIndex < queue.length; flushIndex++) {
const job = queue[flushIndex];
if (job && job.active !== false) {
if (true && check(job)) {
continue;
}
// console.log(`running:`, job.id)
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 ||
pendingPreFlushCbs.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) {
const instance = fn.ownerInstance;
const componentName = instance && getComponentName(instance.type);
warn$1(`Maximum recursive updates exceeded${componentName ? ` in component <${componentName}>` : ``}. ` +
`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.`);
return true;
}
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.
{
getGlobalThis().__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, initialDef) {
if (map.has(id)) {
return false;
}
map.set(id, {
initialDef: normalizeClassComponent(initialDef),
instances: new Set()
});
return true;
}
function normalizeClassComponent(component) {
return isClassComponent(component) ? component.__vccOpts : component;
}
function rerender(id, newRender) {
const record = map.get(id);
if (!record) {
return;
}
// update initial record (for not-yet-rendered component)
record.initialDef.render = newRender;
[...record.instances].forEach(instance => {
if (newRender) {
instance.render = newRender;
normalizeClassComponent(instance.type).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;
newComp = normalizeClassComponent(newComp);
// update initial def (for not-yet-rendered components)
updateComponentDef(record.initialDef, newComp);
// create a snapshot which avoids the set being mutated during updates
const instances = [...record.instances];
for (const instance of instances) {
const oldComp = normalizeClassComponent(instance.type);
if (!hmrDirtyComponents.has(oldComp)) {
// 1. Update existing comp definition to match new one
if (oldComp !== record.initialDef) {
updateComponentDef(oldComp, newComp);
}
// 2. mark definition dirty. This forces the renderer to replace the
// component on patch.
hmrDirtyComponents.add(oldComp);
}
// 3. invalidate options resolution cache
instance.appContext.optionsCache.delete(instance.type);
// 4. actually update
if (instance.ceReload) {
// custom element
hmrDirtyComponents.add(oldComp);
instance.ceReload(newComp.styles);
hmrDirtyComponents.delete(oldComp);
}
else 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);
// instance is the inner component of an async custom element
// invoke to reset styles
if (instance.parent.type.__asyncLoader &&
instance.parent.ceReload) {
instance.parent.ceReload(newComp.styles);
}
}
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.');
}
}
// 5. make sure to cleanup dirty hmr components after update
queuePostFlushCb(() => {
for (const instance of instances) {
hmrDirtyComponents.delete(normalizeClassComponent(instance.type));
}
});
}
function updateComponentDef(oldComp, newComp) {
extend(oldComp, newComp);
for (const key in oldComp) {
if (key !== '__file' && !(key in newComp)) {
delete oldComp[key];
}
}
}
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.`);
}
};
}
let buffer = [];
let devtoolsNotInstalled = false;
function emit(event, ...args) {
if (exports.devtools) {
exports.devtools.emit(event, ...args);
}
else if (!devtoolsNotInstalled) {
buffer.push({ event, args });
}
}
function setDevtoolsHook(hook, target) {
var _a, _b;
exports.devtools = hook;
if (exports.devtools) {
exports.devtools.enabled = true;
buffer.forEach(({ event, args }) => exports.devtools.emit(event, ...args));
buffer = [];
}
else if (
// handle late devtools injection - only do this if we are in an actual
// browser environment to avoid the timer handle stalling test runner exit
// (#4815)
// eslint-disable-next-line no-restricted-globals
typeof window !== 'undefined' &&
// some envs mock window but not fully
window.HTMLElement &&
// also exclude jsdom
!((_b = (_a = window.navigator) === null || _a === void 0 ? void 0 : _a.userAgent) === null || _b === void 0 ? void 0 : _b.includes('jsdom'))) {
const replay = (target.__VUE_DEVTOOLS_HOOK_REPLAY__ =
target.__VUE_DEVTOOLS_HOOK_REPLAY__ || []);
replay.push((newHook) => {
setDevtoolsHook(newHook, target);
});
// clear buffer after 3s - the user probably doesn't have devtools installed
// at all, and keeping the buffer will cause memory leaks (#4738)
setTimeout(() => {
if (!exports.devtools) {
target.__VUE_DEVTOOLS_HOOK_REPLAY__ = null;
devtoolsNotInstalled = true;
buffer = [];
}
}, 3000);
}
else {
// non-browser env, assume not installed
devtoolsNotInstalled = true;
buffer = [];
}
}
function devtoolsInitApp(app, version) {
emit("app:init" /* APP_INIT */, app, version, {
Fragment,
Text,
Comment,
Static
});
}
function devtoolsUnmountApp(app) {
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) => {
emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined, component);
};
}
const devtoolsPerfStart = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:start" /* PERFORMANCE_START */);
const devtoolsPerfEnd = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:end" /* PERFORMANCE_END */);
function createDevtoolsPerformanceHook(hook) {
return (component, type, time) => {
emit(hook, component.appContext.app, component.uid, component, type, time);
};
}
function devtoolsComponentEmit(component, event, params) {
emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);
}
function emit$1(instance, event, ...rawArgs) {
const props = instance.vnode.props || EMPTY_OBJ;
{
const { emitsOptions, propsOptions: [propsOptions] } = instance;
if (emitsOptions) {
if (!(event in emitsOptions) &&
!(false )) {
if (!propsOptions || !(toHandlerKey(event) in propsOptions)) {
warn$1(`Component emitted event "${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$1(`Invalid event arguments: event validation failed for event "${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$1(`Event "${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}".`);
}
}
let handlerName;
let handler = props[(handlerName = toHandlerKey(event))] ||
// also try camelCase event handler (#2249)
props[(handlerName = toHandlerKey(camelize(event)))];
// for v-model update:xxx events, also trigger kebab-case equivalent
// for props passed via kebab-case
if (!handler && isModelListener) {
handler = props[(handlerName = toHandlerKey(hyphenate(event)))];
}
if (handler) {
callWithAsyncErrorHandling(handler, instance, 6 /* COMPONENT_EVENT_HANDLER */, args);
}
const onceHandler = props[handlerName + `Once`];
if (onceHandler) {
if (!instance.emitted) {
instance.emitted = {};
}
else if (instance.emitted[handlerName]) {
return;
}
instance.emitted[handlerName] = true;
callWithAsyncErrorHandling(onceHandler, instance, 6 /* COMPONENT_EVENT_HANDLER */, args);
}
}
function normalizeEmitsOptions(comp, appContext, asMixin = false) {
const cache = appContext.emitsCache;
const cached = cache.get(comp);
if (cached !== undefined) {
return cached;
}
const raw = comp.emits;
let normalized = {};
// apply mixin/extends props
let hasExtends = false;
if (!isFunction(comp)) {
const extendEmits = (raw) => {
const normalizedFromExtend = normalizeEmitsOptions(raw, appContext, true);
if (normalizedFromExtend) {
hasExtends = true;
extend(normalized, normalizedFromExtend);
}
};
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) {
cache.set(comp, null);
return null;
}
if (isArray(raw)) {
raw.forEach(key => (normalized[key] = null));
}
else {
extend(normalized, raw);
}
cache.set(comp, normalized);
return 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;
let currentScopeId = null;
/**
* Note: rendering calls maybe nested. The function returns the parent rendering
* instance if present, which should be restored after the render is done:
*
* ```js
* const prev = setCurrentRenderingInstance(i)
* // ...render
* setCurrentRenderingInstance(prev)
*
/ function setCurrentRenderingInstance(instance) { const prev = currentRenderingInstance; currentRenderingInstance = instance; currentScopeId = (instance && instance.type.__scopeId) || null; return prev; } /*
- Set scope id when creating hoisted vnodes.
- @private compiler helper / function pushScopeId(id) { currentScopeId = id; } /*
- Technically we no longer need this after 3.0.8 but we need to keep the same
- API for backwards compat w/ code generated by compilers.
- @private / function popScopeId() { currentScopeId = null; } /*
- Only for backwards compat
- @private / const withScopeId = (_id) => withCtx; /*
- Wrap a slot function to memoize current rendering instance
@private compiler helper */ function withCtx(fn, ctx = currentRenderingInstance, isNonScopedSlot // false only ) { if (!ctx)
return fn;
// already normalized if (fn._n) {
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 disable block tracking and // force bail out when invoking a compiled slot (indicated by the ._d flag). // This isn't necessary if rendering a compiled `<slot>`, so we flip the // ._d flag off when invoking the wrapped fn inside `renderSlot`. if (renderFnWithContext._d) { setBlockTracking(-1); } const prevInstance = setCurrentRenderingInstance(ctx); const res = fn(...args); setCurrentRenderingInstance(prevInstance); if (renderFnWithContext._d) { setBlockTracking(1); } { devtoolsComponentUpdated(ctx); } return res;
}; // mark normalized to avoid duplicated wrapping renderFnWithContext._n = true; // mark this as compiled by default // this is used in vnode.ts -> normalizeChildren() to set the slot // rendering flag. renderFnWithContext._c = true; // disable block tracking by default renderFnWithContext._d = true; return renderFnWithContext; }
/**
- 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, inheritAttrs } = instance;
let result;
let fallthroughAttrs;
const prev = setCurrentRenderingInstance(instance);
{
} try {accessedAttrs = false;
} catch (err) {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 (result.patchFlag > 0 &&blockStack.length = 0; handleError(err, instance, 1 /* RENDER_FUNCTION */); result = createVNode(Comment);
} if (fallthroughAttrs && inheritAttrs !== false) {result.patchFlag & 2048 /* DEV_ROOT_FRAGMENT */) { [root, setRoot] = getChildRoot(result);
} // inherit directives if (vnode.dirs) {const keys = Object.keys(fallthroughAttrs); const { shapeFlag } = root; if (keys.length) { if (shapeFlag & (1 /* ELEMENT */ | 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 (!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$1(`Extraneous non-props attributes (` + `${extraAttrs.join(', ')}) ` + `were passed to component but could not be automatically inherited ` + `because component renders fragment or text root nodes.`); } if (eventAttrs.length) { warn$1(`Extraneous non-emits event listeners (` + `${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 transition data if (vnode.transition) {if (!isElementRoot(root)) { warn$1(`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;
} if (setRoot) {if (!isElementRoot(root)) { warn$1(`Component inside <Transition> renders non-element root node ` + `that cannot be animated.`); } root.transition = vnode.transition;
} else {setRoot(root);
} setCurrentRenderingInstance(prev); return result; } /**result = root;
- 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 / | 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 = { name: ‘Suspense’, // 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, slotScopeIds, optimized, // platform-specific impl passed from renderer rendererInternals) {if (n1 == null) { mountSuspense(n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, rendererInternals); } else { patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, slotScopeIds, optimized, rendererInternals); }
}, hydrate: hydrateSuspense, create: createSuspenseBoundary, normalize: normalizeSuspenseChildren }; // Force-casted public typing for h and TSX props inference const Suspense = (SuspenseImpl ); function triggerEvent(vnode, name) { const eventListener = vnode.props && vnode.props[name]; if (isFunction(eventListener)) {
eventListener();
} } function mountSuspense(vnode, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, rendererInternals) { const { p: patch, o: { createElement } } = rendererInternals; const hiddenContainer = createElement(‘div’); const suspense = (vnode.suspense = createSuspenseBoundary(vnode, parentSuspense, parentComponent, container, hiddenContainer, anchor, isSVG, slotScopeIds, optimized, rendererInternals)); // start mounting the content subtree in an off-dom container patch(null, (suspense.pendingBranch = vnode.ssContent), hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds); // now check if we have encountered any async deps if (suspense.deps > 0) {
// has async // invoke @fallback event triggerEvent(vnode, 'onPending'); triggerEvent(vnode, 'onFallback'); // mount the fallback tree patch(null, vnode.ssFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context isSVG, slotScopeIds); setActiveBranch(suspense, vnode.ssFallback);
} else {
// Suspense has no async deps. Just resolve. suspense.resolve();
} } function patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, slotScopeIds, optimized, { 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, slotScopeIds, optimized); if (suspense.deps <= 0) { suspense.resolve(); } else if (isInFallback) { patch(activeBranch, newFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context isSVG, slotScopeIds, optimized); 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, slotScopeIds, optimized); if (suspense.deps <= 0) { suspense.resolve(); } else { patch(activeBranch, newFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context isSVG, slotScopeIds, optimized); setActiveBranch(suspense, newFallback); } } else if (activeBranch && isSameVNodeType(newBranch, activeBranch)) { // toggled "back" to current active branch patch(activeBranch, newBranch, container, anchor, parentComponent, suspense, isSVG, slotScopeIds, optimized); // force resolve suspense.resolve(true); } else { // switched to a 3rd branch patch(null, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds, optimized); 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, slotScopeIds, optimized); setActiveBranch(suspense, newBranch); } else { // root node toggled // invoke @pending event triggerEvent(n2, 'onPending'); // mount pending branch in off-dom container suspense.pendingBranch = newBranch; suspense.pendingId++; patch(null, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds, optimized); 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, slotScopeIds, 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 triggerEvent(vnode, 'onResolve'); }, fallback(fallbackVNode) { if (!suspense.pendingBranch) { return; } const { vnode, activeBranch, parentComponent, container, isSVG } = suspense; // invoke @fallback event triggerEvent(vnode, '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, slotScopeIds, optimized); setActiveBranch(suspense, fallbackVNode); }; const delayEnter = fallbackVNode.transition && fallbackVNode.transition.mode === 'out-in'; if (delayEnter) { activeBranch.transition.afterLeave = mountFallback; } suspense.isInFallback = true; // unmount current active branch unmount(activeBranch, parentComponent, null, // no suspense so unmount hooks fire now true // shouldRemove ); 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, false); 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, slotScopeIds, optimized, rendererInternals, hydrateNode) { / eslint-disable no-restricted-globals / const suspense = (vnode.suspense = createSuspenseBoundary(vnode, parentSuspense, parentComponent, node.parentNode, document.createElement(‘div’), null, isSVG, slotScopeIds, 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, slotScopeIds, optimized); if (suspense.deps === 0) {
suspense.resolve();
} return result; / eslint-enable no-restricted-globals / } function normalizeSuspenseChildren(vnode) { const { shapeFlag, children } = vnode; const isSlotChildren = shapeFlag & 32 / SLOTS_CHILDREN /; vnode.ssContent = normalizeSuspenseSlot(isSlotChildren ? children.default : children); vnode.ssFallback = isSlotChildren
? normalizeSuspenseSlot(children.fallback) : createVNode(Comment);
} function normalizeSuspenseSlot(s) { let block; if (isFunction(s)) {
const trackBlock = isBlockTreeEnabled && s._c; if (trackBlock) { // disableTracking: false // allow block tracking for compiled slots // (see ./componentRenderContext.ts) s._d = false; openBlock(); } s = s(); if (trackBlock) { s._d = true; block = currentBlock; closeBlock(); }
} if (isArray(s)) {
const singleChild = filterSingleRoot(s); if (!singleChild) { warn$1(`<Suspense> slots expect a single root node.`); } s = singleChild;
} s = normalizeVNode(s); if (block && !s.dynamicChildren) {
s.dynamicChildren = block.filter(c => c !== s);
} return 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);
} }
function provide(key, value) { if (!currentInstance) {
{ warn$1(`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 instance 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.call(instance.proxy) : defaultValue; } else { warn$1(`injection "${String(key)}" not found.`); }
} else {
warn$1(`inject() can only be used inside setup() or functional components.`);
} }
// Simple effect. function watchEffect(effect, options) { return doWatch(effect, null, options); } function watchPostEffect(effect, options) { return doWatch(effect, null, (Object.assign(options || {}, { flush: ‘post’ })
));
} function watchSyncEffect(effect, options) { return doWatch(effect, null, (Object.assign(options || {}, { flush: ‘sync’ })
));
} // initial value for watchers to trigger on undefined initial values const INITIAL_WATCHER_VALUE = {}; // implementation function watch(source, cb, options) { if (!isFunction(cb)) {
warn$1(`\`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) { if (!cb) {
if (immediate !== undefined) { warn$1(`watch() "immediate" option is only respected when using the ` + `watch(source, callback, options?) signature.`); } if (deep !== undefined) { warn$1(`watch() "deep" option is only respected when using the ` + `watch(source, callback, options?) signature.`); }
} const warnInvalidSource = (s) => {
warn$1(`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.`);
}; const instance = currentInstance; let getter; let forceTrigger = false; let isMultiSource = false; if (isRef(source)) {
getter = () => source.value; forceTrigger = isShallow(source);
} else if (isReactive(source)) {
getter = () => source; deep = true;
} else if (isArray(source)) {
isMultiSource = true; forceTrigger = source.some(isReactive); 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 callWithAsyncErrorHandling(source, instance, 3 /* WATCH_CALLBACK */, [onCleanup]); }; }
} else {
getter = NOOP; warnInvalidSource(source);
} if (cb && deep) {
const baseGetter = getter; getter = () => traverse(baseGetter());
} let cleanup; let onCleanup = (fn) => {
cleanup = effect.onStop = () => { callWithErrorHandling(fn, instance, 4 /* WATCH_CLEANUP */); };
}; let oldValue = isMultiSource ? [] : INITIAL_WATCHER_VALUE; const job = () => {
if (!effect.active) { return; } if (cb) { // watch(source, cb) const newValue = effect.run(); if (deep || forceTrigger || (isMultiSource ? newValue.some((v, i) => hasChanged(v, oldValue[i])) : hasChanged(newValue, oldValue)) || (false )) { // 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, onCleanup ]); oldValue = newValue; } } else { // watchEffect effect.run(); }
}; // 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; // the scheduler function gets called directly
} 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 effect = new ReactiveEffect(getter, scheduler); {
effect.onTrack = onTrack; effect.onTrigger = onTrigger;
} // initial run if (cb) {
if (immediate) { job(); } else { oldValue = effect.run(); }
} else if (flush === ‘post’) {
queuePostRenderEffect(effect.run.bind(effect), instance && instance.suspense);
} else {
effect.run();
} return () => {
effect.stop(); if (instance && instance.scope) { remove(instance.scope.effects, effect); }
}; } // this.$watch function instanceWatch(source, value, options) { const publicThis = this.proxy; const getter = isString(source)
? source.includes('.') ? createPathGetter(publicThis, source) : () => publicThis[source] : source.bind(publicThis, publicThis);
let cb; if (isFunction(value)) {
cb = value;
} else {
cb = value.handler; options = value;
} const cur = currentInstance; setCurrentInstance(this); const res = doWatch(getter, cb.bind(publicThis), options); if (cur) {
setCurrentInstance(cur);
} else {
unsetCurrentInstance();
} return res; } 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 traverse(value, seen) { if (!isObject(value) || value[“__v_skip” / SKIP /]) {
return value;
} seen = seen || new Set(); if (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 if (isPlainObject(value)) {
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$1('<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 && mode !== 'in-out' && mode !== 'out-in' && mode !== 'default') { warn$1(`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' && innerChild.type !== Comment) { 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; }
// 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, 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$1(`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({
name: 'AsyncComponentWrapper', __asyncLoader: load, get __asyncResolved() { return resolvedComp; }, 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; if (instance.parent && isKeepAlive(instance.parent.vnode)) { // parent is keep-alive, force update so the loaded component's // name is taken into account queueJob(instance.parent.update); } }) .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; }
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, props: {include: [String, RegExp, Array], exclude: [String, RegExp, Array], max: [String, Number]
}, setup(props, { slots }) {
const instance = getCurrentInstance(); // 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; // if the internal renderer is not registered, it indicates that this is server-side rendering, // for KeepAlive, we just need to render its children if (!sharedContext.renderer) { return slots.default; } const cache = new Map(); const keys = new Set(); let current = null; { instance.__v_cache = cache; } const parentSuspense = instance.suspense; 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, vnode.slotScopeIds, 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); { // Update components tree devtoolsComponentAdded(instance); } }; 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); { // Update components tree devtoolsComponentAdded(instance); } }; function unmount(vnode) { // reset the shapeFlag so it can be properly unmounted resetShapeFlag(vnode); _unmount(vnode, instance, parentSuspense, true); } 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$1(`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; // for async components, name check should be based in its loaded // inner component if available const name = getComponentName(isAsyncWrapper(vnode) ? vnode.type.__asyncResolved || {} : 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(',').includes(name);
} 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; } return 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; }
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); unsetCurrentInstance(); resetTracking(); return res; }); if (prepend) { hooks.unshift(wrappedHook); } else { hooks.push(wrappedHook); } return wrappedHook;
} else {
const apiName = toHandlerKey(ErrorTypeStrings[type].replace(/ hook$/, '')); warn$1(`${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 (except for serverPrefetch) (!isInSSRComponentSetup || lifecycle === “sp” / SERVER_PREFETCH /) && 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 onServerPrefetch = createHook(“sp” / SERVER_PREFETCH /); const onRenderTriggered = createHook(“rtg” / RENDER_TRIGGERED /); const onRenderTracked = createHook(“rtc” / RENDER_TRACKED /); function onErrorCaptured(hook, target = currentInstance) { injectHook(“ec” / ERROR_CAPTURED /, hook, target); }
function createDuplicateChecker() { const cache = Object.create(null); return (type, key) => {
if (cache[key]) { warn$1(`${type} property "${key}" is already defined in ${cache[key]}.`); } else { cache[key] = type; }
}; } let shouldCacheAccess = true; function applyOptions(instance) { const options = resolveMergedOptions(instance); const publicThis = instance.proxy; const ctx = instance.ctx; // do not cache property access on public proxy during state initialization shouldCacheAccess = false; // call beforeCreate first before accessing other options since // the hook may mutate resolved options (#2791) if (options.beforeCreate) {
callHook(options.beforeCreate, instance, "bc" /* BEFORE_CREATE */);
} const { // state data: dataOptions, computed: computedOptions, methods, watch: watchOptions, provide: provideOptions, inject: injectOptions, // lifecycle created, beforeMount, mounted, beforeUpdate, updated, activated, deactivated, beforeDestroy, beforeUnmount, destroyed, unmounted, render, renderTracked, renderTriggered, errorCaptured, serverPrefetch, // public API expose, inheritAttrs, // assets components, directives, filters } = options; 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 onthis
access) if (injectOptions) {resolveInjections(injectOptions, ctx, checkDuplicateProperties, instance.appContext.config.unwrapInjectedRef);
} if (methods) {
for (const key in methods) { const methodHandler = methods[key]; if (isFunction(methodHandler)) { // In dev mode, we use the `createRenderContext` function to define // methods to the proxy target, and those are read-only but // reconfigurable, so it needs to be redefined here { Object.defineProperty(ctx, key, { value: methodHandler.bind(publicThis), configurable: true, enumerable: true, writable: true }); } { checkDuplicateProperties("Methods" /* METHODS */, key); } } else { warn$1(`Method "${key}" has type "${typeof methodHandler}" in the component definition. ` + `Did you reference the function correctly?`); } }
} if (dataOptions) {
if (!isFunction(dataOptions)) { warn$1(`The data option must be a function. ` + `Plain object usage is no longer supported.`); } const data = dataOptions.call(publicThis, publicThis); if (isPromise(data)) { warn$1(`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$1(`data() should return an object.`); } else { instance.data = reactive(data); { for (const key in data) { checkDuplicateProperties("Data" /* DATA */, key); // expose data on ctx during dev if (key[0] !== '$' && key[0] !== '_') { Object.defineProperty(ctx, key, { configurable: true, enumerable: true, get: () => data[key], set: NOOP }); } } } }
} // state initialization complete at this point - start caching access shouldCacheAccess = true; 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$1(`Computed property "${key}" has no getter.`); } const set = !isFunction(opt) && isFunction(opt.set) ? opt.set.bind(publicThis) : () => { warn$1(`Write operation failed: computed property "${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) {
for (const key in watchOptions) { createWatcher(watchOptions[key], ctx, publicThis, key); }
} if (provideOptions) {
const provides = isFunction(provideOptions) ? provideOptions.call(publicThis) : provideOptions; Reflect.ownKeys(provides).forEach(key => { provide(key, provides[key]); });
} if (created) {
callHook(created, instance, "c" /* CREATED */);
} function registerLifecycleHook(register, hook) {
if (isArray(hook)) { hook.forEach(_hook => register(_hook.bind(publicThis))); } else if (hook) { register(hook.bind(publicThis)); }
} registerLifecycleHook(onBeforeMount, beforeMount); registerLifecycleHook(onMounted, mounted); registerLifecycleHook(onBeforeUpdate, beforeUpdate); registerLifecycleHook(onUpdated, updated); registerLifecycleHook(onActivated, activated); registerLifecycleHook(onDeactivated, deactivated); registerLifecycleHook(onErrorCaptured, errorCaptured); registerLifecycleHook(onRenderTracked, renderTracked); registerLifecycleHook(onRenderTriggered, renderTriggered); registerLifecycleHook(onBeforeUnmount, beforeUnmount); registerLifecycleHook(onUnmounted, unmounted); registerLifecycleHook(onServerPrefetch, serverPrefetch); if (isArray(expose)) {
if (expose.length) { const exposed = instance.exposed || (instance.exposed = {}); expose.forEach(key => { Object.defineProperty(exposed, key, { get: () => publicThis[key], set: val => (publicThis[key] = val) }); }); } else if (!instance.exposed) { instance.exposed = {}; }
} // options that are handled when creating the instance but also need to be // applied from mixins if (render && instance.render === NOOP) {
instance.render = render;
} if (inheritAttrs != null) {
instance.inheritAttrs = inheritAttrs;
} // asset options. if (components)
instance.components = components;
if (directives)
instance.directives = directives;
} function resolveInjections(injectOptions, ctx, checkDuplicateProperties = NOOP, unwrapRef = false) { if (isArray(injectOptions)) {
injectOptions = normalizeInject(injectOptions);
} for (const key in injectOptions) {
const opt = injectOptions[key]; let injected; if (isObject(opt)) { if ('default' in opt) { injected = inject(opt.from || key, opt.default, true /* treat default function as factory */); } else { injected = inject(opt.from || key); } } else { injected = inject(opt); } if (isRef(injected)) { // TODO remove the check in 3.3 if (unwrapRef) { Object.defineProperty(ctx, key, { enumerable: true, configurable: true, get: () => injected.value, set: v => (injected.value = v) }); } else { { warn$1(`injected property "${key}" is a ref and will be auto-unwrapped ` + `and no longer needs \`.value\` in the next minor release. ` + `To opt-in to the new behavior now, ` + `set \`app.config.unwrapInjectedRef = true\` (this config is ` + `temporary and will not be needed in the future.)`); } ctx[key] = injected; } } else { ctx[key] = injected; } { checkDuplicateProperties("Inject" /* INJECT */, key); }
} } function callHook(hook, instance, type) { callWithAsyncErrorHandling(isArray(hook)
? hook.map(h => h.bind(instance.proxy)) : hook.bind(instance.proxy), instance, type);
} 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$1(`Invalid watch handler specified by key "${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$1(`Invalid watch handler specified by key "${raw.handler}"`, handler); } }
} else {
warn$1(`Invalid watch option: "${key}"`, raw);
} } /**
- Resolve merged options and cache it on the component.
- This is done only once per-component since the merging does not involve
instances. */ function resolveMergedOptions(instance) { const base = instance.type; const { mixins, extends: extendsOptions } = base; const { mixins: globalMixins, optionsCache: cache, config: { optionMergeStrategies } } = instance.appContext; const cached = cache.get(base); let resolved; if (cached) {
resolved = cached;
} else if (!globalMixins.length && !mixins && !extendsOptions) {
{ resolved = base; }
} else {
resolved = {}; if (globalMixins.length) { globalMixins.forEach(m => mergeOptions(resolved, m, optionMergeStrategies, true)); } mergeOptions(resolved, base, optionMergeStrategies);
} cache.set(base, resolved); return resolved; } function mergeOptions(to, from, strats, asMixin = false) { const { mixins, extends: extendsOptions } = from; if (extendsOptions) {
mergeOptions(to, extendsOptions, strats, true);
} if (mixins) {
mixins.forEach((m) => mergeOptions(to, m, strats, true));
} for (const key in from) {
if (asMixin && key === 'expose') { warn$1(`"expose" option is ignored when declared in mixins or extends. ` + `It should only be declared in the base component itself.`); } else { const strat = internalOptionMergeStrats[key] || (strats && strats[key]); to[key] = strat ? strat(to[key], from[key]) : from[key]; }
} return to; } const internalOptionMergeStrats = { data: mergeDataFn, props: mergeObjectOptions, emits: mergeObjectOptions, // objects methods: mergeObjectOptions, computed: mergeObjectOptions, // lifecycle beforeCreate: mergeAsArray, created: mergeAsArray, beforeMount: mergeAsArray, mounted: mergeAsArray, beforeUpdate: mergeAsArray, updated: mergeAsArray, beforeDestroy: mergeAsArray, beforeUnmount: mergeAsArray, destroyed: mergeAsArray, unmounted: mergeAsArray, activated: mergeAsArray, deactivated: mergeAsArray, errorCaptured: mergeAsArray, serverPrefetch: mergeAsArray, // assets components: mergeObjectOptions, directives: mergeObjectOptions, // watch watch: mergeWatchOptions, // provide / inject provide: mergeDataFn, inject: mergeInject }; function mergeDataFn(to, from) { if (!from) {
return to;
} if (!to) {
return from;
} return function mergedDataFn() {
return (extend)(isFunction(to) ? to.call(this, this) : to, isFunction(from) ? from.call(this, this) : from);
}; } function mergeInject(to, from) { return mergeObjectOptions(normalizeInject(to), normalizeInject(from)); } function normalizeInject(raw) { if (isArray(raw)) {
const res = {}; for (let i = 0; i < raw.length; i++) { res[raw[i]] = raw[i]; } return res;
} return raw; } function mergeAsArray(to, from) { return to ? […new Set([].concat(to, from))] : from; } function mergeObjectOptions(to, from) { return to ? extend(extend(Object.create(null), to), from) : from; } function mergeWatchOptions(to, from) { if (!to)
return from;
if (!from)
return to;
const merged = extend(Object.create(null), to); for (const key in from) {
merged[key] = mergeAsArray(to[key], from[key]);
} return merged; }
function initProps(instance, rawProps, isStateful, // result of bitwise flag comparison isSSR = false) { const props = {}; const attrs = {}; def(attrs, InternalObjectKey, 1); instance.propsDefaults = Object.create(null); setFullProps(instance, rawProps, props, attrs); // ensure all declared prop keys are present for (const key in instance.propsOptions[0]) {
if (!(key in props)) { props[key] = undefined; }
} // validation {
validateProps(rawProps || {}, 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; let hasAttrsChanged = false; 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++) { let 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)) { if (value !== attrs[key]) { attrs[key] = value; hasAttrsChanged = true; } } else { const camelizedKey = camelize(key); props[camelizedKey] = resolvePropValue(options, rawCurrentProps, camelizedKey, value, instance, false /* isAbsent */); } } else { if (value !== attrs[key]) { attrs[key] = value; hasAttrsChanged = true; } } } }
} else {
// full props update. if (setFullProps(instance, rawProps, props, attrs)) { hasAttrsChanged = true; } // 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, rawCurrentProps, key, undefined, instance, true /* isAbsent */); } } 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) && (!false ))) { delete attrs[key]; hasAttrsChanged = true; } } }
} // trigger updates for $attrs in case it’s used in component slots if (hasAttrsChanged) {
trigger(instance, "set" /* SET */, '$attrs');
} {
validateProps(rawProps || {}, props, instance);
} } function setFullProps(instance, rawProps, props, attrs) { const [options, needCastKeys] = instance.propsOptions; let hasAttrsChanged = false; let rawCastValues; if (rawProps) {
for (let key in rawProps) { // key, ref are reserved and never passed down if (isReservedProp(key)) { continue; } const value = rawProps[key]; // 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)))) { if (!needCastKeys || !needCastKeys.includes(camelKey)) { props[camelKey] = value; } else { (rawCastValues || (rawCastValues = {}))[camelKey] = value; } } else if (!isEmitListener(instance.emitsOptions, key)) { if (!(key in attrs) || value !== attrs[key]) { attrs[key] = value; hasAttrsChanged = true; } } }
} if (needCastKeys) {
const rawCurrentProps = toRaw(props); const castValues = rawCastValues || EMPTY_OBJ; for (let i = 0; i < needCastKeys.length; i++) { const key = needCastKeys[i]; props[key] = resolvePropValue(options, rawCurrentProps, key, castValues[key], instance, !hasOwn(castValues, key)); }
} return hasAttrsChanged; } function resolvePropValue(options, props, key, value, instance, isAbsent) { 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)) { const { propsDefaults } = instance; if (key in propsDefaults) { value = propsDefaults[key]; } else { setCurrentInstance(instance); value = propsDefaults[key] = defaultValue.call(null, props); unsetCurrentInstance(); } } else { value = defaultValue; } } // boolean casting if (opt[0 /* shouldCast */]) { if (isAbsent && !hasDefault) { value = false; } else if (opt[1 /* shouldCastTrue */] && (value === '' || value === hyphenate(key))) { value = true; } }
} return value; } function normalizePropsOptions(comp, appContext, asMixin = false) { const cache = appContext.propsCache; const cached = cache.get(comp); if (cached) {
return cached;
} 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) {
cache.set(comp, EMPTY_ARR); return EMPTY_ARR;
} if (isArray(raw)) {
for (let i = 0; i < raw.length; i++) { if (!isString(raw[i])) { warn$1(`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$1(`invalid props options`, raw); } for (const key in raw) { const normalizedKey = camelize(key); if (validatePropName(normalizedKey)) { const opt = raw[key]; const prop = (normalized[normalizedKey] = isArray(opt) || isFunction(opt) ? { type: opt } : opt); if (prop) { const booleanIndex = getTypeIndex(Boolean, prop.type); const stringIndex = getTypeIndex(String, prop.type); prop[0 /* shouldCast */] = booleanIndex > -1; prop[1 /* shouldCastTrue */] = stringIndex < 0 || booleanIndex < stringIndex; // if the prop needs boolean casting or default value if (booleanIndex > -1 || hasOwn(prop, 'default')) { needCastKeys.push(normalizedKey); } } } }
} const res = [normalized, needCastKeys]; cache.set(comp, res); return res; } function validatePropName(key) { if (key[0] !== ‘$’) {
return true;
} else {
warn$1(`Invalid prop name: "${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] : ctor === null ? ‘null’ : ‘’; } function isSameType(a, b) { return getType(a) === getType(b); } function getTypeIndex(type, expectedTypes) { if (isArray(expectedTypes)) {
return expectedTypes.findIndex(t => isSameType(t, type));
} else if (isFunction(expectedTypes)) {
return isSameType(expectedTypes, type) ? 0 : -1;
} return -1; } /**
- dev only
*/
function validateProps(rawProps, props, instance) {
const resolvedValues = toRaw(props);
const options = instance.propsOptions[0];
for (const key in options) {
} } /**let opt = options[key]; if (opt == null) continue; validateProp(key, resolvedValues[key], opt, !hasOwn(rawProps, key) && !hasOwn(rawProps, hyphenate(key)));
- dev only
*/
function validateProp(name, value, prop, isAbsent) {
const { type, required, validator } = prop;
// required!
if (required && isAbsent) {
} // missing but optional if (value == null && !prop.required) {warn$1('Missing required prop: "' + name + '"'); return;
} // type check if (type != null && type !== true) {return;
} // custom validator if (validator && !validator(value)) {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$1(getInvalidTypeMessage(name, value, expectedTypes)); return; }
} } const isSimpleType = /#PURE/ makeMap(‘String,Number,Boolean,Function,Symbol,BigInt’); /**warn$1('Invalid prop: custom validator check failed for prop "' + name + '".');
- dev only
*/
function assertType(value, type) {
let valid;
const expectedType = getType(type);
if (isSimpleType(expectedType)) {
} else if (expectedType === ‘Object’) {const t = typeof value; valid = t === expectedType.toLowerCase(); // for primitive wrapper objects if (!valid && t === 'object') { valid = value instanceof type; }
} else if (expectedType === ‘Array’) {valid = isObject(value);
} else if (expectedType === ‘null’) {valid = isArray(value);
} else {valid = value === null;
} return {valid = value instanceof type;
}; } /**valid, expectedType
- dev only
*/
function getInvalidTypeMessage(name, value, expectedTypes) {
let message =
Invalid prop: type check failed for prop "${name}".
+
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 &&` Expected ${expectedTypes.map(capitalize).join(' | ')}`;
} message +=isExplicable(expectedType) && !isBoolean(expectedType, receivedType)) { message += ` with value ${expectedValue}`;
, got ${receivedType}
; // check if we need to specify received value if (isExplicable(receivedType)) {
} return message; } /**message += `with value ${receivedValue}.`;
- dev only
*/
function styleValue(value, type) {
if (type === ‘String’) {
} else if (type === ‘Number’) {return `"${value}"`;
} else {return `${Number(value)}`;
} } /**return `${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’); }
const isInternalKey = (key) => key[0] === ‘_’ || key === ‘$stable’; const normalizeSlotValue = (value) => isArray(value) ? value.map(normalizeVNode) : [normalizeVNode(value)]; const normalizeSlot = (key, rawSlot, ctx) => { const normalized = withCtx((…args) => {
if (currentInstance) { warn$1(`Slot "${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(...args));
}, ctx); normalized._c = false; return normalized; }; const normalizeObjectSlots = (rawSlots, slots, instance) => { 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$1(`Non-function value encountered for slot "${key}". ` + `Prefer function slots for better performance.`); } const normalized = normalizeSlotValue(value); slots[key] = () => normalized; }
} }; const normalizeVNodeSlots = (instance, children) => { if (!isKeepAlive(instance.vnode) &&
!(false )) { warn$1(`Non-function value encountered for default slot. ` + `Prefer function slots for better performance.`);
} const normalized = normalizeSlotValue(children); instance.slots.default = () => normalized; }; const initSlots = (instance, children) => { if (instance.vnode.shapeFlag & 32 / SLOTS_CHILDREN /) {
const type = children._; if (type) { // users can get the shallow readonly version of the slots object through `this.$slots`, // we should avoid the proxy object polluting the slots of the internal instance instance.slots = toRaw(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, optimized) => { 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 (optimized && 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); // #2893 // when rendering the optimized slots by manually written render function, // we need to delete the `slots._` flag if necessary to make subsequent updates reliable, // i.e. let the `renderSlot` create the bailed Fragment if (!optimized && type === 1 /* STABLE */) { delete slots._; } } } 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] ]) */ function validateDirectiveName(name) { if (isBuiltInDirective(name)) {
warn$1('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$1(`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 }; } if (dir.deep) { traverse(value); } 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; } let hook = binding.dir[name]; if (hook) { // disable tracking inside all lifecycle hooks // since they can potentially be called inside effects. pauseTracking(); callWithAsyncErrorHandling(hook, instance, 8 /* DIRECTIVE_HOOK */, [ vnode.el, binding, vnode, prevVNode ]); resetTracking(); }
} }
function createAppContext() { return {
app: null, config: { isNativeTag: NO, performance: false, globalProperties: {}, optionMergeStrategies: {}, errorHandler: undefined, warnHandler: undefined, compilerOptions: {} }, mixins: [], components: {}, directives: {}, provides: Object.create(null), optionsCache: new WeakMap(), propsCache: new WeakMap(), emitsCache: new WeakMap()
}; } let uid = 0; function createAppAPI(render, hydrate) { return function createApp(rootComponent, rootProps = null) {
if (rootProps != null && !isObject(rootProps)) { warn$1(`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++, _component: rootComponent, _props: rootProps, _container: null, _context: context, _instance: null, version, get config() { return context.config; }, set config(v) { { warn$1(`app.config cannot be replaced. Modify individual options instead.`); } }, use(plugin, ...options) { if (installedPlugins.has(plugin)) { warn$1(`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$1(`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); } else { warn$1('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$1(`Component "${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$1(`Directive "${name}" has already been registered in target app.`); } context.directives[name] = directive; return app; }, mount(rootContainer, isHydrate, isSVG) { 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, isSVG); }; } if (isHydrate && hydrate) { hydrate(vnode, rootContainer); } else { render(vnode, rootContainer, isSVG); } isMounted = true; app._container = rootContainer; rootContainer.__vue_app__ = app; { app._instance = vnode.component; devtoolsInitApp(app, version); } return getExposeProxy(vnode.component) || vnode.component.proxy; } else { warn$1(`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); { app._instance = null; devtoolsUnmountApp(app); } delete app._container.__vue_app__; } else { warn$1(`Cannot unmount an app that is not mounted.`); } }, provide(key, value) { if (key in context.provides) { warn$1(`App already provides property with key "${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;
}; }
/**
Function for handling a template ref */ function setRef(rawRef, oldRawRef, parentSuspense, vnode, isUnmount = false) { if (isArray(rawRef)) {
rawRef.forEach((r, i) => setRef(r, oldRawRef && (isArray(oldRawRef) ? oldRawRef[i] : oldRawRef), parentSuspense, vnode, isUnmount)); return;
} if (isAsyncWrapper(vnode) && !isUnmount) {
// when mounting async components, nothing needs to be done, // because the template ref is forwarded to inner component return;
} const refValue = vnode.shapeFlag & 4 / STATEFUL_COMPONENT /
? getExposeProxy(vnode.component) || vnode.component.proxy : vnode.el;
const value = isUnmount ? null : refValue; const { i: owner, r: ref } = rawRef; if (!owner) {
warn$1(`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; // dynamic ref changed. 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 (isFunction(ref)) {
callWithErrorHandling(ref, owner, 12 /* FUNCTION_REF */, [value, refs]);
} else {
const _isString = isString(ref); const _isRef = isRef(ref); if (_isString || _isRef) { const doSet = () => { if (rawRef.f) { const existing = _isString ? refs[ref] : ref.value; if (isUnmount) { isArray(existing) && remove(existing, refValue); } else { if (!isArray(existing)) { if (_isString) { refs[ref] = [refValue]; } else { ref.value = [refValue]; if (rawRef.k) refs[rawRef.k] = ref.value; } } else if (!existing.includes(refValue)) { existing.push(refValue); } } } else if (_isString) { refs[ref] = value; if (hasOwn(setupState, ref)) { setupState[ref] = value; } } else if (isRef(ref)) { ref.value = value; if (rawRef.k) refs[rawRef.k] = value; } else { warn$1('Invalid template ref type:', ref, `(${typeof ref})`); } }; if (value) { doSet.id = -1; queuePostRenderEffect(doSet, parentSuspense); } else { doSet(); } } else { warn$1('Invalid template ref type:', ref, `(${typeof ref})`); }
} }
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$1(`Attempting to hydrate existing markup but container is empty. ` + `Performing full mount instead.`); patch(null, vnode, container); flushPostFlushCbs(); return; } hasMismatch = false; hydrateNode(container.firstChild, vnode, null, 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, slotScopeIds, optimized = false) => {
const isFragmentStart = isComment(node) && node.data === '['; const onMismatch = () => handleMismatch(node, vnode, parentComponent, parentSuspense, slotScopeIds, 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$1(`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, slotScopeIds, optimized); } break; default: if (shapeFlag & 1 /* ELEMENT */) { if (domType !== 1 /* ELEMENT */ || vnode.type.toLowerCase() !== node.tagName.toLowerCase()) { nextNode = onMismatch(); } else { nextNode = hydrateElement(node, vnode, parentComponent, parentSuspense, slotScopeIds, 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. vnode.slotScopeIds = slotScopeIds; const container = parentNode(node); mountComponent(vnode, container, null, parentComponent, parentSuspense, isSVGContainer(container), optimized); // 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); // #3787 // if component is async, it may get moved / unmounted before its // inner component is loaded, so we need to give it a placeholder // vnode that matches its adopted DOM. if (isAsyncWrapper(vnode)) { let subTree; if (isFragmentStart) { subTree = createVNode(Fragment); subTree.anchor = nextNode ? nextNode.previousSibling : container.lastChild; } else { subTree = node.nodeType === 3 ? createTextVNode('') : createVNode('div'); } subTree.el = node; vnode.component.subTree = subTree; } } else if (shapeFlag & 64 /* TELEPORT */) { if (domType !== 8 /* COMMENT */) { nextNode = onMismatch(); } else { nextNode = vnode.type.hydrate(node, vnode, parentComponent, parentSuspense, slotScopeIds, optimized, rendererInternals, hydrateChildren); } } else if (shapeFlag & 128 /* SUSPENSE */) { nextNode = vnode.type.hydrate(node, vnode, parentComponent, parentSuspense, isSVGContainer(parentNode(node)), slotScopeIds, optimized, rendererInternals, hydrateNode); } else { warn$1('Invalid HostVNode type:', type, `(${typeof type})`); } } if (ref != null) { setRef(ref, null, parentSuspense, vnode); } return nextNode;
}; const hydrateElement = (el, vnode, parentComponent, parentSuspense, slotScopeIds, optimized) => {
optimized = optimized || !!vnode.dynamicChildren; const { type, props, patchFlag, shapeFlag, dirs } = vnode; // #4006 for form elements with non-string v-model value bindings // e.g. <option :value="obj">, <input type="checkbox" :true-value="1"> const forcePatchValue = (type === 'input' && dirs) || type === 'option'; // skip props & children if this is hoisted static nodes // #5405 in dev, always hydrate children for HMR { if (dirs) { invokeDirectiveHook(vnode, null, parentComponent, 'created'); } // props if (props) { if (forcePatchValue || !optimized || patchFlag & (16 /* FULL_PROPS */ | 32 /* HYDRATE_EVENTS */)) { for (const key in props) { if ((forcePatchValue && key.endsWith('value')) || (isOn(key) && !isReservedProp(key))) { patchProp(el, key, null, props[key], false, undefined, parentComponent); } } } else if (props.onClick) { // Fast path for click listeners (which is most often) to avoid // iterating through props. patchProp(el, 'onClick', null, props.onClick, false, undefined, parentComponent); } } // 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, slotScopeIds, optimized); let hasWarned = false; while (next) { hasMismatch = true; if (!hasWarned) { warn$1(`Hydration children mismatch in <${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$1(`Hydration text content mismatch in <${vnode.type}>:\n` + `- Client: ${el.textContent}\n` + `- Server: ${vnode.children}`); el.textContent = vnode.children; } } } return el.nextSibling;
}; const hydrateChildren = (node, parentVNode, container, parentComponent, parentSuspense, slotScopeIds, 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, slotScopeIds, optimized); } else if (vnode.type === Text && !vnode.children) { continue; } else { hasMismatch = true; if (!hasWarned) { warn$1(`Hydration children mismatch in <${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), slotScopeIds); } } return node;
}; const hydrateFragment = (node, vnode, parentComponent, parentSuspense, slotScopeIds, optimized) => {
const { slotScopeIds: fragmentSlotScopeIds } = vnode; if (fragmentSlotScopeIds) { slotScopeIds = slotScopeIds ? slotScopeIds.concat(fragmentSlotScopeIds) : fragmentSlotScopeIds; } const container = parentNode(node); const next = hydrateChildren(nextSibling(node), vnode, container, parentComponent, parentSuspense, slotScopeIds, 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, slotScopeIds, isFragment) => {
hasMismatch = true; warn$1(`Hydration node mismatch:\n- Client vnode:`, vnode.type, `\n- Server rendered DOM:`, node, node.nodeType === 3 /* TEXT */ ? `(text)` : isComment(node) && node.data === '[' ? `(start of fragment)` : ``); vnode.el = null; if (isFragment) { // remove excessive fragment nodes const end = locateClosingAsyncAnchor(node); while (true) { const next = nextSibling(node); if (next && next !== end) { remove(next); } else { break; } } } const next = nextSibling(node); const container = parentNode(node); remove(node); patch(null, vnode, container, next, parentComponent, parentSuspense, isSVGContainer(container), slotScopeIds); return next;
}; const locateClosingAsyncAnchor = (node) => {
let match = 0; while (node) { node = nextSibling(node); if (node && isComment(node)) { if (node.data === '[') match++; if (node.data === ']') { if (match === 0) { return nextSibling(node); } else { match--; } } } } return node;
}; return [hydrate, hydrateNode]; }
/ eslint-disable no-restricted-globals / let supported; let perf; function startMeasure(instance, type) { if (instance.appContext.config.performance && isSupported()) {
perf.mark(`vue-${type}-${instance.uid}`);
} {
devtoolsPerfStart(instance, type, supported ? perf.now() : Date.now());
} } function endMeasure(instance, type) { if (instance.appContext.config.performance && isSupported()) {
const startTag = `vue-${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);
} {
devtoolsPerfEnd(instance, type, supported ? perf.now() : Date.now());
} } function isSupported() { if (supported !== undefined) {
return supported;
} if (typeof window !== ‘undefined’ && window.performance) {
supported = true; perf = window.performance;
} else {
supported = false;
} return supported; }
const queuePostRenderEffect = queueEffectWithSuspense ; /**
- 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 DOMElement
interface. *- Custom renderers can pass in the platform specific types like this: *
- ``` js
- const { render, createApp } = createRenderer
({ - 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 target = getGlobalThis();
target.VUE = true;
{
} const { insert: hostInsert, remove: hostRemove, patchProp: hostPatchProp, 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 usesetDevtoolsHook(target.__VUE_DEVTOOLS_GLOBAL_HOOK__, target);
const xxx = () => {}
// style in order to prevent being inlined by minifiers. const patch = (n1, n2, container, anchor = null, parentComponent = null, parentSuspense = null, isSVG = false, slotScopeIds = null, optimized = isHmrUpdating ? false : !!n2.dynamicChildren) => {
}; const processText = (n1, n2, container, anchor) => {if (n1 === n2) { return; } // 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, slotScopeIds, optimized); break; default: if (shapeFlag & 1 /* ELEMENT */) { processElement(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized); } else if (shapeFlag & 6 /* COMPONENT */) { processComponent(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized); } else if (shapeFlag & 64 /* TELEPORT */) { type.process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, internals); } else if (shapeFlag & 128 /* SUSPENSE */) { type.process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, internals); } else { warn$1('Invalid VNode type:', type, `(${typeof type})`); } } // set ref if (ref != null && parentComponent) { setRef(ref, n1 && n1.ref, parentSuspense, n2 || n1, !n2); }
}; const processCommentNode = (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 mountStaticNode = (n2, container, anchor, isSVG) => {if (n1 == null) { hostInsert((n2.el = hostCreateComment(n2.children || '')), container, anchor); } else { // there's no support for dynamic comments n2.el = n1.el; }
}; /**[n2.el, n2.anchor] = hostInsertStaticContent(n2.children, container, anchor, isSVG, n2.el, n2.anchor);
- Dev / HMR only
*/
const patchStaticNode = (n1, n2, container, isSVG) => {
// static nodes are only patched during dev for HMR
if (n2.children !== n1.children) {
} else {const anchor = hostNextSibling(n1.anchor); // remove existing removeStaticNode(n1); [n2.el, n2.anchor] = hostInsertStaticContent(n2.children, container, anchor, isSVG);
} }; const moveStaticNode = ({ el, anchor }, container, nextSibling) => { let next; while (el && el !== anchor) {n2.el = n1.el; n2.anchor = n1.anchor;
} hostInsert(anchor, container, nextSibling); }; const removeStaticNode = ({ el, anchor }) => { let next; while (el && el !== anchor) {next = hostNextSibling(el); hostInsert(el, container, nextSibling); el = next;
} hostRemove(anchor); }; const processElement = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized) => { isSVG = isSVG || n2.type === ‘svg’; if (n1 == null) {next = hostNextSibling(el); hostRemove(el); el = next;
} else {mountElement(n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
} }; const mountElement = (vnode, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized) => { let el; let vnodeHook; const { type, props, shapeFlag, transition, patchFlag, dirs } = vnode; {patchElement(n1, n2, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
} {el = vnode.el = hostCreateElement(vnode.type, isSVG, props && props.is, props); // 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', slotScopeIds, optimized); } if (dirs) { invokeDirectiveHook(vnode, null, parentComponent, 'created'); } // props if (props) { for (const key in props) { if (key !== 'value' && !isReservedProp(key)) { hostPatchProp(el, key, null, props[key], isSVG, vnode.children, parentComponent, parentSuspense, unmountChildren); } } /** * Special case for setting value on DOM elements: * - it can be order-sensitive (e.g. should be set *after* min/max, #2325, #4024) * - it needs to be forced (#1471) * #2353 proposes adding another renderer option to configure this, but * the properties affects are so finite it is worth special casing it * here to reduce the complexity. (Special casing it also should not * affect non-DOM renderers) */ if ('value' in props) { hostPatchProp(el, 'value', null, props.value); } if ((vnodeHook = props.onVnodeBeforeMount)) { invokeVNodeHook(vnodeHook, parentComponent, vnode); } } // scopeId setScopeId(el, vnode, vnode.scopeId, slotScopeIds, parentComponent);
} if (dirs) {Object.defineProperty(el, '__vnode', { value: vnode, enumerable: false }); Object.defineProperty(el, '__vueParentComponent', { value: parentComponent, enumerable: false });
} // #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)) &&invokeDirectiveHook(vnode, null, parentComponent, 'beforeMount');
if (needCallTransitionHooks) {transition && !transition.persisted;
} hostInsert(el, container, anchor); if ((vnodeHook = props && props.onVnodeMounted) ||transition.beforeEnter(el);
} }; const setScopeId = (el, vnode, scopeId, slotScopeIds, parentComponent) => { if (scopeId) {needCallTransitionHooks || dirs) { queuePostRenderEffect(() => { vnodeHook && invokeVNodeHook(vnodeHook, parentComponent, vnode); needCallTransitionHooks && transition.enter(el); dirs && invokeDirectiveHook(vnode, null, parentComponent, 'mounted'); }, parentSuspense);
} if (slotScopeIds) {hostSetScopeId(el, scopeId);
} if (parentComponent) {for (let i = 0; i < slotScopeIds.length; i++) { hostSetScopeId(el, slotScopeIds[i]); }
} }; const mountChildren = (children, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, start = 0) => { for (let i = start; i < children.length; i++) {let subTree = parentComponent.subTree; if (subTree.patchFlag > 0 && subTree.patchFlag & 2048 /* DEV_ROOT_FRAGMENT */) { subTree = filterSingleRoot(subTree.children) || subTree; } if (vnode === subTree) { const parentVNode = parentComponent.vnode; setScopeId(el, parentVNode, parentVNode.scopeId, parentVNode.slotScopeIds, parentComponent.parent); }
} }; const patchElement = (n1, n2, parentComponent, parentSuspense, isSVG, slotScopeIds, 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; // disable recurse in beforeUpdate hooks parentComponent && toggleRecurse(parentComponent, false); if ((vnodeHook = newProps.onVnodeBeforeUpdate)) {const child = (children[i] = optimized ? cloneIfMounted(children[i]) : normalizeVNode(children[i])); patch(null, child, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
} if (dirs) {invokeVNodeHook(vnodeHook, parentComponent, n2, n1);
} parentComponent && toggleRecurse(parentComponent, true); if (isHmrUpdating) {invokeDirectiveHook(n2, n1, parentComponent, 'beforeUpdate');
} const areChildrenSVG = isSVG && n2.type !== ‘foreignObject’; if (dynamicChildren) {// HMR updated, force full diff patchFlag = 0; optimized = false; dynamicChildren = null;
} else if (!optimized) {patchBlockChildren(n1.dynamicChildren, dynamicChildren, el, parentComponent, parentSuspense, areChildrenSVG, slotScopeIds); if (parentComponent && parentComponent.type.__hmrId) { traverseStaticChildren(n1, n2); }
} if (patchFlag > 0) {// full diff patchChildren(n1, n2, el, null, parentComponent, parentSuspense, areChildrenSVG, slotScopeIds, false);
} else if (!optimized && dynamicChildren == null) {// 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]; // #1471 force patch value if (next !== prev || key === 'value') { 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); } }
} if ((vnodeHook = newProps.onVnodeUpdated) || dirs) {// unoptimized, full diff patchProps(el, n2, oldProps, newProps, parentComponent, parentSuspense, isSVG);
} }; // The fast path for blocks. const patchBlockChildren = (oldChildren, newChildren, fallbackContainer, parentComponent, parentSuspense, isSVG, slotScopeIds) => { for (let i = 0; i < newChildren.length; i++) {queuePostRenderEffect(() => { vnodeHook && invokeVNodeHook(vnodeHook, parentComponent, n2, n1); dirs && invokeDirectiveHook(n2, n1, parentComponent, 'updated'); }, parentSuspense);
} }; const patchProps = (el, vnode, oldProps, newProps, parentComponent, parentSuspense, isSVG) => { if (oldProps !== newProps) {const oldVNode = oldChildren[i]; const newVNode = newChildren[i]; // Determine the container (parent element) for the patch. const container = // oldVNode may be an errored async setup() component inside Suspense // which will not have a mounted element oldVNode.el && // - 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 */ | 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, slotScopeIds, true);
} }; const processFragment = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized) => { const fragmentStartAnchor = (n2.el = n1 ? n1.el : hostCreateText(‘’)); const fragmentEndAnchor = (n2.anchor = n1 ? n1.anchor : hostCreateText(‘’)); let { patchFlag, dynamicChildren, slotScopeIds: fragmentSlotScopeIds } = n2; if (isHmrUpdating) {for (const key in newProps) { // empty string is not valid prop if (isReservedProp(key)) continue; const next = newProps[key]; const prev = oldProps[key]; // defer patching value if (next !== prev && key !== 'value') { 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); } } } if ('value' in newProps) { hostPatchProp(el, 'value', oldProps.value, newProps.value); }
} // check if this is a slot fragment with :slotted scope ids if (fragmentSlotScopeIds) {// HMR updated, force full diff patchFlag = 0; optimized = false; dynamicChildren = null;
} if (n1 == null) {slotScopeIds = slotScopeIds ? slotScopeIds.concat(fragmentSlotScopeIds) : fragmentSlotScopeIds;
} else {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, slotScopeIds, optimized);
} }; const processComponent = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized) => { n2.slotScopeIds = slotScopeIds; if (n1 == null) {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, slotScopeIds); 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, slotScopeIds, optimized); }
} else {if (n2.shapeFlag & 512 /* COMPONENT_KEPT_ALIVE */) { parentComponent.ctx.activate(n2, container, anchor, isSVG, optimized); } else { mountComponent(n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized); }
} }; const mountComponent = (initialVNode, container, anchor, parentComponent, parentSuspense, isSVG, optimized) => { const instance = (initialVNode.component = createComponentInstance(initialVNode, parentComponent, parentSuspense)); if (instance.type.__hmrId) {updateComponent(n1, n2, optimized);
} {registerHMR(instance);
} // inject renderer internals for keepAlive if (isKeepAlive(initialVNode)) {pushWarningContext(initialVNode); startMeasure(instance, `mount`);
} // resolve props and slots for setup context {instance.ctx.renderer = internals;
} // setup() is async. This component relies on async logic to be resolved // before proceeding if (instance.asyncDep) {{ startMeasure(instance, `init`); } setupComponent(instance); { endMeasure(instance, `init`); }
} setupRenderEffect(instance, initialVNode, container, anchor, parentSuspense, isSVG, optimized); {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;
} }; const updateComponent = (n1, n2, optimized) => { const instance = (n2.component = n1.component); if (shouldUpdateComponent(n1, n2, optimized)) {popWarningContext(); endMeasure(instance, `mount`);
} else {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. instance.update(); }
} }; const setupRenderEffect = (instance, initialVNode, container, anchor, parentSuspense, isSVG, optimized) => { const componentUpdateFn = () => {// no update needed. just copy over properties n2.component = n1.component; n2.el = n1.el; instance.vnode = n2;
}; // create reactive effect for rendering const effect = (instance.effect = new ReactiveEffect(componentUpdateFn, () => queueJob(instance.update), instance.scope // track it in component’s effect scope )); const update = (instance.update = effect.run.bind(effect)); update.id = instance.uid; // allowRecurse // #1801, #2043 component render effects should allow recursive updates toggleRecurse(instance, true); {if (!instance.isMounted) { let vnodeHook; const { el, props } = initialVNode; const { bm, m, parent } = instance; const isAsyncWrapperVNode = isAsyncWrapper(initialVNode); toggleRecurse(instance, false); // beforeMount hook if (bm) { invokeArrayFns(bm); } // onVnodeBeforeMount if (!isAsyncWrapperVNode && (vnodeHook = props && props.onVnodeBeforeMount)) { invokeVNodeHook(vnodeHook, parent, initialVNode); } toggleRecurse(instance, true); if (el && hydrateNode) { // vnode has adopted host node - perform hydration instead of mount. const hydrateSubTree = () => { { startMeasure(instance, `render`); } instance.subTree = renderComponentRoot(instance); { endMeasure(instance, `render`); } { startMeasure(instance, `hydrate`); } hydrateNode(el, instance.subTree, instance, parentSuspense, null); { endMeasure(instance, `hydrate`); } }; if (isAsyncWrapperVNode) { initialVNode.type.__asyncLoader().then( // note: we are moving the render call into an async callback, // which means it won't track dependencies - but it's ok because // a server-rendered async wrapper is already in resolved state // and it will never need to change. () => !instance.isUnmounted && hydrateSubTree()); } else { hydrateSubTree(); } } else { { startMeasure(instance, `render`); } const subTree = (instance.subTree = renderComponentRoot(instance)); { endMeasure(instance, `render`); } { 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 (!isAsyncWrapperVNode && (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 if (initialVNode.shapeFlag & 256 /* COMPONENT_SHOULD_KEEP_ALIVE */) { instance.a && queuePostRenderEffect(instance.a, parentSuspense); } instance.isMounted = true; { devtoolsComponentAdded(instance); } // #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); } // Disallow component effect recursion during pre-lifecycle hooks. toggleRecurse(instance, false); 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); } toggleRecurse(instance, true); // 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(); } }
} update(); }; 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, optimized); pauseTracking(); // props update may have triggered pre-flush watchers. // flush them before the render update. flushPreFlushCbs(undefined, instance.update); resetTracking(); }; const patchChildren = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, 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) {effect.onTrack = instance.rtc ? e => invokeArrayFns(instance.rtc, e) : void 0; effect.onTrigger = instance.rtg ? e => invokeArrayFns(instance.rtg, e) : void 0; // @ts-ignore (for scheduler) update.ownerInstance = instance;
} // children has 3 possibilities: text, array or no children. if (shapeFlag & 8 / TEXT_CHILDREN /) {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, slotScopeIds, optimized); return; } else if (patchFlag & 256 /* UNKEYED_FRAGMENT */) { // unkeyed patchUnkeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized); return; }
} else {// text children fast path if (prevShapeFlag & 16 /* ARRAY_CHILDREN */) { unmountChildren(c1, parentComponent, parentSuspense); } if (c2 !== c1) { hostSetElementText(container, c2); }
} }; const patchUnkeyedChildren = (c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, 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++) {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, slotScopeIds, 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, slotScopeIds, optimized); } }
} if (oldLength > newLength) {const nextChild = (c2[i] = optimized ? cloneIfMounted(c2[i]) : normalizeVNode(c2[i])); patch(c1[i], nextChild, container, null, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
} else {// remove old unmountChildren(c1, parentComponent, parentSuspense, true, false, commonLength);
} }; // can be all-keyed or mixed const patchKeyedChildren = (c1, c2, container, parentAnchor, parentComponent, parentSuspense, isSVG, slotScopeIds, 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) {// mount new mountChildren(c2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, commonLength);
} // 2. sync from end // a (b c) // d e (b c) 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, slotScopeIds, optimized); } else { break; } i++;
} // 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) {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, slotScopeIds, optimized); } else { break; } e1--; e2--;
} // 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) {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, slotScopeIds, optimized); 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 {while (i <= e1) { unmount(c1[i], parentComponent, parentSuspense, true); i++; }
} }; const move = (vnode, container, anchor, moveType, parentSuspense = null) => { const { el, type, transition, children, shapeFlag } = vnode; if (shapeFlag & 6 / COMPONENT /) {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$1(`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, slotScopeIds, 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, slotScopeIds, optimized); } 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--; } } }
} if (shapeFlag & 128 / SUSPENSE /) {move(vnode.component.subTree, container, anchor, moveType); return;
} if (shapeFlag & 64 / TELEPORT /) {vnode.suspense.move(container, anchor, moveType); return;
} if (type === Fragment) {type.move(vnode, container, anchor, internals); return;
} if (type === Static) {hostInsert(el, container, anchor); for (let i = 0; i < children.length; i++) { move(children[i], container, anchor, moveType); } hostInsert(vnode.anchor, container, anchor); return;
} // single nodes const needTransition = moveType !== 2 / REORDER / &&moveStaticNode(vnode, container, anchor); return;
if (needTransition) {shapeFlag & 1 /* ELEMENT */ && transition;
} else {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(); } }
} }; const unmount = (vnode, parentComponent, parentSuspense, doRemove = false, optimized = false) => { const { type, props, ref, children, dynamicChildren, shapeFlag, patchFlag, dirs } = vnode; // unset ref if (ref != null) {hostInsert(el, container, anchor);
} if (shapeFlag & 256 / COMPONENT_SHOULD_KEEP_ALIVE /) {setRef(ref, null, parentSuspense, vnode, true);
} const shouldInvokeDirs = shapeFlag & 1 / ELEMENT / && dirs; const shouldInvokeVnodeHook = !isAsyncWrapper(vnode); let vnodeHook; if (shouldInvokeVnodeHook &&parentComponent.ctx.deactivate(vnode); return;
} if (shapeFlag & 6 / COMPONENT /) {(vnodeHook = props && props.onVnodeBeforeUnmount)) { invokeVNodeHook(vnodeHook, parentComponent, vnode);
} else {unmountComponent(vnode.component, parentSuspense, doRemove);
} if ((shouldInvokeVnodeHook &&if (shapeFlag & 128 /* SUSPENSE */) { vnode.suspense.unmount(parentSuspense, doRemove); return; } if (shouldInvokeDirs) { invokeDirectiveHook(vnode, null, parentComponent, 'beforeUnmount'); } if (shapeFlag & 64 /* TELEPORT */) { vnode.type.remove(vnode, parentComponent, parentSuspense, optimized, internals, doRemove); } else 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 */ | 256 /* UNKEYED_FRAGMENT */)) || (!optimized && shapeFlag & 16 /* ARRAY_CHILDREN */)) { unmountChildren(children, parentComponent, parentSuspense); } if (doRemove) { remove(vnode); }
} }; const remove = vnode => { const { type, el, anchor, transition } = vnode; if (type === Fragment) {(vnodeHook = props && props.onVnodeUnmounted)) || shouldInvokeDirs) { queuePostRenderEffect(() => { vnodeHook && invokeVNodeHook(vnodeHook, parentComponent, vnode); shouldInvokeDirs && invokeDirectiveHook(vnode, null, parentComponent, 'unmounted'); }, parentSuspense);
} if (type === Static) {removeFragment(el, anchor); return;
} const performRemove = () => {removeStaticNode(vnode); return;
}; if (vnode.shapeFlag & 1 / ELEMENT / &&hostRemove(el); if (transition && !transition.persisted && transition.afterLeave) { transition.afterLeave(); }
} else {transition && !transition.persisted) { const { leave, delayLeave } = transition; const performLeave = () => leave(el, performRemove); if (delayLeave) { delayLeave(vnode.el, performRemove, performLeave); } else { performLeave(); }
} }; const removeFragment = (cur, end) => { // For fragments, directly remove all contained DOM nodes. // (fragment child nodes cannot have transition) let next; while (cur !== end) {performRemove();
} hostRemove(end); }; const unmountComponent = (instance, parentSuspense, doRemove) => { if (instance.type.__hmrId) {next = hostNextSibling(cur); hostRemove(cur); cur = next;
} const { bum, scope, update, subTree, um } = instance; // beforeUnmount hook if (bum) {unregisterHMR(instance);
} // stop effects in component scope scope.stop(); // update may be null if a component is unmounted before its async // setup has resolved. if (update) {invokeArrayFns(bum);
} // unmounted hook if (um) {// so that scheduler will no longer invoke it update.active = false; unmount(subTree, instance, parentSuspense, doRemove);
} queuePostRenderEffect(() => {queuePostRenderEffect(um, parentSuspense);
}, 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 &&instance.isUnmounted = true;
} {parentSuspense.pendingBranch && !parentSuspense.isUnmounted && instance.asyncDep && !instance.asyncResolved && instance.suspenseId === parentSuspense.pendingId) { parentSuspense.deps--; if (parentSuspense.deps === 0) { parentSuspense.resolve(); }
} }; const unmountChildren = (children, parentComponent, parentSuspense, doRemove = false, optimized = false, start = 0) => { for (let i = start; i < children.length; i++) {devtoolsComponentRemoved(instance);
} }; const getNextHostNode = vnode => { if (vnode.shapeFlag & 6 / COMPONENT /) {unmount(children[i], parentComponent, parentSuspense, doRemove, optimized);
} if (vnode.shapeFlag & 128 / SUSPENSE /) {return getNextHostNode(vnode.component.subTree);
} return hostNextSibling((vnode.anchor || vnode.el)); }; const render = (vnode, container, isSVG) => { if (vnode == null) {return vnode.suspense.next();
} else {if (container._vnode) { unmount(container._vnode, null, null, true); }
} 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 toggleRecurse({ effect, update }, allowed) { effect.allowRecurse = update.allowRecurse = allowed; } /**patch(container._vnode || null, vnode, container, null, null, null, isSVG);
- Dev / HMR only
*/
const patchStaticNode = (n1, n2, container, isSVG) => {
// static nodes are only patched during dev for HMR
if (n2.children !== n1.children) {
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 be moved. Therefore, in order to ensure correct move
position, el should be inherited from previous nodes. */ 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) >> 1; 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$1(`Current renderer does not support string target for Teleports. ` + `(missing querySelector renderer option)`); return null; } else { const target = select(targetSelector); if (!target) { warn$1(`Failed to locate Teleport target with selector "${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$1(`Invalid Teleport target: ${targetSelector}`); } return targetSelector;
} }; const TeleportImpl = { __isTeleport: true, process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, internals) {
const { mc: mountChildren, pc: patchChildren, pbc: patchBlockChildren, o: { insert, querySelector, createText, createComment } } = internals; const disabled = isTeleportDisabled(n2.props); let { shapeFlag, children, dynamicChildren } = n2; // #3302 // HMR updated, force full diff if (isHmrUpdating) { optimized = false; dynamicChildren = null; } 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$1('Invalid Teleport target on mount:', target, `(${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, slotScopeIds, 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 (dynamicChildren) { // fast path when the teleport happens to be a block root patchBlockChildren(n1.dynamicChildren, dynamicChildren, currentContainer, parentComponent, parentSuspense, isSVG, slotScopeIds); // 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, slotScopeIds, false); } 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$1('Invalid Teleport target on update:', target, `(${typeof target})`); } } else if (wasDisabled) { // disabled -> enabled // move into teleport target moveTeleport(n2, target, targetAnchor, internals, 1 /* TOGGLE */); } } }
}, remove(vnode, parentComponent, parentSuspense, optimized, { um: unmount, o: { remove: hostRemove } }, doRemove) {
const { shapeFlag, children, anchor, targetAnchor, target, props } = vnode; if (target) { hostRemove(targetAnchor); } // an unmounted teleport should always remove its children if not disabled if (doRemove || !isTeleportDisabled(props)) { hostRemove(anchor); if (shapeFlag & 16 /* ARRAY_CHILDREN */) { for (let i = 0; i < children.length; i++) { const child = children[i]; unmount(child, parentComponent, parentSuspense, true, !!child.dynamicChildren); } } }
}, 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, slotScopeIds, 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, slotScopeIds, optimized); vnode.targetAnchor = targetNode; } else { vnode.anchor = nextSibling(node); vnode.targetAnchor = hydrateChildren(targetNode, vnode, target, parentComponent, parentSuspense, slotScopeIds, 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, maybeSelfReference) { return resolveAsset(COMPONENTS, name, true, maybeSelfReference) || name; } const NULL_DYNAMIC_COMPONENT = Symbol(); /*
- @private
*/
function resolveDynamicComponent(component) {
if (isString(component)) {
} else {return resolveAsset(COMPONENTS, component, false) || component;
} } /**// 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, maybeSelfReference = false) { const instance = currentRenderingInstance || currentInstance; if (instance) {
const Component = instance.type; // explicit self name has highest priority if (type === COMPONENTS) { 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 which is resolved for options API resolve(instance[type] || Component[type], name) || // global registration resolve(instance.appContext[type], name); if (!res && maybeSelfReference) { // fallback to implicit self-reference return Component; } if (warnMissing && !res) { const extra = type === COMPONENTS ? `\nIf this is a native custom element, make sure to exclude it from ` + `component resolution via compilerOptions.isCustomElement.` : ``; warn$1(`Failed to resolve ${type.slice(0, -1)}: ${name}${extra}`); } return res;
} else {
warn$1(`resolve${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 ofcreateBlock
- 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 isBlockTreeEnabled = 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) {
isBlockTreeEnabled += value;
}
function setupBlock(vnode) {
// save current block children on the block vnode
vnode.dynamicChildren =
// close block closeBlock(); // a block is always going to be patched, so track it as a child of its // parent block if (isBlockTreeEnabled > 0 && currentBlock) {isBlockTreeEnabled > 0 ? currentBlock || EMPTY_ARR : null;
} return vnode; } /**currentBlock.push(vnode);
- @private / function createElementBlock(type, props, children, patchFlag, dynamicProps, shapeFlag) { return setupBlock(createBaseVNode(type, props, children, patchFlag, dynamicProps, shapeFlag, true / isBlock /)); } /*
- 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) {
return setupBlock(createVNode(type, props, children, patchFlag, dynamicProps, true / isBlock: prevent a block from tracking itself /));
}
function isVNode(value) {
return value ? value.__v_isVNode === true : false;
}
function isSameVNodeType(n1, n2) {
if (n2.shapeFlag & 6 / COMPONENT */ &&
} return n1.type === n2.type && n1.key === n2.key; } let vnodeArgsTransformer; /**hmrDirtyComponents.has(n2.type)) { // HMR only: if the component has been hot-updated, force a reload. return false;
- 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
}; const InternalObjectKey =? vnodeArgsTransformer(args, currentRenderingInstance) : args));
__vInternal
; const normalizeKey = ({ key }) => key != null ? key : null; const normalizeRef = ({ ref, ref_key, ref_for }) => { return (ref != null
}; function createBaseVNode(type, props = null, children = null, patchFlag = 0, dynamicProps = null, shapeFlag = type === Fragment ? 0 : 1 / ELEMENT /, isBlockNode = false, needFullChildrenNormalization = false) { const vnode = {? isString(ref) || isRef(ref) || isFunction(ref) ? { i: currentRenderingInstance, r: ref, k: ref_key, f: !!ref_for } : ref : null);
}; if (needFullChildrenNormalization) {__v_isVNode: true, __v_skip: true, type, props, key: props && normalizeKey(props), ref: props && normalizeRef(props), scopeId: currentScopeId, slotScopeIds: null, children, 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
} else if (children) {normalizeChildren(vnode, children); // normalize suspense children if (shapeFlag & 128 /* SUSPENSE */) { type.normalize(vnode); }
} // validate key if (vnode.key !== vnode.key) {// compiled element vnode - if children is passed, only possible types are // string or Array. vnode.shapeFlag |= isString(children) ? 8 /* TEXT_CHILDREN */ : 16 /* ARRAY_CHILDREN */;
} // track vnode for block tree if (isBlockTreeEnabled > 0 &&warn$1(`VNode created with invalid key (NaN). VNode type:`, vnode.type);
} return vnode; } const createVNode = (createVNodeWithArgsTransform ); function _createVNode(type, props = null, children = null, patchFlag = 0, dynamicProps = null, isBlockNode = false) { if (!type || type === NULL_DYNAMIC_COMPONENT) {// 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. (vnode.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. vnode.patchFlag !== 32 /* HYDRATE_EVENTS */) { currentBlock.push(vnode);
} if (isVNode(type)) {if (!type) { warn$1(`Invalid vnode type when creating vnode: ${type}.`); } type = Comment;
} // class component normalization. if (isClassComponent(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 & style normalization. if (props) {type = type.__vccOpts;
} // encode the vnode type information into a bitmap const shapeFlag = isString(type)// for reactive or proxy objects, we need to clone it to enable mutation. props = guardReactiveProps(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); }
if (shapeFlag & 4 / STATEFUL_COMPONENT / && isProxy(type)) {? 1 /* ELEMENT */ : isSuspense(type) ? 128 /* SUSPENSE */ : isTeleport(type) ? 64 /* TELEPORT */ : isObject(type) ? 4 /* STATEFUL_COMPONENT */ : isFunction(type) ? 2 /* FUNCTIONAL_COMPONENT */ : 0;
} return createBaseVNode(type, props, children, patchFlag, dynamicProps, shapeFlag, isBlockNode, true); } function guardReactiveProps(props) { if (!props)type = toRaw(type); warn$1(`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);
return isProxy(props) || InternalObjectKey in propsreturn null;
} 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, children } = vnode; const mergedProps = extraProps ? mergeProps(props || {}, extraProps) : props; const cloned = {? extend({}, props) : props;
}; return cloned; } /**__v_isVNode: true, __v_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, slotScopeIds: vnode.slotScopeIds, children: patchFlag === -1 /* HOISTED */ && isArray(children) ? children.map(deepCloneVNode) : 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: preserve 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
- Dev only, for HMR of hoisted vnodes reused in v-for
- https://github.com/vitejs/vite/issues/2022
*/
function deepCloneVNode(vnode) {
const cloned = cloneVNode(vnode);
if (isArray(vnode.children)) {
} return cloned; } /**cloned.children = vnode.children.map(deepCloneVNode);
- @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, // #3666, avoid reference pollution when reusing vnode child.slice());
} else if (typeof child === ‘object’) {
// already vnode, this should be the most common since compiled templates // always produce all-vnode children arrays return cloneIfMounted(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.memo ? 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 */ | 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 && (slot._d = false); normalizeChildren(vnode, slot()); slot._c && (slot._d = true); } 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.slots._ === 1 /* STABLE */) { children._ = 1 /* STABLE */; } else { children._ = 2 /* DYNAMIC */; vnode.patchFlag |= 1024 /* DYNAMIC_SLOTS */; } } }
} 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 = {}; for (let i = 0; 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 (incoming && existing !== incoming && !(isArray(existing) && existing.includes(incoming))) { ret[key] = existing ? [].concat(existing, incoming) : incoming; } } else if (key !== '') { ret[key] = toMerge[key]; } }
} return ret; } function invokeVNodeHook(hook, instance, vnode, prevVNode = null) { callWithAsyncErrorHandling(hook, instance, 7 / VNODE_HOOK /, [
vnode, prevVNode
]); }
/**
Actual implementation */ function renderList(source, renderItem, cache, index) { let ret; const cached = (cache && cache[index]); 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, undefined, cached && cached[i]); }
} else if (typeof source === ‘number’) {
if (!Number.isInteger(source)) { warn$1(`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, undefined, cached && cached[i]); }
} else if (isObject(source)) {
if (source[Symbol.iterator]) { ret = Array.from(source, (item, i) => renderItem(item, i, undefined, cached && cached[i])); } 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, cached && cached[i]); } }
} else {
ret = [];
} if (cache) {
cache[index] = ret;
} 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; }
/**
- 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, noSlotted) { if (currentRenderingInstance.isCE) {
return createVNode('slot', name === 'default' ? null : { name }, fallback && fallback());
} let slot = slots[name]; if (slot && slot.length > 1) {
warn$1(`SSR-optimized slot function detected in a non-SSR-optimized render ` + `function. You need to mark this component with $dynamic-slots in the ` + `parent template.`); slot = () => [];
} // a compiled slot disables block tracking by default to avoid manual // invocation interfering with template-based block tracking, but in //
renderSlot
we can be sure that it’s template-based so we can force // enable it. if (slot && slot._c) {slot._d = false;
} openBlock(); const validSlotContent = slot && ensureValidVNode(slot(props)); const rendered = createBlock(Fragment, { key: props.key ||
_${name}
}, validSlotContent || (fallback ? fallback() : []), validSlotContent && slots._ === 1 / STABLE /? 64 /* STABLE_FRAGMENT */ : -2 /* BAIL */);
if (!noSlotted && rendered.scopeId) {
rendered.slotScopeIds = [rendered.scopeId + '-s'];
} if (slot && slot._c) {
slot._d = true;
} 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;
}
/**
- For prefixing keys in v-on=”obj” with “on”
@private */ function toHandlers(obj) { const ret = {}; if (!isObject(obj)) {
warn$1(`v-on with no argument expects an object value.`); return ret;
} for (const key in obj) {
ret[toHandlerKey(key)] = obj[key];
} return ret; }
/**
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) => { if (!i)
return null;
if (isStatefulComponent(i))
return getExposeProxy(i) || i.proxy;
return 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 => getPublicInstance(i.root), $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; // for internal formatters to know that this is a Vue instance if (key === '__isVue') { return true; } // prioritize <script setup> bindings during dev. // this allows even properties that start with _ or $ to be used - so that // it aligns with the production behavior where the render fn is inlined and // indeed has access to all declared variables. if (setupState !== EMPTY_OBJ && setupState.__isScriptSetup && hasOwn(setupState, key)) { return setupState[key]; } // 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 1 /* SETUP */: return setupState[key]; case 2 /* DATA */: return data[key]; case 4 /* CONTEXT */: return ctx[key]; case 3 /* PROPS */: return props[key]; // default: just fallthrough } } else if (setupState !== EMPTY_OBJ && hasOwn(setupState, key)) { accessCache[key] = 1 /* SETUP */; return setupState[key]; } else if (data !== EMPTY_OBJ && hasOwn(data, key)) { accessCache[key] = 2 /* 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] = 3 /* PROPS */; return props[key]; } else if (ctx !== EMPTY_OBJ && hasOwn(ctx, key)) { accessCache[key] = 4 /* CONTEXT */; return ctx[key]; } else if (shouldCacheAccess) { accessCache[key] = 0 /* 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 `$` accessCache[key] = 4 /* CONTEXT */; return ctx[key]; } else if ( // global properties ((globalProperties = appContext.config.globalProperties), hasOwn(globalProperties, key))) { { return globalProperties[key]; } } else if (currentRenderingInstance && (!isString(key) || // #1091 avoid internal isRef/isVNode checks on component instance leading // to infinite warning loop key.indexOf('__v') !== 0)) { if (data !== EMPTY_OBJ && (key[0] === '$' || key[0] === '_') && hasOwn(data, key)) { warn$1(`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 if (instance === currentRenderingInstance) { warn$1(`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; return true; } else if (data !== EMPTY_OBJ && hasOwn(data, key)) { data[key] = value; return true; } else if (hasOwn(instance.props, key)) { warn$1(`Attempting to mutate prop "${key}". Props are readonly.`, instance); return false; } if (key[0] === '$' && key.slice(1) in instance) { warn$1(`Attempting to mutate public property "${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] || (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));
}, defineProperty(target, key, descriptor) {
if (descriptor.get != null) { this.set(target, key, descriptor.get(), null); } else if (descriptor.value != null) { this.set(target, key, descriptor.value, null); } return Reflect.defineProperty(target, key, descriptor);
} }; { PublicInstanceProxyHandlers.ownKeys = (target) => {
warn$1(`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 = /#PURE/ 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$1(`Property ${JSON.stringify(key)} should not start with _ which is a reserved prefix for Vue internals.`); } return has;
} }); // dev only // In dev mode, the proxy target exposes the same properties as seen on
this
// for easier console inspection. In prod mode it will be an empty object so // these properties definitions can be skipped. function createDevRenderContext(instance) { const target = {}; // expose internal instance for proxy handlers Object.defineProperty(target,_
, {configurable: true, enumerable: false, get: () => instance
}); // expose public properties Object.keys(publicPropertiesMap).forEach(key => {
Object.defineProperty(target, key, { configurable: true, enumerable: false, get: () => publicPropertiesMap[key](instance), // intercepted by the proxy so no need for implementation, // but needed to prevent set errors set: NOOP });
}); return target; } // dev only function exposePropsOnRenderContext(instance) { const { ctx, propsOptions: [propsOptions] } = instance; if (propsOptions) {
Object.keys(propsOptions).forEach(key => { Object.defineProperty(ctx, key, { enumerable: true, configurable: true, get: () => instance.props[key], set: NOOP }); });
} } // dev only function exposeSetupStateOnRenderContext(instance) { const { ctx, setupState } = instance; Object.keys(toRaw(setupState)).forEach(key => {
if (!setupState.__isScriptSetup) { if (key[0] === '$' || key[0] === '_') { warn$1(`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$1 = 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$1++, vnode, type, parent, appContext, root: null, next: null, subTree: null, effect: null, update: null, scope: new EffectScope(true /* detached */), render: null, proxy: null, exposed: null, exposeProxy: null, withProxy: 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, // props default value propsDefaults: EMPTY_OBJ, // inheritAttrs inheritAttrs: type.inheritAttrs, // 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, sp: null
}; {
instance.ctx = createDevRenderContext(instance);
} instance.root = parent ? parent.root : instance; instance.emit = emit$1.bind(null, instance); // apply custom element special handling if (vnode.ce) {
vnode.ce(instance);
} return instance; } let currentInstance = null; const getCurrentInstance = () => currentInstance || currentRenderingInstance; const setCurrentInstance = (instance) => { currentInstance = instance; instance.scope.on(); }; const unsetCurrentInstance = () => { currentInstance && currentInstance.scope.off(); currentInstance = null; }; const isBuiltInTag = /#PURE/ makeMap(‘slot,component’); function validateComponentName(name, config) { const appIsNativeTag = config.isNativeTag || NO; if (isBuiltInTag(name) || appIsNativeTag(name)) {
warn$1('Do not use built-in or reserved HTML elements as component id: ' + name);
} } function isStatefulComponent(instance) { return instance.vnode.shapeFlag & 4 / STATEFUL_COMPONENT /; } let isInSSRComponentSetup = false; function setupComponent(instance, isSSR = false) { isInSSRComponentSetup = isSSR; const { props, children } = instance.vnode; const isStateful = isStatefulComponent(instance); 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]); } } if (Component.compilerOptions && isRuntimeOnly()) { warn$1(`"compilerOptions" is only supported when using a build of Vue that ` + `includes the runtime compiler. Since you are using a runtime-only ` + `build, the options should be passed via your build tool config instead.`); }
} // 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 = markRaw(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); setCurrentInstance(instance); pauseTracking(); const setupResult = callWithErrorHandling(setup, instance, 0 /* SETUP_FUNCTION */, [shallowReadonly(instance.props) , setupContext]); resetTracking(); unsetCurrentInstance(); if (isPromise(setupResult)) { setupResult.then(unsetCurrentInstance, unsetCurrentInstance); if (isSSR) { // return the promise so server-renderer can wait on it return setupResult .then((resolvedResult) => { handleSetupResult(instance, resolvedResult, isSSR); }) .catch(e => { handleError(e, instance, 0 /* SETUP_FUNCTION */); }); } else { // async setup returned Promise. // bail here and wait for re-entry. instance.asyncDep = setupResult; } } else { handleSetupResult(instance, setupResult, isSSR); }
} else {
finishComponentSetup(instance, isSSR);
} } 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$1(`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$1(`setup() should return an object. Received: ${setupResult === null ? 'null' : typeof setupResult}`);
} finishComponentSetup(instance, isSSR); } let compile; let installWithProxy; /**
- 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; installWithProxy = i => {
if (i.render._rc) { i.withProxy = new Proxy(i.ctx, RuntimeCompiledPublicInstanceProxyHandlers); }
}; } // dev only const isRuntimeOnly = () => !compile; function finishComponentSetup(instance, isSSR, skipOptions) { const Component = instance.type; // template / render function normalization // could be already set when returned from setup() if (!instance.render) {
// only do on-the-fly compile if not in SSR - SSR on-the-fly compilation // is done by server-renderer if (!isSSR && compile && !Component.render) { const template = Component.template; if (template) { { startMeasure(instance, `compile`); } const { isCustomElement, compilerOptions } = instance.appContext.config; const { delimiters, compilerOptions: componentCompilerOptions } = Component; const finalCompilerOptions = extend(extend({ isCustomElement, delimiters }, compilerOptions), componentCompilerOptions); Component.render = compile(template, finalCompilerOptions); { 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 (installWithProxy) { installWithProxy(instance); }
} // support for 2.x options {
setCurrentInstance(instance); pauseTracking(); applyOptions(instance); resetTracking(); unsetCurrentInstance();
} // warn missing template/render // the runtime compilation of template in SSR is done by server-render if (!Component.render && instance.render === NOOP && !isSSR) {
/* istanbul ignore if */ if (!compile && Component.template) { warn$1(`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$1(`Component is missing template or render function.`); }
} } function createAttrsProxy(instance) { return new Proxy(instance.attrs, {
get(target, key) { markAttrsAccessed(); track(instance, "get" /* GET */, '$attrs'); return target[key]; }, set() { warn$1(`setupContext.attrs is readonly.`); return false; }, deleteProperty() { warn$1(`setupContext.attrs is readonly.`); return false; } } );
} function createSetupContext(instance) { const expose = exposed => {
if (instance.exposed) { warn$1(`expose() should be called only once per setup().`); } instance.exposed = exposed || {};
}; let attrs; {
// We use getters in dev in case libs like test-utils overwrite instance // properties (overwrites should not be done in prod) return Object.freeze({ get attrs() { return attrs || (attrs = createAttrsProxy(instance)); }, get slots() { return shallowReadonly(instance.slots); }, get emit() { return (event, ...args) => instance.emit(event, ...args); }, expose });
} } function getExposeProxy(instance) { if (instance.exposed) {
return (instance.exposeProxy || (instance.exposeProxy = new Proxy(proxyRefs(markRaw(instance.exposed)), { get(target, key) { if (key in target) { return target[key]; } else if (key in publicPropertiesMap) { return publicPropertiesMap[key](instance); } } })));
} } const classifyRE = /(?:^|[-])(\w)/g; const classify = (str) => str.replace(classifyRE, c => c.toUpperCase()).replace(/[-]/g, ‘’); function getComponentName(Component) { return isFunction(Component)
? Component.displayName || Component.name : Component.name;
} / istanbul ignore next / function formatComponentName(instance, Component, isRoot = false) { let name = getComponentName(Component); if (!name && Component.__file) {
const match = Component.__file.match(/([^/\\]+)\.\w+$/); 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; }const computed$1 = ((getterOrOptions, debugOptions) => { // @ts-ignore return computed(getterOrOptions, debugOptions, isInSSRComponentSetup); });
// dev only const warnRuntimeUsage = (method) => warn$1(
${method}() 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.
); // implementation function defineProps() { {warnRuntimeUsage(`defineProps`);
} return null; } // implementation function defineEmits() { {
warnRuntimeUsage(`defineEmits`);
} return null; } /**
- Vue
<script setup>
compiler macro for declaring a component’s exposed - instance properties when it is accessed by a parent component via template
- refs. *
<script setup>
components are closed by default - i.e. variables inside- the
<script setup>
scope is not exposed to parent unless explicitly exposed - via
defineExpose
. * - This is only usable inside
<script setup>
, is compiled away in the - output and should not be actually called at runtime.
*/
function defineExpose(exposed) {
{
} } /**warnRuntimeUsage(`defineExpose`);
- Vue
<script setup>
compiler macro for providing props default values when - using type-based
defineProps
declaration. * - Example usage:
- ```ts
- withDefaults(defineProps<{
- size?: number
- labels?: string[]
- }>(), {
- size: 3,
- labels: () => [‘default label’]
- })
- ``` *
- This is only usable inside
<script setup>
, is compiled away in the output - and should not be actually called at runtime.
*/
function withDefaults(props, defaults) {
{
} return null; } function useSlots() { return getContext().slots; } function useAttrs() { return getContext().attrs; } function getContext() { const i = getCurrentInstance(); if (!i) {warnRuntimeUsage(`withDefaults`);
} return i.setupContext || (i.setupContext = createSetupContext(i)); } /**warn$1(`useContext() called without active instance.`);
- Runtime helper for merging default declarations. Imported by compiled code
- only.
- @internal
*/
function mergeDefaults(raw, defaults) {
const props = isArray(raw)
for (const key in defaults) {? raw.reduce((normalized, p) => ((normalized[p] = {}), normalized), {}) : raw;
} return props; } /**const opt = props[key]; if (opt) { if (isArray(opt) || isFunction(opt)) { props[key] = { type: opt, default: defaults[key] }; } else { opt.default = defaults[key]; } } else if (opt === null) { props[key] = { default: defaults[key] }; } else { warn$1(`props default key "${key}" has no corresponding declaration.`); }
- Used to create a proxy for the rest element when destructuring props with
- defineProps().
- @internal
*/
function createPropsRestProxy(props, excludedKeys) {
const ret = {};
for (const key in props) {
} return ret; } /**if (!excludedKeys.includes(key)) { Object.defineProperty(ret, key, { enumerable: true, get: () => props[key] }); }
<script setup>
helper for persisting the current instance context over- async/await flows. *
@vue/compiler-sfc
converts the following: *- ```ts
- const x = await foo()
- ``` *
- into: *
- ```ts
- let temp, restore
- const x = (([temp, restore] = withAsyncContext(() => foo())),temp=await temp,restore(),temp)
- ```
@internal */ function withAsyncContext(getAwaitable) { const ctx = getCurrentInstance(); if (!ctx) {
warn$1(`withAsyncContext called without active current instance. ` + `This is likely a bug.`);
} let awaitable = getAwaitable(); unsetCurrentInstance(); if (isPromise(awaitable)) {
awaitable = awaitable.catch(e => { setCurrentInstance(ctx); throw e; });
} return [awaitable, () => setCurrentInstance(ctx)]; }
// 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$1(`useSSRContext() is not supported in the global build.`);
} };
function initCustomFormatter() { / eslint-disable no-restricted-globals / if (typeof window === ‘undefined’) {
return;
} const vueStyle = { style: ‘color:#3ba776’ }; const numberStyle = { style: ‘color:#0b1bc9’ }; const stringStyle = { style: ‘color:#b62e24’ }; const keywordStyle = { style: ‘color:#9d288c’ }; // custom formatter for Chrome // https://www.mattzeunert.com/2016/02/19/custom-chrome-devtools-object-formatters.html const formatter = {
header(obj) { // TODO also format ComponentPublicInstance & ctx.slots/attrs in setup if (!isObject(obj)) { return null; } if (obj.__isVue) { return ['div', vueStyle, `VueInstance`]; } else if (isRef(obj)) { return [ 'div', {}, ['span', vueStyle, genRefFlag(obj)], '<', formatValue(obj.value), `>` ]; } else if (isReactive(obj)) { return [ 'div', {}, ['span', vueStyle, isShallow(obj) ? 'ShallowReactive' : 'Reactive'], '<', formatValue(obj), `>${isReadonly(obj) ? ` (readonly)` : ``}` ]; } else if (isReadonly(obj)) { return [ 'div', {}, ['span', vueStyle, isShallow(obj) ? 'ShallowReadonly' : '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 (isShallow(v)) { return `ShallowRef`; } if (v.effect) { return `ComputedRef`; } return `Ref`;
} if (window.devtoolsFormatters) {
window.devtoolsFormatters.push(formatter);
} else {
window.devtoolsFormatters = [formatter];
} }
function withMemo(memo, render, cache, index) { const cached = cache[index]; if (cached && isMemoSame(cached, memo)) {
return cached;
} const ret = render(); // shallow clone ret.memo = memo.slice(); return (cache[index] = ret); } function isMemoSame(cached, memo) { const prev = cached.memo; if (prev.length != memo.length) {
return false;
} for (let i = 0; i < prev.length; i++) {
if (prev[i] !== memo[i]) { return false; }
} // make sure to let parent block track it when returning cached if (isBlockTreeEnabled > 0 && currentBlock) {
currentBlock.push(cached);
} return true; }
// Core API ————————————————————————————————— const version = “3.2.31”; /**
- SSR utils for \@vue/server-renderer. Only exposed in cjs builds.
- @internal / const ssrUtils = (null); /*
- @internal only exposed in compat builds / const resolveFilter = null; /*
@internal only exposed in compat builds. */ const compatUtils = (null);
const svgNS = ‘http://www.w3.org/2000/svg‘; const doc = (typeof document !== ‘undefined’ ? document : null); const templateContainer = doc && doc.createElement(‘template’); 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, props) => {
const el = isSVG ? doc.createElementNS(svgNS, tag) : doc.createElement(tag, is ? { is } : undefined); if (tag === 'select' && props && props.multiple != null) { el.setAttribute('multiple', props.multiple); } return el;
}, 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) {
const cloned = el.cloneNode(true); // #3072 // - in `patchDOMProp`, we store the actual value in the `el._value` property. // - normally, elements using `:value` bindings will not be hoisted, but if // the bound value is a constant, e.g. `:value="true"` - they do get // hoisted. // - in production, hoisted nodes are cloned when subsequent inserts, but // cloneNode() does not copy the custom property we attached. // - This may need to account for other custom DOM properties we attach to // elements in addition to `_value` in the future. if (`_value` in el) { cloned._value = el._value; } return cloned;
}, // 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, start, end) {
// <parent> before | first ... last | anchor </parent> const before = anchor ? anchor.previousSibling : parent.lastChild; // #5308 can only take cached path if: // - has a single root node // - nextSibling info is still available if (start && (start === end || start.nextSibling)) { // cached while (true) { parent.insertBefore(start.cloneNode(true), anchor); if (start === end || !(start = start.nextSibling)) break; } } else { // fresh insert templateContainer.innerHTML = isSVG ? `<svg>${content}</svg>` : content; const template = templateContainer.content; if (isSVG) { // remove outer svg wrapper const wrapper = template.firstChild; while (wrapper.firstChild) { template.appendChild(wrapper.firstChild); } template.removeChild(wrapper); } parent.insertBefore(template, anchor); } return [ // first before ? before.nextSibling : parent.firstChild, // last anchor ? anchor.previousSibling : parent.lastChild ];
} };
// compiler should normalize class + :class bindings on the same element // into a single binding [‘staticClass’, dynamic] function patchClass(el, value, isSVG) { // directly setting className should be faster than setAttribute in theory // if this is an element during a transition, take the temporary transition // classes into account. const transitionClasses = el._vtc; if (transitionClasses) {
value = (value ? [value, ...transitionClasses] : [...transitionClasses]).join(' ');
} if (value == null) {
el.removeAttribute('class');
} else if (isSVG) {
el.setAttribute('class', value);
} else {
el.className = value;
} }
function patchStyle(el, prev, next) { const style = el.style; const isCssString = isString(next); if (next && !isCssString) {
for (const key in next) { setStyle(style, key, next[key]); } if (prev && !isString(prev)) { for (const key in prev) { if (next[key] == null) { setStyle(style, key, ''); } } }
} else {
const currentDisplay = style.display; if (isCssString) { if (prev !== next) { style.cssText = next; } } else if (prev) { el.removeAttribute('style'); } // indicates that the `display` of the element is controlled by `v-show`, // so we always keep the current `display` value regardless of the `style` // value, thus handing over control to `v-show`. if ('_vod' in el) { style.display = currentDisplay; }
} } const importantRE = /\s*!important$/; 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, instance) { 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 && !includeBooleanAttr(value))) { 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' && // custom elements may use _value internally !el.tagName.includes('-')) { // 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 || // #4956: always set for OPTION elements because its value falls back to // textContent if no value attribute is present. And setting .value for // OPTION has no side effect el.tagName === 'OPTION') { el.value = newValue; } if (value == null) { el.removeAttribute(key); } return;
} if (value === ‘’ || value == null) {
const type = typeof el[key]; if (type === 'boolean') { // e.g. <select multiple> compiles to { multiple: '' } el[key] = includeBooleanAttr(value); 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"> // the value of some IDL attr must be greater than 0, e.g. input.size = 0 -> error try { el[key] = 0; } catch (_a) { } el.removeAttribute(key); return; }
} // some properties perform value validation and throw try {
el[key] = value;
} catch (e) {
{ warn$1(`Failed setting prop "${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; let skipTimestampCheck = false; if (typeof window !== ‘undefined’) { // 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 (_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();
} // #3485: Firefox <= 53 has incorrect Event.timeStamp implementation // and does not fire microtasks in between event propagation, so safe to exclude. const ffMatch = navigator.userAgent.match(/firefox\/(\d+)/i); skipTimestampCheck = !!(ffMatch && Number(ffMatch[1]) <= 53); } // 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 [hyphenate(name.slice(2)), 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 (skipTimestampCheck || 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 && fn(e));
} else {
return value;
} }
const nativeOnRE = /^on[a-z]/; const patchProp = (el, key, prevValue, nextValue, isSVG = false, prevChildren, parentComponent, parentSuspense, unmountChildren) => { if (key === ‘class’) {
patchClass(el, nextValue, isSVG);
} else if (key === ‘style’) {
patchStyle(el, prevValue, nextValue);
} else if (isOn(key)) {
// ignore v-model listeners if (!isModelListener(key)) { patchEvent(el, key, prevValue, nextValue, parentComponent); }
} else if (key[0] === ‘.’
? ((key = key.slice(1)), true) : key[0] === '^' ? ((key = key.slice(1)), false) : 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);
} }; function shouldSetAsProp(el, key, value, isSVG) { if (isSVG) {
// most keys must be set as attribute on svg elements to work // ...except innerHTML & textContent if (key === 'innerHTML' || key === 'textContent') { 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 thatcontentEditable
doesn’t have this problem: its DOM // property is also enumerated string values. if (key === ‘spellcheck’ || key === ‘draggable’) {return false;
} // #1787, #2840 form property on form elements is readonly and must be set as // attribute. if (key === ‘form’) {
return false;
} // #1526 must be set as attribute if (key === ‘list’ && el.tagName === ‘INPUT’) {
return false;
} // #2766