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management/front/dkha-web-sz-main/node_modules/vue/dist/vue.esm.browser.js

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2023-12-18 13:12:25 +08:00
/*!
* Vue.js v2.6.11
* (c) 2014-2019 Evan You
* Released under the MIT License.
*/
/* */
const emptyObject = Object.freeze({});
// These helpers produce better VM code in JS engines due to their
// explicitness and function inlining.
function isUndef (v) {
return v === undefined || v === null
}
function isDef (v) {
return v !== undefined && v !== null
}
function isTrue (v) {
return v === true
}
function isFalse (v) {
return v === false
}
/**
* Check if value is primitive.
*/
function isPrimitive (value) {
return (
typeof value === 'string' ||
typeof value === 'number' ||
// $flow-disable-line
typeof value === 'symbol' ||
typeof value === 'boolean'
)
}
/**
* Quick object check - this is primarily used to tell
* Objects from primitive values when we know the value
* is a JSON-compliant type.
*/
function isObject (obj) {
return obj !== null && typeof obj === 'object'
}
/**
* Get the raw type string of a value, e.g., [object Object].
*/
const _toString = Object.prototype.toString;
function toRawType (value) {
return _toString.call(value).slice(8, -1)
}
/**
* Strict object type check. Only returns true
* for plain JavaScript objects.
*/
function isPlainObject (obj) {
return _toString.call(obj) === '[object Object]'
}
function isRegExp (v) {
return _toString.call(v) === '[object RegExp]'
}
/**
* Check if val is a valid array index.
*/
function isValidArrayIndex (val) {
const n = parseFloat(String(val));
return n >= 0 && Math.floor(n) === n && isFinite(val)
}
function isPromise (val) {
return (
isDef(val) &&
typeof val.then === 'function' &&
typeof val.catch === 'function'
)
}
/**
* Convert a value to a string that is actually rendered.
*/
function toString (val) {
return val == null
? ''
: Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)
? JSON.stringify(val, null, 2)
: String(val)
}
/**
* Convert an input value to a number for persistence.
* If the conversion fails, return original string.
*/
function toNumber (val) {
const n = parseFloat(val);
return isNaN(n) ? val : n
}
/**
* Make a map and return a function for checking if a key
* is in that map.
*/
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]
}
/**
* Check if a tag is a built-in tag.
*/
const isBuiltInTag = makeMap('slot,component', true);
/**
* Check if an attribute is a reserved attribute.
*/
const isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');
/**
* Remove an item from an array.
*/
function remove (arr, item) {
if (arr.length) {
const index = arr.indexOf(item);
if (index > -1) {
return arr.splice(index, 1)
}
}
}
/**
* Check whether an object has the property.
*/
const hasOwnProperty = Object.prototype.hasOwnProperty;
function hasOwn (obj, key) {
return hasOwnProperty.call(obj, key)
}
/**
* Create a cached version of a pure function.
*/
function cached (fn) {
const cache = Object.create(null);
return (function cachedFn (str) {
const hit = cache[str];
return hit || (cache[str] = fn(str))
})
}
/**
* Camelize a hyphen-delimited string.
*/
const camelizeRE = /-(\w)/g;
const camelize = cached((str) => {
return str.replace(camelizeRE, (_, c) => c ? c.toUpperCase() : '')
});
/**
* Capitalize a string.
*/
const capitalize = cached((str) => {
return str.charAt(0).toUpperCase() + str.slice(1)
});
/**
* Hyphenate a camelCase string.
*/
const hyphenateRE = /\B([A-Z])/g;
const hyphenate = cached((str) => {
return str.replace(hyphenateRE, '-$1').toLowerCase()
});
/**
* Simple bind polyfill for environments that do not support it,
* e.g., PhantomJS 1.x. Technically, we don't need this anymore
* since native bind is now performant enough in most browsers.
* But removing it would mean breaking code that was able to run in
* PhantomJS 1.x, so this must be kept for backward compatibility.
*/
/* istanbul ignore next */
function polyfillBind (fn, ctx) {
function boundFn (a) {
const l = arguments.length;
return l
? l > 1
? fn.apply(ctx, arguments)
: fn.call(ctx, a)
: fn.call(ctx)
}
boundFn._length = fn.length;
return boundFn
}
function nativeBind (fn, ctx) {
return fn.bind(ctx)
}
const bind = Function.prototype.bind
? nativeBind
: polyfillBind;
/**
* Convert an Array-like object to a real Array.
*/
function toArray (list, start) {
start = start || 0;
let i = list.length - start;
const ret = new Array(i);
while (i--) {
ret[i] = list[i + start];
}
return ret
}
/**
* Mix properties into target object.
*/
function extend (to, _from) {
for (const key in _from) {
to[key] = _from[key];
}
return to
}
/**
* Merge an Array of Objects into a single Object.
*/
function toObject (arr) {
const res = {};
for (let i = 0; i < arr.length; i++) {
if (arr[i]) {
extend(res, arr[i]);
}
}
return res
}
/* eslint-disable no-unused-vars */
/**
* Perform no operation.
* Stubbing args to make Flow happy without leaving useless transpiled code
* with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
*/
function noop (a, b, c) {}
/**
* Always return false.
*/
const no = (a, b, c) => false;
/* eslint-enable no-unused-vars */
/**
* Return the same value.
*/
const identity = (_) => _;
/**
* Generate a string containing static keys from compiler modules.
*/
function genStaticKeys (modules) {
return modules.reduce((keys, m) => {
return keys.concat(m.staticKeys || [])
}, []).join(',')
}
/**
* Check if two values are loosely equal - that is,
* if they are plain objects, do they have the same shape?
*/
function looseEqual (a, b) {
if (a === b) return true
const isObjectA = isObject(a);
const isObjectB = isObject(b);
if (isObjectA && isObjectB) {
try {
const isArrayA = Array.isArray(a);
const isArrayB = Array.isArray(b);
if (isArrayA && isArrayB) {
return a.length === b.length && a.every((e, i) => {
return looseEqual(e, b[i])
})
} else if (a instanceof Date && b instanceof Date) {
return a.getTime() === b.getTime()
} else if (!isArrayA && !isArrayB) {
const keysA = Object.keys(a);
const keysB = Object.keys(b);
return keysA.length === keysB.length && keysA.every(key => {
return looseEqual(a[key], b[key])
})
} else {
/* istanbul ignore next */
return false
}
} catch (e) {
/* istanbul ignore next */
return false
}
} else if (!isObjectA && !isObjectB) {
return String(a) === String(b)
} else {
return false
}
}
/**
* Return the first index at which a loosely equal value can be
* found in the array (if value is a plain object, the array must
* contain an object of the same shape), or -1 if it is not present.
*/
function looseIndexOf (arr, val) {
for (let i = 0; i < arr.length; i++) {
if (looseEqual(arr[i], val)) return i
}
return -1
}
/**
* Ensure a function is called only once.
*/
function once (fn) {
let called = false;
return function () {
if (!called) {
called = true;
fn.apply(this, arguments);
}
}
}
const SSR_ATTR = 'data-server-rendered';
const ASSET_TYPES = [
'component',
'directive',
'filter'
];
const LIFECYCLE_HOOKS = [
'beforeCreate',
'created',
'beforeMount',
'mounted',
'beforeUpdate',
'updated',
'beforeDestroy',
'destroyed',
'activated',
'deactivated',
'errorCaptured',
'serverPrefetch'
];
/* */
var config = ({
/**
* Option merge strategies (used in core/util/options)
*/
// $flow-disable-line
optionMergeStrategies: Object.create(null),
/**
* Whether to suppress warnings.
*/
silent: false,
/**
* Show production mode tip message on boot?
*/
productionTip: "development" !== 'production',
/**
* Whether to enable devtools
*/
devtools: "development" !== 'production',
/**
* Whether to record perf
*/
performance: false,
/**
* Error handler for watcher errors
*/
errorHandler: null,
/**
* Warn handler for watcher warns
*/
warnHandler: null,
/**
* Ignore certain custom elements
*/
ignoredElements: [],
/**
* Custom user key aliases for v-on
*/
// $flow-disable-line
keyCodes: Object.create(null),
/**
* Check if a tag is reserved so that it cannot be registered as a
* component. This is platform-dependent and may be overwritten.
*/
isReservedTag: no,
/**
* Check if an attribute is reserved so that it cannot be used as a component
* prop. This is platform-dependent and may be overwritten.
*/
isReservedAttr: no,
/**
* Check if a tag is an unknown element.
* Platform-dependent.
*/
isUnknownElement: no,
/**
* Get the namespace of an element
*/
getTagNamespace: noop,
/**
* Parse the real tag name for the specific platform.
*/
parsePlatformTagName: identity,
/**
* Check if an attribute must be bound using property, e.g. value
* Platform-dependent.
*/
mustUseProp: no,
/**
* Perform updates asynchronously. Intended to be used by Vue Test Utils
* This will significantly reduce performance if set to false.
*/
async: true,
/**
* Exposed for legacy reasons
*/
_lifecycleHooks: LIFECYCLE_HOOKS
});
/* */
/**
* unicode letters used for parsing html tags, component names and property paths.
* using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
* skipping \u10000-\uEFFFF due to it freezing up PhantomJS
*/
const unicodeRegExp = /a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD/;
/**
* Check if a string starts with $ or _
*/
function isReserved (str) {
const c = (str + '').charCodeAt(0);
return c === 0x24 || c === 0x5F
}
/**
* Define a property.
*/
function def (obj, key, val, enumerable) {
Object.defineProperty(obj, key, {
value: val,
enumerable: !!enumerable,
writable: true,
configurable: true
});
}
/**
* Parse simple path.
*/
const bailRE = new RegExp(`[^${unicodeRegExp.source}.$_\\d]`);
function parsePath (path) {
if (bailRE.test(path)) {
return
}
const segments = path.split('.');
return function (obj) {
for (let i = 0; i < segments.length; i++) {
if (!obj) return
obj = obj[segments[i]];
}
return obj
}
}
/* */
// can we use __proto__?
const hasProto = '__proto__' in {};
// Browser environment sniffing
const inBrowser = typeof window !== 'undefined';
const inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
const weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
const UA = inBrowser && window.navigator.userAgent.toLowerCase();
const isIE = UA && /msie|trident/.test(UA);
const isIE9 = UA && UA.indexOf('msie 9.0') > 0;
const isEdge = UA && UA.indexOf('edge/') > 0;
const isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');
const isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');
const isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
const isPhantomJS = UA && /phantomjs/.test(UA);
const isFF = UA && UA.match(/firefox\/(\d+)/);
// Firefox has a "watch" function on Object.prototype...
const nativeWatch = ({}).watch;
let supportsPassive = false;
if (inBrowser) {
try {
const opts = {};
Object.defineProperty(opts, 'passive', ({
get () {
/* istanbul ignore next */
supportsPassive = true;
}
})); // https://github.com/facebook/flow/issues/285
window.addEventListener('test-passive', null, opts);
} catch (e) {}
}
// this needs to be lazy-evaled because vue may be required before
// vue-server-renderer can set VUE_ENV
let _isServer;
const isServerRendering = () => {
if (_isServer === undefined) {
/* istanbul ignore if */
if (!inBrowser && !inWeex && typeof global !== 'undefined') {
// detect presence of vue-server-renderer and avoid
// Webpack shimming the process
_isServer = global['process'] && global['process'].env.VUE_ENV === 'server';
} else {
_isServer = false;
}
}
return _isServer
};
// detect devtools
const devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;
/* istanbul ignore next */
function isNative (Ctor) {
return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
}
const hasSymbol =
typeof Symbol !== 'undefined' && isNative(Symbol) &&
typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);
let _Set;
/* istanbul ignore if */ // $flow-disable-line
if (typeof Set !== 'undefined' && isNative(Set)) {
// use native Set when available.
_Set = Set;
} else {
// a non-standard Set polyfill that only works with primitive keys.
_Set = class Set {
constructor () {
this.set = Object.create(null);
}
has (key) {
return this.set[key] === true
}
add (key) {
this.set[key] = true;
}
clear () {
this.set = Object.create(null);
}
};
}
/* */
let warn = noop;
let tip = noop;
let generateComponentTrace = (noop); // work around flow check
let formatComponentName = (noop);
{
const hasConsole = typeof console !== 'undefined';
const classifyRE = /(?:^|[-_])(\w)/g;
const classify = str => str
.replace(classifyRE, c => c.toUpperCase())
.replace(/[-_]/g, '');
warn = (msg, vm) => {
const trace = vm ? generateComponentTrace(vm) : '';
if (config.warnHandler) {
config.warnHandler.call(null, msg, vm, trace);
} else if (hasConsole && (!config.silent)) {
console.error(`[Vue warn]: ${msg}${trace}`);
}
};
tip = (msg, vm) => {
if (hasConsole && (!config.silent)) {
console.warn(`[Vue tip]: ${msg}` + (
vm ? generateComponentTrace(vm) : ''
));
}
};
formatComponentName = (vm, includeFile) => {
if (vm.$root === vm) {
return '<Root>'
}
const options = typeof vm === 'function' && vm.cid != null
? vm.options
: vm._isVue
? vm.$options || vm.constructor.options
: vm;
let name = options.name || options._componentTag;
const file = options.__file;
if (!name && file) {
const match = file.match(/([^/\\]+)\.vue$/);
name = match && match[1];
}
return (
(name ? `<${classify(name)}>` : `<Anonymous>`) +
(file && includeFile !== false ? ` at ${file}` : '')
)
};
const repeat = (str, n) => {
let res = '';
while (n) {
if (n % 2 === 1) res += str;
if (n > 1) str += str;
n >>= 1;
}
return res
};
generateComponentTrace = vm => {
if (vm._isVue && vm.$parent) {
const tree = [];
let currentRecursiveSequence = 0;
while (vm) {
if (tree.length > 0) {
const last = tree[tree.length - 1];
if (last.constructor === vm.constructor) {
currentRecursiveSequence++;
vm = vm.$parent;
continue
} else if (currentRecursiveSequence > 0) {
tree[tree.length - 1] = [last, currentRecursiveSequence];
currentRecursiveSequence = 0;
}
}
tree.push(vm);
vm = vm.$parent;
}
return '\n\nfound in\n\n' + tree
.map((vm, i) => `${
i === 0 ? '---> ' : repeat(' ', 5 + i * 2)
}${
Array.isArray(vm)
? `${formatComponentName(vm[0])}... (${vm[1]} recursive calls)`
: formatComponentName(vm)
}`)
.join('\n')
} else {
return `\n\n(found in ${formatComponentName(vm)})`
}
};
}
/* */
let uid = 0;
/**
* A dep is an observable that can have multiple
* directives subscribing to it.
*/
class Dep {
constructor () {
this.id = uid++;
this.subs = [];
}
addSub (sub) {
this.subs.push(sub);
}
removeSub (sub) {
remove(this.subs, sub);
}
depend () {
if (Dep.target) {
Dep.target.addDep(this);
}
}
notify () {
// stabilize the subscriber list first
const subs = this.subs.slice();
if (!config.async) {
// subs aren't sorted in scheduler if not running async
// we need to sort them now to make sure they fire in correct
// order
subs.sort((a, b) => a.id - b.id);
}
for (let i = 0, l = subs.length; i < l; i++) {
subs[i].update();
}
}
}
// The current target watcher being evaluated.
// This is globally unique because only one watcher
// can be evaluated at a time.
Dep.target = null;
const targetStack = [];
function pushTarget (target) {
targetStack.push(target);
Dep.target = target;
}
function popTarget () {
targetStack.pop();
Dep.target = targetStack[targetStack.length - 1];
}
/* */
class VNode {
// rendered in this component's scope
// component instance
// component placeholder node
// strictly internal
// contains raw HTML? (server only)
// hoisted static node
// necessary for enter transition check
// empty comment placeholder?
// is a cloned node?
// is a v-once node?
// async component factory function
// real context vm for functional nodes
// for SSR caching
// used to store functional render context for devtools
// functional scope id support
constructor (
tag,
data,
children,
text,
elm,
context,
componentOptions,
asyncFactory
) {
this.tag = tag;
this.data = data;
this.children = children;
this.text = text;
this.elm = elm;
this.ns = undefined;
this.context = context;
this.fnContext = undefined;
this.fnOptions = undefined;
this.fnScopeId = undefined;
this.key = data && data.key;
this.componentOptions = componentOptions;
this.componentInstance = undefined;
this.parent = undefined;
this.raw = false;
this.isStatic = false;
this.isRootInsert = true;
this.isComment = false;
this.isCloned = false;
this.isOnce = false;
this.asyncFactory = asyncFactory;
this.asyncMeta = undefined;
this.isAsyncPlaceholder = false;
}
// DEPRECATED: alias for componentInstance for backwards compat.
/* istanbul ignore next */
get child () {
return this.componentInstance
}
}
const createEmptyVNode = (text = '') => {
const node = new VNode();
node.text = text;
node.isComment = true;
return node
};
function createTextVNode (val) {
return new VNode(undefined, undefined, undefined, String(val))
}
// optimized shallow clone
// used for static nodes and slot nodes because they may be reused across
// multiple renders, cloning them avoids errors when DOM manipulations rely
// on their elm reference.
function cloneVNode (vnode) {
const cloned = new VNode(
vnode.tag,
vnode.data,
// #7975
// clone children array to avoid mutating original in case of cloning
// a child.
vnode.children && vnode.children.slice(),
vnode.text,
vnode.elm,
vnode.context,
vnode.componentOptions,
vnode.asyncFactory
);
cloned.ns = vnode.ns;
cloned.isStatic = vnode.isStatic;
cloned.key = vnode.key;
cloned.isComment = vnode.isComment;
cloned.fnContext = vnode.fnContext;
cloned.fnOptions = vnode.fnOptions;
cloned.fnScopeId = vnode.fnScopeId;
cloned.asyncMeta = vnode.asyncMeta;
cloned.isCloned = true;
return cloned
}
/*
* not type checking this file because flow doesn't play well with
* dynamically accessing methods on Array prototype
*/
const arrayProto = Array.prototype;
const arrayMethods = Object.create(arrayProto);
const methodsToPatch = [
'push',
'pop',
'shift',
'unshift',
'splice',
'sort',
'reverse'
];
/**
* Intercept mutating methods and emit events
*/
methodsToPatch.forEach(function (method) {
// cache original method
const original = arrayProto[method];
def(arrayMethods, method, function mutator (...args) {
const result = original.apply(this, args);
const ob = this.__ob__;
let inserted;
switch (method) {
case 'push':
case 'unshift':
inserted = args;
break
case 'splice':
inserted = args.slice(2);
break
}
if (inserted) ob.observeArray(inserted);
// notify change
ob.dep.notify();
return result
});
});
/* */
const arrayKeys = Object.getOwnPropertyNames(arrayMethods);
/**
* In some cases we may want to disable observation inside a component's
* update computation.
*/
let shouldObserve = true;
function toggleObserving (value) {
shouldObserve = value;
}
/**
* Observer class that is attached to each observed
* object. Once attached, the observer converts the target
* object's property keys into getter/setters that
* collect dependencies and dispatch updates.
*/
class Observer {
// number of vms that have this object as root $data
constructor (value) {
this.value = value;
this.dep = new Dep();
this.vmCount = 0;
def(value, '__ob__', this);
if (Array.isArray(value)) {
if (hasProto) {
protoAugment(value, arrayMethods);
} else {
copyAugment(value, arrayMethods, arrayKeys);
}
this.observeArray(value);
} else {
this.walk(value);
}
}
/**
* Walk through all properties and convert them into
* getter/setters. This method should only be called when
* value type is Object.
*/
walk (obj) {
const keys = Object.keys(obj);
for (let i = 0; i < keys.length; i++) {
defineReactive$$1(obj, keys[i]);
}
}
/**
* Observe a list of Array items.
*/
observeArray (items) {
for (let i = 0, l = items.length; i < l; i++) {
observe(items[i]);
}
}
}
// helpers
/**
* Augment a target Object or Array by intercepting
* the prototype chain using __proto__
*/
function protoAugment (target, src) {
/* eslint-disable no-proto */
target.__proto__ = src;
/* eslint-enable no-proto */
}
/**
* Augment a target Object or Array by defining
* hidden properties.
*/
/* istanbul ignore next */
function copyAugment (target, src, keys) {
for (let i = 0, l = keys.length; i < l; i++) {
const key = keys[i];
def(target, key, src[key]);
}
}
/**
* Attempt to create an observer instance for a value,
* returns the new observer if successfully observed,
* or the existing observer if the value already has one.
*/
function observe (value, asRootData) {
if (!isObject(value) || value instanceof VNode) {
return
}
let ob;
if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
ob = value.__ob__;
} else if (
shouldObserve &&
!isServerRendering() &&
(Array.isArray(value) || isPlainObject(value)) &&
Object.isExtensible(value) &&
!value._isVue
) {
ob = new Observer(value);
}
if (asRootData && ob) {
ob.vmCount++;
}
return ob
}
/**
* Define a reactive property on an Object.
*/
function defineReactive$$1 (
obj,
key,
val,
customSetter,
shallow
) {
const dep = new Dep();
const property = Object.getOwnPropertyDescriptor(obj, key);
if (property && property.configurable === false) {
return
}
// cater for pre-defined getter/setters
const getter = property && property.get;
const setter = property && property.set;
if ((!getter || setter) && arguments.length === 2) {
val = obj[key];
}
let childOb = !shallow && observe(val);
Object.defineProperty(obj, key, {
enumerable: true,
configurable: true,
get: function reactiveGetter () {
const value = getter ? getter.call(obj) : val;
if (Dep.target) {
dep.depend();
if (childOb) {
childOb.dep.depend();
if (Array.isArray(value)) {
dependArray(value);
}
}
}
return value
},
set: function reactiveSetter (newVal) {
const value = getter ? getter.call(obj) : val;
/* eslint-disable no-self-compare */
if (newVal === value || (newVal !== newVal && value !== value)) {
return
}
/* eslint-enable no-self-compare */
if (customSetter) {
customSetter();
}
// #7981: for accessor properties without setter
if (getter && !setter) return
if (setter) {
setter.call(obj, newVal);
} else {
val = newVal;
}
childOb = !shallow && observe(newVal);
dep.notify();
}
});
}
/**
* Set a property on an object. Adds the new property and
* triggers change notification if the property doesn't
* already exist.
*/
function set (target, key, val) {
if (isUndef(target) || isPrimitive(target)
) {
warn(`Cannot set reactive property on undefined, null, or primitive value: ${(target)}`);
}
if (Array.isArray(target) && isValidArrayIndex(key)) {
target.length = Math.max(target.length, key);
target.splice(key, 1, val);
return val
}
if (key in target && !(key in Object.prototype)) {
target[key] = val;
return val
}
const ob = (target).__ob__;
if (target._isVue || (ob && ob.vmCount)) {
warn(
'Avoid adding reactive properties to a Vue instance or its root $data ' +
'at runtime - declare it upfront in the data option.'
);
return val
}
if (!ob) {
target[key] = val;
return val
}
defineReactive$$1(ob.value, key, val);
ob.dep.notify();
return val
}
/**
* Delete a property and trigger change if necessary.
*/
function del (target, key) {
if (isUndef(target) || isPrimitive(target)
) {
warn(`Cannot delete reactive property on undefined, null, or primitive value: ${(target)}`);
}
if (Array.isArray(target) && isValidArrayIndex(key)) {
target.splice(key, 1);
return
}
const ob = (target).__ob__;
if (target._isVue || (ob && ob.vmCount)) {
warn(
'Avoid deleting properties on a Vue instance or its root $data ' +
'- just set it to null.'
);
return
}
if (!hasOwn(target, key)) {
return
}
delete target[key];
if (!ob) {
return
}
ob.dep.notify();
}
/**
* Collect dependencies on array elements when the array is touched, since
* we cannot intercept array element access like property getters.
*/
function dependArray (value) {
for (let e, i = 0, l = value.length; i < l; i++) {
e = value[i];
e && e.__ob__ && e.__ob__.dep.depend();
if (Array.isArray(e)) {
dependArray(e);
}
}
}
/* */
/**
* Option overwriting strategies are functions that handle
* how to merge a parent option value and a child option
* value into the final value.
*/
const strats = config.optionMergeStrategies;
/**
* Options with restrictions
*/
{
strats.el = strats.propsData = function (parent, child, vm, key) {
if (!vm) {
warn(
`option "${key}" can only be used during instance ` +
'creation with the `new` keyword.'
);
}
return defaultStrat(parent, child)
};
}
/**
* Helper that recursively merges two data objects together.
*/
function mergeData (to, from) {
if (!from) return to
let key, toVal, fromVal;
const keys = hasSymbol
? Reflect.ownKeys(from)
: Object.keys(from);
for (let i = 0; i < keys.length; i++) {
key = keys[i];
// in case the object is already observed...
if (key === '__ob__') continue
toVal = to[key];
fromVal = from[key];
if (!hasOwn(to, key)) {
set(to, key, fromVal);
} else if (
toVal !== fromVal &&
isPlainObject(toVal) &&
isPlainObject(fromVal)
) {
mergeData(toVal, fromVal);
}
}
return to
}
/**
* Data
*/
function mergeDataOrFn (
parentVal,
childVal,
vm
) {
if (!vm) {
// in a Vue.extend merge, both should be functions
if (!childVal) {
return parentVal
}
if (!parentVal) {
return childVal
}
// when parentVal & childVal are both present,
// we need to return a function that returns the
// merged result of both functions... no need to
// check if parentVal is a function here because
// it has to be a function to pass previous merges.
return function mergedDataFn () {
return mergeData(
typeof childVal === 'function' ? childVal.call(this, this) : childVal,
typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal
)
}
} else {
return function mergedInstanceDataFn () {
// instance merge
const instanceData = typeof childVal === 'function'
? childVal.call(vm, vm)
: childVal;
const defaultData = typeof parentVal === 'function'
? parentVal.call(vm, vm)
: parentVal;
if (instanceData) {
return mergeData(instanceData, defaultData)
} else {
return defaultData
}
}
}
}
strats.data = function (
parentVal,
childVal,
vm
) {
if (!vm) {
if (childVal && typeof childVal !== 'function') {
warn(
'The "data" option should be a function ' +
'that returns a per-instance value in component ' +
'definitions.',
vm
);
return parentVal
}
return mergeDataOrFn(parentVal, childVal)
}
return mergeDataOrFn(parentVal, childVal, vm)
};
/**
* Hooks and props are merged as arrays.
*/
function mergeHook (
parentVal,
childVal
) {
const res = childVal
? parentVal
? parentVal.concat(childVal)
: Array.isArray(childVal)
? childVal
: [childVal]
: parentVal;
return res
? dedupeHooks(res)
: res
}
function dedupeHooks (hooks) {
const res = [];
for (let i = 0; i < hooks.length; i++) {
if (res.indexOf(hooks[i]) === -1) {
res.push(hooks[i]);
}
}
return res
}
LIFECYCLE_HOOKS.forEach(hook => {
strats[hook] = mergeHook;
});
/**
* Assets
*
* When a vm is present (instance creation), we need to do
* a three-way merge between constructor options, instance
* options and parent options.
*/
function mergeAssets (
parentVal,
childVal,
vm,
key
) {
const res = Object.create(parentVal || null);
if (childVal) {
assertObjectType(key, childVal, vm);
return extend(res, childVal)
} else {
return res
}
}
ASSET_TYPES.forEach(function (type) {
strats[type + 's'] = mergeAssets;
});
/**
* Watchers.
*
* Watchers hashes should not overwrite one
* another, so we merge them as arrays.
*/
strats.watch = function (
parentVal,
childVal,
vm,
key
) {
// work around Firefox's Object.prototype.watch...
if (parentVal === nativeWatch) parentVal = undefined;
if (childVal === nativeWatch) childVal = undefined;
/* istanbul ignore if */
if (!childVal) return Object.create(parentVal || null)
{
assertObjectType(key, childVal, vm);
}
if (!parentVal) return childVal
const ret = {};
extend(ret, parentVal);
for (const key in childVal) {
let parent = ret[key];
const child = childVal[key];
if (parent && !Array.isArray(parent)) {
parent = [parent];
}
ret[key] = parent
? parent.concat(child)
: Array.isArray(child) ? child : [child];
}
return ret
};
/**
* Other object hashes.
*/
strats.props =
strats.methods =
strats.inject =
strats.computed = function (
parentVal,
childVal,
vm,
key
) {
if (childVal && "development" !== 'production') {
assertObjectType(key, childVal, vm);
}
if (!parentVal) return childVal
const ret = Object.create(null);
extend(ret, parentVal);
if (childVal) extend(ret, childVal);
return ret
};
strats.provide = mergeDataOrFn;
/**
* Default strategy.
*/
const defaultStrat = function (parentVal, childVal) {
return childVal === undefined
? parentVal
: childVal
};
/**
* Validate component names
*/
function checkComponents (options) {
for (const key in options.components) {
validateComponentName(key);
}
}
function validateComponentName (name) {
if (!new RegExp(`^[a-zA-Z][\\-\\.0-9_${unicodeRegExp.source}]*$`).test(name)) {
warn(
'Invalid component name: "' + name + '". Component names ' +
'should conform to valid custom element name in html5 specification.'
);
}
if (isBuiltInTag(name) || config.isReservedTag(name)) {
warn(
'Do not use built-in or reserved HTML elements as component ' +
'id: ' + name
);
}
}
/**
* Ensure all props option syntax are normalized into the
* Object-based format.
*/
function normalizeProps (options, vm) {
const props = options.props;
if (!props) return
const res = {};
let i, val, name;
if (Array.isArray(props)) {
i = props.length;
while (i--) {
val = props[i];
if (typeof val === 'string') {
name = camelize(val);
res[name] = { type: null };
} else {
warn('props must be strings when using array syntax.');
}
}
} else if (isPlainObject(props)) {
for (const key in props) {
val = props[key];
name = camelize(key);
res[name] = isPlainObject(val)
? val
: { type: val };
}
} else {
warn(
`Invalid value for option "props": expected an Array or an Object, ` +
`but got ${toRawType(props)}.`,
vm
);
}
options.props = res;
}
/**
* Normalize all injections into Object-based format
*/
function normalizeInject (options, vm) {
const inject = options.inject;
if (!inject) return
const normalized = options.inject = {};
if (Array.isArray(inject)) {
for (let i = 0; i < inject.length; i++) {
normalized[inject[i]] = { from: inject[i] };
}
} else if (isPlainObject(inject)) {
for (const key in inject) {
const val = inject[key];
normalized[key] = isPlainObject(val)
? extend({ from: key }, val)
: { from: val };
}
} else {
warn(
`Invalid value for option "inject": expected an Array or an Object, ` +
`but got ${toRawType(inject)}.`,
vm
);
}
}
/**
* Normalize raw function directives into object format.
*/
function normalizeDirectives (options) {
const dirs = options.directives;
if (dirs) {
for (const key in dirs) {
const def$$1 = dirs[key];
if (typeof def$$1 === 'function') {
dirs[key] = { bind: def$$1, update: def$$1 };
}
}
}
}
function assertObjectType (name, value, vm) {
if (!isPlainObject(value)) {
warn(
`Invalid value for option "${name}": expected an Object, ` +
`but got ${toRawType(value)}.`,
vm
);
}
}
/**
* Merge two option objects into a new one.
* Core utility used in both instantiation and inheritance.
*/
function mergeOptions (
parent,
child,
vm
) {
{
checkComponents(child);
}
if (typeof child === 'function') {
child = child.options;
}
normalizeProps(child, vm);
normalizeInject(child, vm);
normalizeDirectives(child);
// Apply extends and mixins on the child options,
// but only if it is a raw options object that isn't
// the result of another mergeOptions call.
// Only merged options has the _base property.
if (!child._base) {
if (child.extends) {
parent = mergeOptions(parent, child.extends, vm);
}
if (child.mixins) {
for (let i = 0, l = child.mixins.length; i < l; i++) {
parent = mergeOptions(parent, child.mixins[i], vm);
}
}
}
const options = {};
let key;
for (key in parent) {
mergeField(key);
}
for (key in child) {
if (!hasOwn(parent, key)) {
mergeField(key);
}
}
function mergeField (key) {
const strat = strats[key] || defaultStrat;
options[key] = strat(parent[key], child[key], vm, key);
}
return options
}
/**
* Resolve an asset.
* This function is used because child instances need access
* to assets defined in its ancestor chain.
*/
function resolveAsset (
options,
type,
id,
warnMissing
) {
/* istanbul ignore if */
if (typeof id !== 'string') {
return
}
const assets = options[type];
// check local registration variations first
if (hasOwn(assets, id)) return assets[id]
const camelizedId = camelize(id);
if (hasOwn(assets, camelizedId)) return assets[camelizedId]
const PascalCaseId = capitalize(camelizedId);
if (hasOwn(assets, PascalCaseId)) return assets[PascalCaseId]
// fallback to prototype chain
const res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
if (warnMissing && !res) {
warn(
'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
options
);
}
return res
}
/* */
function validateProp (
key,
propOptions,
propsData,
vm
) {
const prop = propOptions[key];
const absent = !hasOwn(propsData, key);
let value = propsData[key];
// boolean casting
const booleanIndex = getTypeIndex(Boolean, prop.type);
if (booleanIndex > -1) {
if (absent && !hasOwn(prop, 'default')) {
value = false;
} else if (value === '' || value === hyphenate(key)) {
// only cast empty string / same name to boolean if
// boolean has higher priority
const stringIndex = getTypeIndex(String, prop.type);
if (stringIndex < 0 || booleanIndex < stringIndex) {
value = true;
}
}
}
// check default value
if (value === undefined) {
value = getPropDefaultValue(vm, prop, key);
// since the default value is a fresh copy,
// make sure to observe it.
const prevShouldObserve = shouldObserve;
toggleObserving(true);
observe(value);
toggleObserving(prevShouldObserve);
}
{
assertProp(prop, key, value, vm, absent);
}
return value
}
/**
* Get the default value of a prop.
*/
function getPropDefaultValue (vm, prop, key) {
// no default, return undefined
if (!hasOwn(prop, 'default')) {
return undefined
}
const def = prop.default;
// warn against non-factory defaults for Object & Array
if (isObject(def)) {
warn(
'Invalid default value for prop "' + key + '": ' +
'Props with type Object/Array must use a factory function ' +
'to return the default value.',
vm
);
}
// the raw prop value was also undefined from previous render,
// return previous default value to avoid unnecessary watcher trigger
if (vm && vm.$options.propsData &&
vm.$options.propsData[key] === undefined &&
vm._props[key] !== undefined
) {
return vm._props[key]
}
// call factory function for non-Function types
// a value is Function if its prototype is function even across different execution context
return typeof def === 'function' && getType(prop.type) !== 'Function'
? def.call(vm)
: def
}
/**
* Assert whether a prop is valid.
*/
function assertProp (
prop,
name,
value,
vm,
absent
) {
if (prop.required && absent) {
warn(
'Missing required prop: "' + name + '"',
vm
);
return
}
if (value == null && !prop.required) {
return
}
let type = prop.type;
let valid = !type || type === true;
const expectedTypes = [];
if (type) {
if (!Array.isArray(type)) {
type = [type];
}
for (let i = 0; i < type.length && !valid; i++) {
const assertedType = assertType(value, type[i]);
expectedTypes.push(assertedType.expectedType || '');
valid = assertedType.valid;
}
}
if (!valid) {
warn(
getInvalidTypeMessage(name, value, expectedTypes),
vm
);
return
}
const validator = prop.validator;
if (validator) {
if (!validator(value)) {
warn(
'Invalid prop: custom validator check failed for prop "' + name + '".',
vm
);
}
}
}
const simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;
function assertType (value, type) {
let valid;
const expectedType = getType(type);
if (simpleCheckRE.test(expectedType)) {
const t = typeof value;
valid = t === expectedType.toLowerCase();
// for primitive wrapper objects
if (!valid && t === 'object') {
valid = value instanceof type;
}
} else if (expectedType === 'Object') {
valid = isPlainObject(value);
} else if (expectedType === 'Array') {
valid = Array.isArray(value);
} else {
valid = value instanceof type;
}
return {
valid,
expectedType
}
}
/**
* Use function string name to check built-in types,
* because a simple equality check will fail when running
* across different vms / iframes.
*/
function getType (fn) {
const match = fn && fn.toString().match(/^\s*function (\w+)/);
return match ? match[1] : ''
}
function isSameType (a, b) {
return getType(a) === getType(b)
}
function getTypeIndex (type, expectedTypes) {
if (!Array.isArray(expectedTypes)) {
return isSameType(expectedTypes, type) ? 0 : -1
}
for (let i = 0, len = expectedTypes.length; i < len; i++) {
if (isSameType(expectedTypes[i], type)) {
return i
}
}
return -1
}
function getInvalidTypeMessage (name, value, expectedTypes) {
let message = `Invalid prop: type check failed for prop "${name}".` +
` Expected ${expectedTypes.map(capitalize).join(', ')}`;
const expectedType = expectedTypes[0];
const receivedType = toRawType(value);
const expectedValue = styleValue(value, expectedType);
const receivedValue = styleValue(value, receivedType);
// check if we need to specify expected value
if (expectedTypes.length === 1 &&
isExplicable(expectedType) &&
!isBoolean(expectedType, receivedType)) {
message += ` with value ${expectedValue}`;
}
message += `, got ${receivedType} `;
// check if we need to specify received value
if (isExplicable(receivedType)) {
message += `with value ${receivedValue}.`;
}
return message
}
function styleValue (value, type) {
if (type === 'String') {
return `"${value}"`
} else if (type === 'Number') {
return `${Number(value)}`
} else {
return `${value}`
}
}
function isExplicable (value) {
const explicitTypes = ['string', 'number', 'boolean'];
return explicitTypes.some(elem => value.toLowerCase() === elem)
}
function isBoolean (...args) {
return args.some(elem => elem.toLowerCase() === 'boolean')
}
/* */
function handleError (err, vm, info) {
// Deactivate deps tracking while processing error handler to avoid possible infinite rendering.
// See: https://github.com/vuejs/vuex/issues/1505
pushTarget();
try {
if (vm) {
let cur = vm;
while ((cur = cur.$parent)) {
const hooks = cur.$options.errorCaptured;
if (hooks) {
for (let i = 0; i < hooks.length; i++) {
try {
const capture = hooks[i].call(cur, err, vm, info) === false;
if (capture) return
} catch (e) {
globalHandleError(e, cur, 'errorCaptured hook');
}
}
}
}
}
globalHandleError(err, vm, info);
} finally {
popTarget();
}
}
function invokeWithErrorHandling (
handler,
context,
args,
vm,
info
) {
let res;
try {
res = args ? handler.apply(context, args) : handler.call(context);
if (res && !res._isVue && isPromise(res) && !res._handled) {
res.catch(e => handleError(e, vm, info + ` (Promise/async)`));
// issue #9511
// avoid catch triggering multiple times when nested calls
res._handled = true;
}
} catch (e) {
handleError(e, vm, info);
}
return res
}
function globalHandleError (err, vm, info) {
if (config.errorHandler) {
try {
return config.errorHandler.call(null, err, vm, info)
} catch (e) {
// if the user intentionally throws the original error in the handler,
// do not log it twice
if (e !== err) {
logError(e, null, 'config.errorHandler');
}
}
}
logError(err, vm, info);
}
function logError (err, vm, info) {
{
warn(`Error in ${info}: "${err.toString()}"`, vm);
}
/* istanbul ignore else */
if ((inBrowser || inWeex) && typeof console !== 'undefined') {
console.error(err);
} else {
throw err
}
}
/* */
let isUsingMicroTask = false;
const callbacks = [];
let pending = false;
function flushCallbacks () {
pending = false;
const copies = callbacks.slice(0);
callbacks.length = 0;
for (let i = 0; i < copies.length; i++) {
copies[i]();
}
}
// Here we have async deferring wrappers using microtasks.
// In 2.5 we used (macro) tasks (in combination with microtasks).
// However, it has subtle problems when state is changed right before repaint
// (e.g. #6813, out-in transitions).
// Also, using (macro) tasks in event handler would cause some weird behaviors
// that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).
// So we now use microtasks everywhere, again.
// A major drawback of this tradeoff is that there are some scenarios
// where microtasks have too high a priority and fire in between supposedly
// sequential events (e.g. #4521, #6690, which have workarounds)
// or even between bubbling of the same event (#6566).
let timerFunc;
// The nextTick behavior leverages the microtask queue, which can be accessed
// via either native Promise.then or MutationObserver.
// MutationObserver has wider support, however it is seriously bugged in
// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
// completely stops working after triggering a few times... so, if native
// Promise is available, we will use it:
/* istanbul ignore next, $flow-disable-line */
if (typeof Promise !== 'undefined' && isNative(Promise)) {
const p = Promise.resolve();
timerFunc = () => {
p.then(flushCallbacks);
// In problematic UIWebViews, Promise.then doesn't completely break, but
// it can get stuck in a weird state where callbacks are pushed into the
// microtask queue but the queue isn't being flushed, until the browser
// needs to do some other work, e.g. handle a timer. Therefore we can
// "force" the microtask queue to be flushed by adding an empty timer.
if (isIOS) setTimeout(noop);
};
isUsingMicroTask = true;
} else if (!isIE && typeof MutationObserver !== 'undefined' && (
isNative(MutationObserver) ||
// PhantomJS and iOS 7.x
MutationObserver.toString() === '[object MutationObserverConstructor]'
)) {
// Use MutationObserver where native Promise is not available,
// e.g. PhantomJS, iOS7, Android 4.4
// (#6466 MutationObserver is unreliable in IE11)
let counter = 1;
const observer = new MutationObserver(flushCallbacks);
const textNode = document.createTextNode(String(counter));
observer.observe(textNode, {
characterData: true
});
timerFunc = () => {
counter = (counter + 1) % 2;
textNode.data = String(counter);
};
isUsingMicroTask = true;
} else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
// Fallback to setImmediate.
// Technically it leverages the (macro) task queue,
// but it is still a better choice than setTimeout.
timerFunc = () => {
setImmediate(flushCallbacks);
};
} else {
// Fallback to setTimeout.
timerFunc = () => {
setTimeout(flushCallbacks, 0);
};
}
function nextTick (cb, ctx) {
let _resolve;
callbacks.push(() => {
if (cb) {
try {
cb.call(ctx);
} catch (e) {
handleError(e, ctx, 'nextTick');
}
} else if (_resolve) {
_resolve(ctx);
}
});
if (!pending) {
pending = true;
timerFunc();
}
// $flow-disable-line
if (!cb && typeof Promise !== 'undefined') {
return new Promise(resolve => {
_resolve = resolve;
})
}
}
/* */
let mark;
let measure;
{
const perf = inBrowser && window.performance;
/* istanbul ignore if */
if (
perf &&
perf.mark &&
perf.measure &&
perf.clearMarks &&
perf.clearMeasures
) {
mark = tag => perf.mark(tag);
measure = (name, startTag, endTag) => {
perf.measure(name, startTag, endTag);
perf.clearMarks(startTag);
perf.clearMarks(endTag);
// perf.clearMeasures(name)
};
}
}
/* not type checking this file because flow doesn't play well with Proxy */
let initProxy;
{
const allowedGlobals = makeMap(
'Infinity,undefined,NaN,isFinite,isNaN,' +
'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
'require' // for Webpack/Browserify
);
const warnNonPresent = (target, key) => {
warn(
`Property or method "${key}" is not defined on the instance but ` +
'referenced during render. Make sure that this property is reactive, ' +
'either in the data option, or for class-based components, by ' +
'initializing the property. ' +
'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',
target
);
};
const warnReservedPrefix = (target, key) => {
warn(
`Property "${key}" must be accessed with "$data.${key}" because ` +
'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
'prevent conflicts with Vue internals. ' +
'See: https://vuejs.org/v2/api/#data',
target
);
};
const hasProxy =
typeof Proxy !== 'undefined' && isNative(Proxy);
if (hasProxy) {
const isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
config.keyCodes = new Proxy(config.keyCodes, {
set (target, key, value) {
if (isBuiltInModifier(key)) {
warn(`Avoid overwriting built-in modifier in config.keyCodes: .${key}`);
return false
} else {
target[key] = value;
return true
}
}
});
}
const hasHandler = {
has (target, key) {
const has = key in target;
const isAllowed = allowedGlobals(key) ||
(typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));
if (!has && !isAllowed) {
if (key in target.$data) warnReservedPrefix(target, key);
else warnNonPresent(target, key);
}
return has || !isAllowed
}
};
const getHandler = {
get (target, key) {
if (typeof key === 'string' && !(key in target)) {
if (key in target.$data) warnReservedPrefix(target, key);
else warnNonPresent(target, key);
}
return target[key]
}
};
initProxy = function initProxy (vm) {
if (hasProxy) {
// determine which proxy handler to use
const options = vm.$options;
const handlers = options.render && options.render._withStripped
? getHandler
: hasHandler;
vm._renderProxy = new Proxy(vm, handlers);
} else {
vm._renderProxy = vm;
}
};
}
/* */
const seenObjects = new _Set();
/**
* Recursively traverse an object to evoke all converted
* getters, so that every nested property inside the object
* is collected as a "deep" dependency.
*/
function traverse (val) {
_traverse(val, seenObjects);
seenObjects.clear();
}
function _traverse (val, seen) {
let i, keys;
const isA = Array.isArray(val);
if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
return
}
if (val.__ob__) {
const depId = val.__ob__.dep.id;
if (seen.has(depId)) {
return
}
seen.add(depId);
}
if (isA) {
i = val.length;
while (i--) _traverse(val[i], seen);
} else {
keys = Object.keys(val);
i = keys.length;
while (i--) _traverse(val[keys[i]], seen);
}
}
/* */
const normalizeEvent = cached((name) => {
const passive = name.charAt(0) === '&';
name = passive ? name.slice(1) : name;
const once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
name = once$$1 ? name.slice(1) : name;
const capture = name.charAt(0) === '!';
name = capture ? name.slice(1) : name;
return {
name,
once: once$$1,
capture,
passive
}
});
function createFnInvoker (fns, vm) {
function invoker () {
const fns = invoker.fns;
if (Array.isArray(fns)) {
const cloned = fns.slice();
for (let i = 0; i < cloned.length; i++) {
invokeWithErrorHandling(cloned[i], null, arguments, vm, `v-on handler`);
}
} else {
// return handler return value for single handlers
return invokeWithErrorHandling(fns, null, arguments, vm, `v-on handler`)
}
}
invoker.fns = fns;
return invoker
}
function updateListeners (
on,
oldOn,
add,
remove$$1,
createOnceHandler,
vm
) {
let name, def$$1, cur, old, event;
for (name in on) {
def$$1 = cur = on[name];
old = oldOn[name];
event = normalizeEvent(name);
if (isUndef(cur)) {
warn(
`Invalid handler for event "${event.name}": got ` + String(cur),
vm
);
} else if (isUndef(old)) {
if (isUndef(cur.fns)) {
cur = on[name] = createFnInvoker(cur, vm);
}
if (isTrue(event.once)) {
cur = on[name] = createOnceHandler(event.name, cur, event.capture);
}
add(event.name, cur, event.capture, event.passive, event.params);
} else if (cur !== old) {
old.fns = cur;
on[name] = old;
}
}
for (name in oldOn) {
if (isUndef(on[name])) {
event = normalizeEvent(name);
remove$$1(event.name, oldOn[name], event.capture);
}
}
}
/* */
function mergeVNodeHook (def, hookKey, hook) {
if (def instanceof VNode) {
def = def.data.hook || (def.data.hook = {});
}
let invoker;
const oldHook = def[hookKey];
function wrappedHook () {
hook.apply(this, arguments);
// important: remove merged hook to ensure it's called only once
// and prevent memory leak
remove(invoker.fns, wrappedHook);
}
if (isUndef(oldHook)) {
// no existing hook
invoker = createFnInvoker([wrappedHook]);
} else {
/* istanbul ignore if */
if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
// already a merged invoker
invoker = oldHook;
invoker.fns.push(wrappedHook);
} else {
// existing plain hook
invoker = createFnInvoker([oldHook, wrappedHook]);
}
}
invoker.merged = true;
def[hookKey] = invoker;
}
/* */
function extractPropsFromVNodeData (
data,
Ctor,
tag
) {
// we are only extracting raw values here.
// validation and default values are handled in the child
// component itself.
const propOptions = Ctor.options.props;
if (isUndef(propOptions)) {
return
}
const res = {};
const { attrs, props } = data;
if (isDef(attrs) || isDef(props)) {
for (const key in propOptions) {
const altKey = hyphenate(key);
{
const keyInLowerCase = key.toLowerCase();
if (
key !== keyInLowerCase &&
attrs && hasOwn(attrs, keyInLowerCase)
) {
tip(
`Prop "${keyInLowerCase}" is passed to component ` +
`${formatComponentName(tag || Ctor)}, but the declared prop name is` +
` "${key}". ` +
`Note that HTML attributes are case-insensitive and camelCased ` +
`props need to use their kebab-case equivalents when using in-DOM ` +
`templates. You should probably use "${altKey}" instead of "${key}".`
);
}
}
checkProp(res, props, key, altKey, true) ||
checkProp(res, attrs, key, altKey, false);
}
}
return res
}
function checkProp (
res,
hash,
key,
altKey,
preserve
) {
if (isDef(hash)) {
if (hasOwn(hash, key)) {
res[key] = hash[key];
if (!preserve) {
delete hash[key];
}
return true
} else if (hasOwn(hash, altKey)) {
res[key] = hash[altKey];
if (!preserve) {
delete hash[altKey];
}
return true
}
}
return false
}
/* */
// The template compiler attempts to minimize the need for normalization by
// statically analyzing the template at compile time.
//
// For plain HTML markup, normalization can be completely skipped because the
// generated render function is guaranteed to return Array<VNode>. There are
// two cases where extra normalization is needed:
// 1. When the children contains components - because a functional component
// may return an Array instead of a single root. In this case, just a simple
// normalization is needed - if any child is an Array, we flatten the whole
// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
// because functional components already normalize their own children.
function simpleNormalizeChildren (children) {
for (let i = 0; i < children.length; i++) {
if (Array.isArray(children[i])) {
return Array.prototype.concat.apply([], children)
}
}
return children
}
// 2. When the children contains constructs that always generated nested Arrays,
// e.g. <template>, <slot>, v-for, or when the children is provided by user
// with hand-written render functions / JSX. In such cases a full normalization
// is needed to cater to all possible types of children values.
function normalizeChildren (children) {
return isPrimitive(children)
? [createTextVNode(children)]
: Array.isArray(children)
? normalizeArrayChildren(children)
: undefined
}
function isTextNode (node) {
return isDef(node) && isDef(node.text) && isFalse(node.isComment)
}
function normalizeArrayChildren (children, nestedIndex) {
const res = [];
let i, c, lastIndex, last;
for (i = 0; i < children.length; i++) {
c = children[i];
if (isUndef(c) || typeof c === 'boolean') continue
lastIndex = res.length - 1;
last = res[lastIndex];
// nested
if (Array.isArray(c)) {
if (c.length > 0) {
c = normalizeArrayChildren(c, `${nestedIndex || ''}_${i}`);
// merge adjacent text nodes
if (isTextNode(c[0]) && isTextNode(last)) {
res[lastIndex] = createTextVNode(last.text + (c[0]).text);
c.shift();
}
res.push.apply(res, c);
}
} else if (isPrimitive(c)) {
if (isTextNode(last)) {
// merge adjacent text nodes
// this is necessary for SSR hydration because text nodes are
// essentially merged when rendered to HTML strings
res[lastIndex] = createTextVNode(last.text + c);
} else if (c !== '') {
// convert primitive to vnode
res.push(createTextVNode(c));
}
} else {
if (isTextNode(c) && isTextNode(last)) {
// merge adjacent text nodes
res[lastIndex] = createTextVNode(last.text + c.text);
} else {
// default key for nested array children (likely generated by v-for)
if (isTrue(children._isVList) &&
isDef(c.tag) &&
isUndef(c.key) &&
isDef(nestedIndex)) {
c.key = `__vlist${nestedIndex}_${i}__`;
}
res.push(c);
}
}
}
return res
}
/* */
function initProvide (vm) {
const provide = vm.$options.provide;
if (provide) {
vm._provided = typeof provide === 'function'
? provide.call(vm)
: provide;
}
}
function initInjections (vm) {
const result = resolveInject(vm.$options.inject, vm);
if (result) {
toggleObserving(false);
Object.keys(result).forEach(key => {
/* istanbul ignore else */
{
defineReactive$$1(vm, key, result[key], () => {
warn(
`Avoid mutating an injected value directly since the changes will be ` +
`overwritten whenever the provided component re-renders. ` +
`injection being mutated: "${key}"`,
vm
);
});
}
});
toggleObserving(true);
}
}
function resolveInject (inject, vm) {
if (inject) {
// inject is :any because flow is not smart enough to figure out cached
const result = Object.create(null);
const keys = hasSymbol
? Reflect.ownKeys(inject)
: Object.keys(inject);
for (let i = 0; i < keys.length; i++) {
const key = keys[i];
// #6574 in case the inject object is observed...
if (key === '__ob__') continue
const provideKey = inject[key].from;
let source = vm;
while (source) {
if (source._provided && hasOwn(source._provided, provideKey)) {
result[key] = source._provided[provideKey];
break
}
source = source.$parent;
}
if (!source) {
if ('default' in inject[key]) {
const provideDefault = inject[key].default;
result[key] = typeof provideDefault === 'function'
? provideDefault.call(vm)
: provideDefault;
} else {
warn(`Injection "${key}" not found`, vm);
}
}
}
return result
}
}
/* */
/**
* Runtime helper for resolving raw children VNodes into a slot object.
*/
function resolveSlots (
children,
context
) {
if (!children || !children.length) {
return {}
}
const slots = {};
for (let i = 0, l = children.length; i < l; i++) {
const child = children[i];
const data = child.data;
// remove slot attribute if the node is resolved as a Vue slot node
if (data && data.attrs && data.attrs.slot) {
delete data.attrs.slot;
}
// named slots should only be respected if the vnode was rendered in the
// same context.
if ((child.context === context || child.fnContext === context) &&
data && data.slot != null
) {
const name = data.slot;
const slot = (slots[name] || (slots[name] = []));
if (child.tag === 'template') {
slot.push.apply(slot, child.children || []);
} else {
slot.push(child);
}
} else {
(slots.default || (slots.default = [])).push(child);
}
}
// ignore slots that contains only whitespace
for (const name in slots) {
if (slots[name].every(isWhitespace)) {
delete slots[name];
}
}
return slots
}
function isWhitespace (node) {
return (node.isComment && !node.asyncFactory) || node.text === ' '
}
/* */
function normalizeScopedSlots (
slots,
normalSlots,
prevSlots
) {
let res;
const hasNormalSlots = Object.keys(normalSlots).length > 0;
const isStable = slots ? !!slots.$stable : !hasNormalSlots;
const key = slots && slots.$key;
if (!slots) {
res = {};
} else if (slots._normalized) {
// fast path 1: child component re-render only, parent did not change
return slots._normalized
} else if (
isStable &&
prevSlots &&
prevSlots !== emptyObject &&
key === prevSlots.$key &&
!hasNormalSlots &&
!prevSlots.$hasNormal
) {
// fast path 2: stable scoped slots w/ no normal slots to proxy,
// only need to normalize once
return prevSlots
} else {
res = {};
for (const key in slots) {
if (slots[key] && key[0] !== '$') {
res[key] = normalizeScopedSlot(normalSlots, key, slots[key]);
}
}
}
// expose normal slots on scopedSlots
for (const key in normalSlots) {
if (!(key in res)) {
res[key] = proxyNormalSlot(normalSlots, key);
}
}
// avoriaz seems to mock a non-extensible $scopedSlots object
// and when that is passed down this would cause an error
if (slots && Object.isExtensible(slots)) {
(slots)._normalized = res;
}
def(res, '$stable', isStable);
def(res, '$key', key);
def(res, '$hasNormal', hasNormalSlots);
return res
}
function normalizeScopedSlot(normalSlots, key, fn) {
const normalized = function () {
let res = arguments.length ? fn.apply(null, arguments) : fn({});
res = res && typeof res === 'object' && !Array.isArray(res)
? [res] // single vnode
: normalizeChildren(res);
return res && (
res.length === 0 ||
(res.length === 1 && res[0].isComment) // #9658
) ? undefined
: res
};
// this is a slot using the new v-slot syntax without scope. although it is
// compiled as a scoped slot, render fn users would expect it to be present
// on this.$slots because the usage is semantically a normal slot.
if (fn.proxy) {
Object.defineProperty(normalSlots, key, {
get: normalized,
enumerable: true,
configurable: true
});
}
return normalized
}
function proxyNormalSlot(slots, key) {
return () => slots[key]
}
/* */
/**
* Runtime helper for rendering v-for lists.
*/
function renderList (
val,
render
) {
let ret, i, l, keys, key;
if (Array.isArray(val) || typeof val === 'string') {
ret = new Array(val.length);
for (i = 0, l = val.length; i < l; i++) {
ret[i] = render(val[i], i);
}
} else if (typeof val === 'number') {
ret = new Array(val);
for (i = 0; i < val; i++) {
ret[i] = render(i + 1, i);
}
} else if (isObject(val)) {
if (hasSymbol && val[Symbol.iterator]) {
ret = [];
const iterator = val[Symbol.iterator]();
let result = iterator.next();
while (!result.done) {
ret.push(render(result.value, ret.length));
result = iterator.next();
}
} else {
keys = Object.keys(val);
ret = new Array(keys.length);
for (i = 0, l = keys.length; i < l; i++) {
key = keys[i];
ret[i] = render(val[key], key, i);
}
}
}
if (!isDef(ret)) {
ret = [];
}
(ret)._isVList = true;
return ret
}
/* */
/**
* Runtime helper for rendering <slot>
*/
function renderSlot (
name,
fallback,
props,
bindObject
) {
const scopedSlotFn = this.$scopedSlots[name];
let nodes;
if (scopedSlotFn) { // scoped slot
props = props || {};
if (bindObject) {
if (!isObject(bindObject)) {
warn(
'slot v-bind without argument expects an Object',
this
);
}
props = extend(extend({}, bindObject), props);
}
nodes = scopedSlotFn(props) || fallback;
} else {
nodes = this.$slots[name] || fallback;
}
const target = props && props.slot;
if (target) {
return this.$createElement('template', { slot: target }, nodes)
} else {
return nodes
}
}
/* */
/**
* Runtime helper for resolving filters
*/
function resolveFilter (id) {
return resolveAsset(this.$options, 'filters', id, true) || identity
}
/* */
function isKeyNotMatch (expect, actual) {
if (Array.isArray(expect)) {
return expect.indexOf(actual) === -1
} else {
return expect !== actual
}
}
/**
* Runtime helper for checking keyCodes from config.
* exposed as Vue.prototype._k
* passing in eventKeyName as last argument separately for backwards compat
*/
function checkKeyCodes (
eventKeyCode,
key,
builtInKeyCode,
eventKeyName,
builtInKeyName
) {
const mappedKeyCode = config.keyCodes[key] || builtInKeyCode;
if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {
return isKeyNotMatch(builtInKeyName, eventKeyName)
} else if (mappedKeyCode) {
return isKeyNotMatch(mappedKeyCode, eventKeyCode)
} else if (eventKeyName) {
return hyphenate(eventKeyName) !== key
}
}
/* */
/**
* Runtime helper for merging v-bind="object" into a VNode's data.
*/
function bindObjectProps (
data,
tag,
value,
asProp,
isSync
) {
if (value) {
if (!isObject(value)) {
warn(
'v-bind without argument expects an Object or Array value',
this
);
} else {
if (Array.isArray(value)) {
value = toObject(value);
}
let hash;
for (const key in value) {
if (
key === 'class' ||
key === 'style' ||
isReservedAttribute(key)
) {
hash = data;
} else {
const type = data.attrs && data.attrs.type;
hash = asProp || config.mustUseProp(tag, type, key)
? data.domProps || (data.domProps = {})
: data.attrs || (data.attrs = {});
}
const camelizedKey = camelize(key);
const hyphenatedKey = hyphenate(key);
if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) {
hash[key] = value[key];
if (isSync) {
const on = data.on || (data.on = {});
on[`update:${key}`] = function ($event) {
value[key] = $event;
};
}
}
}
}
}
return data
}
/* */
/**
* Runtime helper for rendering static trees.
*/
function renderStatic (
index,
isInFor
) {
const cached = this._staticTrees || (this._staticTrees = []);
let tree = cached[index];
// if has already-rendered static tree and not inside v-for,
// we can reuse the same tree.
if (tree && !isInFor) {
return tree
}
// otherwise, render a fresh tree.
tree = cached[index] = this.$options.staticRenderFns[index].call(
this._renderProxy,
null,
this // for render fns generated for functional component templates
);
markStatic(tree, `__static__${index}`, false);
return tree
}
/**
* Runtime helper for v-once.
* Effectively it means marking the node as static with a unique key.
*/
function markOnce (
tree,
index,
key
) {
markStatic(tree, `__once__${index}${key ? `_${key}` : ``}`, true);
return tree
}
function markStatic (
tree,
key,
isOnce
) {
if (Array.isArray(tree)) {
for (let i = 0; i < tree.length; i++) {
if (tree[i] && typeof tree[i] !== 'string') {
markStaticNode(tree[i], `${key}_${i}`, isOnce);
}
}
} else {
markStaticNode(tree, key, isOnce);
}
}
function markStaticNode (node, key, isOnce) {
node.isStatic = true;
node.key = key;
node.isOnce = isOnce;
}
/* */
function bindObjectListeners (data, value) {
if (value) {
if (!isPlainObject(value)) {
warn(
'v-on without argument expects an Object value',
this
);
} else {
const on = data.on = data.on ? extend({}, data.on) : {};
for (const key in value) {
const existing = on[key];
const ours = value[key];
on[key] = existing ? [].concat(existing, ours) : ours;
}
}
}
return data
}
/* */
function resolveScopedSlots (
fns, // see flow/vnode
res,
// the following are added in 2.6
hasDynamicKeys,
contentHashKey
) {
res = res || { $stable: !hasDynamicKeys };
for (let i = 0; i < fns.length; i++) {
const slot = fns[i];
if (Array.isArray(slot)) {
resolveScopedSlots(slot, res, hasDynamicKeys);
} else if (slot) {
// marker for reverse proxying v-slot without scope on this.$slots
if (slot.proxy) {
slot.fn.proxy = true;
}
res[slot.key] = slot.fn;
}
}
if (contentHashKey) {
(res).$key = contentHashKey;
}
return res
}
/* */
function bindDynamicKeys (baseObj, values) {
for (let i = 0; i < values.length; i += 2) {
const key = values[i];
if (typeof key === 'string' && key) {
baseObj[values[i]] = values[i + 1];
} else if (key !== '' && key !== null) {
// null is a special value for explicitly removing a binding
warn(
`Invalid value for dynamic directive argument (expected string or null): ${key}`,
this
);
}
}
return baseObj
}
// helper to dynamically append modifier runtime markers to event names.
// ensure only append when value is already string, otherwise it will be cast
// to string and cause the type check to miss.
function prependModifier (value, symbol) {
return typeof value === 'string' ? symbol + value : value
}
/* */
function installRenderHelpers (target) {
target._o = markOnce;
target._n = toNumber;
target._s = toString;
target._l = renderList;
target._t = renderSlot;
target._q = looseEqual;
target._i = looseIndexOf;
target._m = renderStatic;
target._f = resolveFilter;
target._k = checkKeyCodes;
target._b = bindObjectProps;
target._v = createTextVNode;
target._e = createEmptyVNode;
target._u = resolveScopedSlots;
target._g = bindObjectListeners;
target._d = bindDynamicKeys;
target._p = prependModifier;
}
/* */
function FunctionalRenderContext (
data,
props,
children,
parent,
Ctor
) {
const options = Ctor.options;
// ensure the createElement function in functional components
// gets a unique context - this is necessary for correct named slot check
let contextVm;
if (hasOwn(parent, '_uid')) {
contextVm = Object.create(parent);
// $flow-disable-line
contextVm._original = parent;
} else {
// the context vm passed in is a functional context as well.
// in this case we want to make sure we are able to get a hold to the
// real context instance.
contextVm = parent;
// $flow-disable-line
parent = parent._original;
}
const isCompiled = isTrue(options._compiled);
const needNormalization = !isCompiled;
this.data = data;
this.props = props;
this.children = children;
this.parent = parent;
this.listeners = data.on || emptyObject;
this.injections = resolveInject(options.inject, parent);
this.slots = () => {
if (!this.$slots) {
normalizeScopedSlots(
data.scopedSlots,
this.$slots = resolveSlots(children, parent)
);
}
return this.$slots
};
Object.defineProperty(this, 'scopedSlots', ({
enumerable: true,
get () {
return normalizeScopedSlots(data.scopedSlots, this.slots())
}
}));
// support for compiled functional template
if (isCompiled) {
// exposing $options for renderStatic()
this.$options = options;
// pre-resolve slots for renderSlot()
this.$slots = this.slots();
this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots);
}
if (options._scopeId) {
this._c = (a, b, c, d) => {
const vnode = createElement(contextVm, a, b, c, d, needNormalization);
if (vnode && !Array.isArray(vnode)) {
vnode.fnScopeId = options._scopeId;
vnode.fnContext = parent;
}
return vnode
};
} else {
this._c = (a, b, c, d) => createElement(contextVm, a, b, c, d, needNormalization);
}
}
installRenderHelpers(FunctionalRenderContext.prototype);
function createFunctionalComponent (
Ctor,
propsData,
data,
contextVm,
children
) {
const options = Ctor.options;
const props = {};
const propOptions = options.props;
if (isDef(propOptions)) {
for (const key in propOptions) {
props[key] = validateProp(key, propOptions, propsData || emptyObject);
}
} else {
if (isDef(data.attrs)) mergeProps(props, data.attrs);
if (isDef(data.props)) mergeProps(props, data.props);
}
const renderContext = new FunctionalRenderContext(
data,
props,
children,
contextVm,
Ctor
);
const vnode = options.render.call(null, renderContext._c, renderContext);
if (vnode instanceof VNode) {
return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)
} else if (Array.isArray(vnode)) {
const vnodes = normalizeChildren(vnode) || [];
const res = new Array(vnodes.length);
for (let i = 0; i < vnodes.length; i++) {
res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);
}
return res
}
}
function cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) {
// #7817 clone node before setting fnContext, otherwise if the node is reused
// (e.g. it was from a cached normal slot) the fnContext causes named slots
// that should not be matched to match.
const clone = cloneVNode(vnode);
clone.fnContext = contextVm;
clone.fnOptions = options;
{
(clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;
}
if (data.slot) {
(clone.data || (clone.data = {})).slot = data.slot;
}
return clone
}
function mergeProps (to, from) {
for (const key in from) {
to[camelize(key)] = from[key];
}
}
/* */
/* */
/* */
/* */
// inline hooks to be invoked on component VNodes during patch
const componentVNodeHooks = {
init (vnode, hydrating) {
if (
vnode.componentInstance &&
!vnode.componentInstance._isDestroyed &&
vnode.data.keepAlive
) {
// kept-alive components, treat as a patch
const mountedNode = vnode; // work around flow
componentVNodeHooks.prepatch(mountedNode, mountedNode);
} else {
const child = vnode.componentInstance = createComponentInstanceForVnode(
vnode,
activeInstance
);
child.$mount(hydrating ? vnode.elm : undefined, hydrating);
}
},
prepatch (oldVnode, vnode) {
const options = vnode.componentOptions;
const child = vnode.componentInstance = oldVnode.componentInstance;
updateChildComponent(
child,
options.propsData, // updated props
options.listeners, // updated listeners
vnode, // new parent vnode
options.children // new children
);
},
insert (vnode) {
const { context, componentInstance } = vnode;
if (!componentInstance._isMounted) {
componentInstance._isMounted = true;
callHook(componentInstance, 'mounted');
}
if (vnode.data.keepAlive) {
if (context._isMounted) {
// vue-router#1212
// During updates, a kept-alive component's child components may
// change, so directly walking the tree here may call activated hooks
// on incorrect children. Instead we push them into a queue which will
// be processed after the whole patch process ended.
queueActivatedComponent(componentInstance);
} else {
activateChildComponent(componentInstance, true /* direct */);
}
}
},
destroy (vnode) {
const { componentInstance } = vnode;
if (!componentInstance._isDestroyed) {
if (!vnode.data.keepAlive) {
componentInstance.$destroy();
} else {
deactivateChildComponent(componentInstance, true /* direct */);
}
}
}
};
const hooksToMerge = Object.keys(componentVNodeHooks);
function createComponent (
Ctor,
data,
context,
children,
tag
) {
if (isUndef(Ctor)) {
return
}
const baseCtor = context.$options._base;
// plain options object: turn it into a constructor
if (isObject(Ctor)) {
Ctor = baseCtor.extend(Ctor);
}
// if at this stage it's not a constructor or an async component factory,
// reject.
if (typeof Ctor !== 'function') {
{
warn(`Invalid Component definition: ${String(Ctor)}`, context);
}
return
}
// async component
let asyncFactory;
if (isUndef(Ctor.cid)) {
asyncFactory = Ctor;
Ctor = resolveAsyncComponent(asyncFactory, baseCtor);
if (Ctor === undefined) {
// return a placeholder node for async component, which is rendered
// as a comment node but preserves all the raw information for the node.
// the information will be used for async server-rendering and hydration.
return createAsyncPlaceholder(
asyncFactory,
data,
context,
children,
tag
)
}
}
data = data || {};
// resolve constructor options in case global mixins are applied after
// component constructor creation
resolveConstructorOptions(Ctor);
// transform component v-model data into props & events
if (isDef(data.model)) {
transformModel(Ctor.options, data);
}
// extract props
const propsData = extractPropsFromVNodeData(data, Ctor, tag);
// functional component
if (isTrue(Ctor.options.functional)) {
return createFunctionalComponent(Ctor, propsData, data, context, children)
}
// extract listeners, since these needs to be treated as
// child component listeners instead of DOM listeners
const listeners = data.on;
// replace with listeners with .native modifier
// so it gets processed during parent component patch.
data.on = data.nativeOn;
if (isTrue(Ctor.options.abstract)) {
// abstract components do not keep anything
// other than props & listeners & slot
// work around flow
const slot = data.slot;
data = {};
if (slot) {
data.slot = slot;
}
}
// install component management hooks onto the placeholder node
installComponentHooks(data);
// return a placeholder vnode
const name = Ctor.options.name || tag;
const vnode = new VNode(
`vue-component-${Ctor.cid}${name ? `-${name}` : ''}`,
data, undefined, undefined, undefined, context,
{ Ctor, propsData, listeners, tag, children },
asyncFactory
);
return vnode
}
function createComponentInstanceForVnode (
vnode, // we know it's MountedComponentVNode but flow doesn't
parent, // activeInstance in lifecycle state
) {
const options = {
_isComponent: true,
_parentVnode: vnode,
parent
};
// check inline-template render functions
const inlineTemplate = vnode.data.inlineTemplate;
if (isDef(inlineTemplate)) {
options.render = inlineTemplate.render;
options.staticRenderFns = inlineTemplate.staticRenderFns;
}
return new vnode.componentOptions.Ctor(options)
}
function installComponentHooks (data) {
const hooks = data.hook || (data.hook = {});
for (let i = 0; i < hooksToMerge.length; i++) {
const key = hooksToMerge[i];
const existing = hooks[key];
const toMerge = componentVNodeHooks[key];
if (existing !== toMerge && !(existing && existing._merged)) {
hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;
}
}
}
function mergeHook$1 (f1, f2) {
const merged = (a, b) => {
// flow complains about extra args which is why we use any
f1(a, b);
f2(a, b);
};
merged._merged = true;
return merged
}
// transform component v-model info (value and callback) into
// prop and event handler respectively.
function transformModel (options, data) {
const prop = (options.model && options.model.prop) || 'value';
const event = (options.model && options.model.event) || 'input'
;(data.attrs || (data.attrs = {}))[prop] = data.model.value;
const on = data.on || (data.on = {});
const existing = on[event];
const callback = data.model.callback;
if (isDef(existing)) {
if (
Array.isArray(existing)
? existing.indexOf(callback) === -1
: existing !== callback
) {
on[event] = [callback].concat(existing);
}
} else {
on[event] = callback;
}
}
/* */
const SIMPLE_NORMALIZE = 1;
const ALWAYS_NORMALIZE = 2;
// wrapper function for providing a more flexible interface
// without getting yelled at by flow
function createElement (
context,
tag,
data,
children,
normalizationType,
alwaysNormalize
) {
if (Array.isArray(data) || isPrimitive(data)) {
normalizationType = children;
children = data;
data = undefined;
}
if (isTrue(alwaysNormalize)) {
normalizationType = ALWAYS_NORMALIZE;
}
return _createElement(context, tag, data, children, normalizationType)
}
function _createElement (
context,
tag,
data,
children,
normalizationType
) {
if (isDef(data) && isDef((data).__ob__)) {
warn(
`Avoid using observed data object as vnode data: ${JSON.stringify(data)}\n` +
'Always create fresh vnode data objects in each render!',
context
);
return createEmptyVNode()
}
// object syntax in v-bind
if (isDef(data) && isDef(data.is)) {
tag = data.is;
}
if (!tag) {
// in case of component :is set to falsy value
return createEmptyVNode()
}
// warn against non-primitive key
if (isDef(data) && isDef(data.key) && !isPrimitive(data.key)
) {
{
warn(
'Avoid using non-primitive value as key, ' +
'use string/number value instead.',
context
);
}
}
// support single function children as default scoped slot
if (Array.isArray(children) &&
typeof children[0] === 'function'
) {
data = data || {};
data.scopedSlots = { default: children[0] };
children.length = 0;
}
if (normalizationType === ALWAYS_NORMALIZE) {
children = normalizeChildren(children);
} else if (normalizationType === SIMPLE_NORMALIZE) {
children = simpleNormalizeChildren(children);
}
let vnode, ns;
if (typeof tag === 'string') {
let Ctor;
ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
if (config.isReservedTag(tag)) {
// platform built-in elements
if (isDef(data) && isDef(data.nativeOn)) {
warn(
`The .native modifier for v-on is only valid on components but it was used on <${tag}>.`,
context
);
}
vnode = new VNode(
config.parsePlatformTagName(tag), data, children,
undefined, undefined, context
);
} else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
// component
vnode = createComponent(Ctor, data, context, children, tag);
} else {
// unknown or unlisted namespaced elements
// check at runtime because it may get assigned a namespace when its
// parent normalizes children
vnode = new VNode(
tag, data, children,
undefined, undefined, context
);
}
} else {
// direct component options / constructor
vnode = createComponent(tag, data, context, children);
}
if (Array.isArray(vnode)) {
return vnode
} else if (isDef(vnode)) {
if (isDef(ns)) applyNS(vnode, ns);
if (isDef(data)) registerDeepBindings(data);
return vnode
} else {
return createEmptyVNode()
}
}
function applyNS (vnode, ns, force) {
vnode.ns = ns;
if (vnode.tag === 'foreignObject') {
// use default namespace inside foreignObject
ns = undefined;
force = true;
}
if (isDef(vnode.children)) {
for (let i = 0, l = vnode.children.length; i < l; i++) {
const child = vnode.children[i];
if (isDef(child.tag) && (
isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
applyNS(child, ns, force);
}
}
}
}
// ref #5318
// necessary to ensure parent re-render when deep bindings like :style and
// :class are used on slot nodes
function registerDeepBindings (data) {
if (isObject(data.style)) {
traverse(data.style);
}
if (isObject(data.class)) {
traverse(data.class);
}
}
/* */
function initRender (vm) {
vm._vnode = null; // the root of the child tree
vm._staticTrees = null; // v-once cached trees
const options = vm.$options;
const parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
const renderContext = parentVnode && parentVnode.context;
vm.$slots = resolveSlots(options._renderChildren, renderContext);
vm.$scopedSlots = emptyObject;
// bind the createElement fn to this instance
// so that we get proper render context inside it.
// args order: tag, data, children, normalizationType, alwaysNormalize
// internal version is used by render functions compiled from templates
vm._c = (a, b, c, d) => createElement(vm, a, b, c, d, false);
// normalization is always applied for the public version, used in
// user-written render functions.
vm.$createElement = (a, b, c, d) => createElement(vm, a, b, c, d, true);
// $attrs & $listeners are exposed for easier HOC creation.
// they need to be reactive so that HOCs using them are always updated
const parentData = parentVnode && parentVnode.data;
/* istanbul ignore else */
{
defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, () => {
!isUpdatingChildComponent && warn(`$attrs is readonly.`, vm);
}, true);
defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, () => {
!isUpdatingChildComponent && warn(`$listeners is readonly.`, vm);
}, true);
}
}
let currentRenderingInstance = null;
function renderMixin (Vue) {
// install runtime convenience helpers
installRenderHelpers(Vue.prototype);
Vue.prototype.$nextTick = function (fn) {
return nextTick(fn, this)
};
Vue.prototype._render = function () {
const vm = this;
const { render, _parentVnode } = vm.$options;
if (_parentVnode) {
vm.$scopedSlots = normalizeScopedSlots(
_parentVnode.data.scopedSlots,
vm.$slots,
vm.$scopedSlots
);
}
// set parent vnode. this allows render functions to have access
// to the data on the placeholder node.
vm.$vnode = _parentVnode;
// render self
let vnode;
try {
// There's no need to maintain a stack because all render fns are called
// separately from one another. Nested component's render fns are called
// when parent component is patched.
currentRenderingInstance = vm;
vnode = render.call(vm._renderProxy, vm.$createElement);
} catch (e) {
handleError(e, vm, `render`);
// return error render result,
// or previous vnode to prevent render error causing blank component
/* istanbul ignore else */
if (vm.$options.renderError) {
try {
vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
} catch (e) {
handleError(e, vm, `renderError`);
vnode = vm._vnode;
}
} else {
vnode = vm._vnode;
}
} finally {
currentRenderingInstance = null;
}
// if the returned array contains only a single node, allow it
if (Array.isArray(vnode) && vnode.length === 1) {
vnode = vnode[0];
}
// return empty vnode in case the render function errored out
if (!(vnode instanceof VNode)) {
if (Array.isArray(vnode)) {
warn(
'Multiple root nodes returned from render function. Render function ' +
'should return a single root node.',
vm
);
}
vnode = createEmptyVNode();
}
// set parent
vnode.parent = _parentVnode;
return vnode
};
}
/* */
function ensureCtor (comp, base) {
if (
comp.__esModule ||
(hasSymbol && comp[Symbol.toStringTag] === 'Module')
) {
comp = comp.default;
}
return isObject(comp)
? base.extend(comp)
: comp
}
function createAsyncPlaceholder (
factory,
data,
context,
children,
tag
) {
const node = createEmptyVNode();
node.asyncFactory = factory;
node.asyncMeta = { data, context, children, tag };
return node
}
function resolveAsyncComponent (
factory,
baseCtor
) {
if (isTrue(factory.error) && isDef(factory.errorComp)) {
return factory.errorComp
}
if (isDef(factory.resolved)) {
return factory.resolved
}
const owner = currentRenderingInstance;
if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {
// already pending
factory.owners.push(owner);
}
if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
return factory.loadingComp
}
if (owner && !isDef(factory.owners)) {
const owners = factory.owners = [owner];
let sync = true;
let timerLoading = null;
let timerTimeout = null
;(owner).$on('hook:destroyed', () => remove(owners, owner));
const forceRender = (renderCompleted) => {
for (let i = 0, l = owners.length; i < l; i++) {
(owners[i]).$forceUpdate();
}
if (renderCompleted) {
owners.length = 0;
if (timerLoading !== null) {
clearTimeout(timerLoading);
timerLoading = null;
}
if (timerTimeout !== null) {
clearTimeout(timerTimeout);
timerTimeout = null;
}
}
};
const resolve = once((res) => {
// cache resolved
factory.resolved = ensureCtor(res, baseCtor);
// invoke callbacks only if this is not a synchronous resolve
// (async resolves are shimmed as synchronous during SSR)
if (!sync) {
forceRender(true);
} else {
owners.length = 0;
}
});
const reject = once(reason => {
warn(
`Failed to resolve async component: ${String(factory)}` +
(reason ? `\nReason: ${reason}` : '')
);
if (isDef(factory.errorComp)) {
factory.error = true;
forceRender(true);
}
});
const res = factory(resolve, reject);
if (isObject(res)) {
if (isPromise(res)) {
// () => Promise
if (isUndef(factory.resolved)) {
res.then(resolve, reject);
}
} else if (isPromise(res.component)) {
res.component.then(resolve, reject);
if (isDef(res.error)) {
factory.errorComp = ensureCtor(res.error, baseCtor);
}
if (isDef(res.loading)) {
factory.loadingComp = ensureCtor(res.loading, baseCtor);
if (res.delay === 0) {
factory.loading = true;
} else {
timerLoading = setTimeout(() => {
timerLoading = null;
if (isUndef(factory.resolved) && isUndef(factory.error)) {
factory.loading = true;
forceRender(false);
}
}, res.delay || 200);
}
}
if (isDef(res.timeout)) {
timerTimeout = setTimeout(() => {
timerTimeout = null;
if (isUndef(factory.resolved)) {
reject(
`timeout (${res.timeout}ms)`
);
}
}, res.timeout);
}
}
}
sync = false;
// return in case resolved synchronously
return factory.loading
? factory.loadingComp
: factory.resolved
}
}
/* */
function isAsyncPlaceholder (node) {
return node.isComment && node.asyncFactory
}
/* */
function getFirstComponentChild (children) {
if (Array.isArray(children)) {
for (let i = 0; i < children.length; i++) {
const c = children[i];
if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
return c
}
}
}
}
/* */
/* */
function initEvents (vm) {
vm._events = Object.create(null);
vm._hasHookEvent = false;
// init parent attached events
const listeners = vm.$options._parentListeners;
if (listeners) {
updateComponentListeners(vm, listeners);
}
}
let target;
function add (event, fn) {
target.$on(event, fn);
}
function remove$1 (event, fn) {
target.$off(event, fn);
}
function createOnceHandler (event, fn) {
const _target = target;
return function onceHandler () {
const res = fn.apply(null, arguments);
if (res !== null) {
_target.$off(event, onceHandler);
}
}
}
function updateComponentListeners (
vm,
listeners,
oldListeners
) {
target = vm;
updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);
target = undefined;
}
function eventsMixin (Vue) {
const hookRE = /^hook:/;
Vue.prototype.$on = function (event, fn) {
const vm = this;
if (Array.isArray(event)) {
for (let i = 0, l = event.length; i < l; i++) {
vm.$on(event[i], fn);
}
} else {
(vm._events[event] || (vm._events[event] = [])).push(fn);
// optimize hook:event cost by using a boolean flag marked at registration
// instead of a hash lookup
if (hookRE.test(event)) {
vm._hasHookEvent = true;
}
}
return vm
};
Vue.prototype.$once = function (event, fn) {
const vm = this;
function on () {
vm.$off(event, on);
fn.apply(vm, arguments);
}
on.fn = fn;
vm.$on(event, on);
return vm
};
Vue.prototype.$off = function (event, fn) {
const vm = this;
// all
if (!arguments.length) {
vm._events = Object.create(null);
return vm
}
// array of events
if (Array.isArray(event)) {
for (let i = 0, l = event.length; i < l; i++) {
vm.$off(event[i], fn);
}
return vm
}
// specific event
const cbs = vm._events[event];
if (!cbs) {
return vm
}
if (!fn) {
vm._events[event] = null;
return vm
}
// specific handler
let cb;
let i = cbs.length;
while (i--) {
cb = cbs[i];
if (cb === fn || cb.fn === fn) {
cbs.splice(i, 1);
break
}
}
return vm
};
Vue.prototype.$emit = function (event) {
const vm = this;
{
const lowerCaseEvent = event.toLowerCase();
if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
tip(
`Event "${lowerCaseEvent}" is emitted in component ` +
`${formatComponentName(vm)} 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 cbs = vm._events[event];
if (cbs) {
cbs = cbs.length > 1 ? toArray(cbs) : cbs;
const args = toArray(arguments, 1);
const info = `event handler for "${event}"`;
for (let i = 0, l = cbs.length; i < l; i++) {
invokeWithErrorHandling(cbs[i], vm, args, vm, info);
}
}
return vm
};
}
/* */
let activeInstance = null;
let isUpdatingChildComponent = false;
function setActiveInstance(vm) {
const prevActiveInstance = activeInstance;
activeInstance = vm;
return () => {
activeInstance = prevActiveInstance;
}
}
function initLifecycle (vm) {
const options = vm.$options;
// locate first non-abstract parent
let parent = options.parent;
if (parent && !options.abstract) {
while (parent.$options.abstract && parent.$parent) {
parent = parent.$parent;
}
parent.$children.push(vm);
}
vm.$parent = parent;
vm.$root = parent ? parent.$root : vm;
vm.$children = [];
vm.$refs = {};
vm._watcher = null;
vm._inactive = null;
vm._directInactive = false;
vm._isMounted = false;
vm._isDestroyed = false;
vm._isBeingDestroyed = false;
}
function lifecycleMixin (Vue) {
Vue.prototype._update = function (vnode, hydrating) {
const vm = this;
const prevEl = vm.$el;
const prevVnode = vm._vnode;
const restoreActiveInstance = setActiveInstance(vm);
vm._vnode = vnode;
// Vue.prototype.__patch__ is injected in entry points
// based on the rendering backend used.
if (!prevVnode) {
// initial render
vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */);
} else {
// updates
vm.$el = vm.__patch__(prevVnode, vnode);
}
restoreActiveInstance();
// update __vue__ reference
if (prevEl) {
prevEl.__vue__ = null;
}
if (vm.$el) {
vm.$el.__vue__ = vm;
}
// if parent is an HOC, update its $el as well
if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
vm.$parent.$el = vm.$el;
}
// updated hook is called by the scheduler to ensure that children are
// updated in a parent's updated hook.
};
Vue.prototype.$forceUpdate = function () {
const vm = this;
if (vm._watcher) {
vm._watcher.update();
}
};
Vue.prototype.$destroy = function () {
const vm = this;
if (vm._isBeingDestroyed) {
return
}
callHook(vm, 'beforeDestroy');
vm._isBeingDestroyed = true;
// remove self from parent
const parent = vm.$parent;
if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
remove(parent.$children, vm);
}
// teardown watchers
if (vm._watcher) {
vm._watcher.teardown();
}
let i = vm._watchers.length;
while (i--) {
vm._watchers[i].teardown();
}
// remove reference from data ob
// frozen object may not have observer.
if (vm._data.__ob__) {
vm._data.__ob__.vmCount--;
}
// call the last hook...
vm._isDestroyed = true;
// invoke destroy hooks on current rendered tree
vm.__patch__(vm._vnode, null);
// fire destroyed hook
callHook(vm, 'destroyed');
// turn off all instance listeners.
vm.$off();
// remove __vue__ reference
if (vm.$el) {
vm.$el.__vue__ = null;
}
// release circular reference (#6759)
if (vm.$vnode) {
vm.$vnode.parent = null;
}
};
}
function mountComponent (
vm,
el,
hydrating
) {
vm.$el = el;
if (!vm.$options.render) {
vm.$options.render = createEmptyVNode;
{
/* istanbul ignore if */
if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
vm.$options.el || el) {
warn(
'You are using the runtime-only build of Vue where the template ' +
'compiler is not available. Either pre-compile the templates into ' +
'render functions, or use the compiler-included build.',
vm
);
} else {
warn(
'Failed to mount component: template or render function not defined.',
vm
);
}
}
}
callHook(vm, 'beforeMount');
let updateComponent;
/* istanbul ignore if */
if (config.performance && mark) {
updateComponent = () => {
const name = vm._name;
const id = vm._uid;
const startTag = `vue-perf-start:${id}`;
const endTag = `vue-perf-end:${id}`;
mark(startTag);
const vnode = vm._render();
mark(endTag);
measure(`vue ${name} render`, startTag, endTag);
mark(startTag);
vm._update(vnode, hydrating);
mark(endTag);
measure(`vue ${name} patch`, startTag, endTag);
};
} else {
updateComponent = () => {
vm._update(vm._render(), hydrating);
};
}
// we set this to vm._watcher inside the watcher's constructor
// since the watcher's initial patch may call $forceUpdate (e.g. inside child
// component's mounted hook), which relies on vm._watcher being already defined
new Watcher(vm, updateComponent, noop, {
before () {
if (vm._isMounted && !vm._isDestroyed) {
callHook(vm, 'beforeUpdate');
}
}
}, true /* isRenderWatcher */);
hydrating = false;
// manually mounted instance, call mounted on self
// mounted is called for render-created child components in its inserted hook
if (vm.$vnode == null) {
vm._isMounted = true;
callHook(vm, 'mounted');
}
return vm
}
function updateChildComponent (
vm,
propsData,
listeners,
parentVnode,
renderChildren
) {
{
isUpdatingChildComponent = true;
}
// determine whether component has slot children
// we need to do this before overwriting $options._renderChildren.
// check if there are dynamic scopedSlots (hand-written or compiled but with
// dynamic slot names). Static scoped slots compiled from template has the
// "$stable" marker.
const newScopedSlots = parentVnode.data.scopedSlots;
const oldScopedSlots = vm.$scopedSlots;
const hasDynamicScopedSlot = !!(
(newScopedSlots && !newScopedSlots.$stable) ||
(oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) ||
(newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key)
);
// Any static slot children from the parent may have changed during parent's
// update. Dynamic scoped slots may also have changed. In such cases, a forced
// update is necessary to ensure correctness.
const needsForceUpdate = !!(
renderChildren || // has new static slots
vm.$options._renderChildren || // has old static slots
hasDynamicScopedSlot
);
vm.$options._parentVnode = parentVnode;
vm.$vnode = parentVnode; // update vm's placeholder node without re-render
if (vm._vnode) { // update child tree's parent
vm._vnode.parent = parentVnode;
}
vm.$options._renderChildren = renderChildren;
// update $attrs and $listeners hash
// these are also reactive so they may trigger child update if the child
// used them during render
vm.$attrs = parentVnode.data.attrs || emptyObject;
vm.$listeners = listeners || emptyObject;
// update props
if (propsData && vm.$options.props) {
toggleObserving(false);
const props = vm._props;
const propKeys = vm.$options._propKeys || [];
for (let i = 0; i < propKeys.length; i++) {
const key = propKeys[i];
const propOptions = vm.$options.props; // wtf flow?
props[key] = validateProp(key, propOptions, propsData, vm);
}
toggleObserving(true);
// keep a copy of raw propsData
vm.$options.propsData = propsData;
}
// update listeners
listeners = listeners || emptyObject;
const oldListeners = vm.$options._parentListeners;
vm.$options._parentListeners = listeners;
updateComponentListeners(vm, listeners, oldListeners);
// resolve slots + force update if has children
if (needsForceUpdate) {
vm.$slots = resolveSlots(renderChildren, parentVnode.context);
vm.$forceUpdate();
}
{
isUpdatingChildComponent = false;
}
}
function isInInactiveTree (vm) {
while (vm && (vm = vm.$parent)) {
if (vm._inactive) return true
}
return false
}
function activateChildComponent (vm, direct) {
if (direct) {
vm._directInactive = false;
if (isInInactiveTree(vm)) {
return
}
} else if (vm._directInactive) {
return
}
if (vm._inactive || vm._inactive === null) {
vm._inactive = false;
for (let i = 0; i < vm.$children.length; i++) {
activateChildComponent(vm.$children[i]);
}
callHook(vm, 'activated');
}
}
function deactivateChildComponent (vm, direct) {
if (direct) {
vm._directInactive = true;
if (isInInactiveTree(vm)) {
return
}
}
if (!vm._inactive) {
vm._inactive = true;
for (let i = 0; i < vm.$children.length; i++) {
deactivateChildComponent(vm.$children[i]);
}
callHook(vm, 'deactivated');
}
}
function callHook (vm, hook) {
// #7573 disable dep collection when invoking lifecycle hooks
pushTarget();
const handlers = vm.$options[hook];
const info = `${hook} hook`;
if (handlers) {
for (let i = 0, j = handlers.length; i < j; i++) {
invokeWithErrorHandling(handlers[i], vm, null, vm, info);
}
}
if (vm._hasHookEvent) {
vm.$emit('hook:' + hook);
}
popTarget();
}
/* */
const MAX_UPDATE_COUNT = 100;
const queue = [];
const activatedChildren = [];
let has = {};
let circular = {};
let waiting = false;
let flushing = false;
let index = 0;
/**
* Reset the scheduler's state.
*/
function resetSchedulerState () {
index = queue.length = activatedChildren.length = 0;
has = {};
{
circular = {};
}
waiting = flushing = false;
}
// Async edge case #6566 requires saving the timestamp when event listeners are
// attached. However, calling performance.now() has a perf overhead especially
// if the page has thousands of event listeners. Instead, we take a timestamp
// every time the scheduler flushes and use that for all event listeners
// attached during that flush.
let currentFlushTimestamp = 0;
// Async edge case fix requires storing an event listener's attach timestamp.
let getNow = Date.now;
// Determine what event timestamp the browser is using. Annoyingly, the
// timestamp can either be hi-res (relative to page load) or low-res
// (relative to UNIX epoch), so in order to compare time we have to use the
// same timestamp type when saving the flush timestamp.
// All IE versions use low-res event timestamps, and have problematic clock
// implementations (#9632)
if (inBrowser && !isIE) {
const performance = window.performance;
if (
performance &&
typeof performance.now === 'function' &&
getNow() > document.createEvent('Event').timeStamp
) {
// if the event timestamp, although evaluated AFTER the Date.now(), is
// smaller than it, it means the event is using a hi-res timestamp,
// and we need to use the hi-res version for event listener timestamps as
// well.
getNow = () => performance.now();
}
}
/**
* Flush both queues and run the watchers.
*/
function flushSchedulerQueue () {
currentFlushTimestamp = getNow();
flushing = true;
let watcher, id;
// Sort queue before flush.
// This ensures that:
// 1. Components are updated from parent to child. (because parent is always
// created before the child)
// 2. A component's user watchers are run before its render watcher (because
// user watchers are created before the render watcher)
// 3. If a component is destroyed during a parent component's watcher run,
// its watchers can be skipped.
queue.sort((a, b) => a.id - b.id);
// do not cache length because more watchers might be pushed
// as we run existing watchers
for (index = 0; index < queue.length; index++) {
watcher = queue[index];
if (watcher.before) {
watcher.before();
}
id = watcher.id;
has[id] = null;
watcher.run();
// in dev build, check and stop circular updates.
if (has[id] != null) {
circular[id] = (circular[id] || 0) + 1;
if (circular[id] > MAX_UPDATE_COUNT) {
warn(
'You may have an infinite update loop ' + (
watcher.user
? `in watcher with expression "${watcher.expression}"`
: `in a component render function.`
),
watcher.vm
);
break
}
}
}
// keep copies of post queues before resetting state
const activatedQueue = activatedChildren.slice();
const updatedQueue = queue.slice();
resetSchedulerState();
// call component updated and activated hooks
callActivatedHooks(activatedQueue);
callUpdatedHooks(updatedQueue);
// devtool hook
/* istanbul ignore if */
if (devtools && config.devtools) {
devtools.emit('flush');
}
}
function callUpdatedHooks (queue) {
let i = queue.length;
while (i--) {
const watcher = queue[i];
const vm = watcher.vm;
if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {
callHook(vm, 'updated');
}
}
}
/**
* Queue a kept-alive component that was activated during patch.
* The queue will be processed after the entire tree has been patched.
*/
function queueActivatedComponent (vm) {
// setting _inactive to false here so that a render function can
// rely on checking whether it's in an inactive tree (e.g. router-view)
vm._inactive = false;
activatedChildren.push(vm);
}
function callActivatedHooks (queue) {
for (let i = 0; i < queue.length; i++) {
queue[i]._inactive = true;
activateChildComponent(queue[i], true /* true */);
}
}
/**
* Push a watcher into the watcher queue.
* Jobs with duplicate IDs will be skipped unless it's
* pushed when the queue is being flushed.
*/
function queueWatcher (watcher) {
const id = watcher.id;
if (has[id] == null) {
has[id] = true;
if (!flushing) {
queue.push(watcher);
} else {
// if already flushing, splice the watcher based on its id
// if already past its id, it will be run next immediately.
let i = queue.length - 1;
while (i > index && queue[i].id > watcher.id) {
i--;
}
queue.splice(i + 1, 0, watcher);
}
// queue the flush
if (!waiting) {
waiting = true;
if (!config.async) {
flushSchedulerQueue();
return
}
nextTick(flushSchedulerQueue);
}
}
}
/* */
let uid$2 = 0;
/**
* A watcher parses an expression, collects dependencies,
* and fires callback when the expression value changes.
* This is used for both the $watch() api and directives.
*/
class Watcher {
constructor (
vm,
expOrFn,
cb,
options,
isRenderWatcher
) {
this.vm = vm;
if (isRenderWatcher) {
vm._watcher = this;
}
vm._watchers.push(this);
// options
if (options) {
this.deep = !!options.deep;
this.user = !!options.user;
this.lazy = !!options.lazy;
this.sync = !!options.sync;
this.before = options.before;
} else {
this.deep = this.user = this.lazy = this.sync = false;
}
this.cb = cb;
this.id = ++uid$2; // uid for batching
this.active = true;
this.dirty = this.lazy; // for lazy watchers
this.deps = [];
this.newDeps = [];
this.depIds = new _Set();
this.newDepIds = new _Set();
this.expression = expOrFn.toString();
// parse expression for getter
if (typeof expOrFn === 'function') {
this.getter = expOrFn;
} else {
this.getter = parsePath(expOrFn);
if (!this.getter) {
this.getter = noop;
warn(
`Failed watching path: "${expOrFn}" ` +
'Watcher only accepts simple dot-delimited paths. ' +
'For full control, use a function instead.',
vm
);
}
}
this.value = this.lazy
? undefined
: this.get();
}
/**
* Evaluate the getter, and re-collect dependencies.
*/
get () {
pushTarget(this);
let value;
const vm = this.vm;
try {
value = this.getter.call(vm, vm);
} catch (e) {
if (this.user) {
handleError(e, vm, `getter for watcher "${this.expression}"`);
} else {
throw e
}
} finally {
// "touch" every property so they are all tracked as
// dependencies for deep watching
if (this.deep) {
traverse(value);
}
popTarget();
this.cleanupDeps();
}
return value
}
/**
* Add a dependency to this directive.
*/
addDep (dep) {
const id = dep.id;
if (!this.newDepIds.has(id)) {
this.newDepIds.add(id);
this.newDeps.push(dep);
if (!this.depIds.has(id)) {
dep.addSub(this);
}
}
}
/**
* Clean up for dependency collection.
*/
cleanupDeps () {
let i = this.deps.length;
while (i--) {
const dep = this.deps[i];
if (!this.newDepIds.has(dep.id)) {
dep.removeSub(this);
}
}
let tmp = this.depIds;
this.depIds = this.newDepIds;
this.newDepIds = tmp;
this.newDepIds.clear();
tmp = this.deps;
this.deps = this.newDeps;
this.newDeps = tmp;
this.newDeps.length = 0;
}
/**
* Subscriber interface.
* Will be called when a dependency changes.
*/
update () {
/* istanbul ignore else */
if (this.lazy) {
this.dirty = true;
} else if (this.sync) {
this.run();
} else {
queueWatcher(this);
}
}
/**
* Scheduler job interface.
* Will be called by the scheduler.
*/
run () {
if (this.active) {
const value = this.get();
if (
value !== this.value ||
// Deep watchers and watchers on Object/Arrays should fire even
// when the value is the same, because the value may
// have mutated.
isObject(value) ||
this.deep
) {
// set new value
const oldValue = this.value;
this.value = value;
if (this.user) {
try {
this.cb.call(this.vm, value, oldValue);
} catch (e) {
handleError(e, this.vm, `callback for watcher "${this.expression}"`);
}
} else {
this.cb.call(this.vm, value, oldValue);
}
}
}
}
/**
* Evaluate the value of the watcher.
* This only gets called for lazy watchers.
*/
evaluate () {
this.value = this.get();
this.dirty = false;
}
/**
* Depend on all deps collected by this watcher.
*/
depend () {
let i = this.deps.length;
while (i--) {
this.deps[i].depend();
}
}
/**
* Remove self from all dependencies' subscriber list.
*/
teardown () {
if (this.active) {
// remove self from vm's watcher list
// this is a somewhat expensive operation so we skip it
// if the vm is being destroyed.
if (!this.vm._isBeingDestroyed) {
remove(this.vm._watchers, this);
}
let i = this.deps.length;
while (i--) {
this.deps[i].removeSub(this);
}
this.active = false;
}
}
}
/* */
const sharedPropertyDefinition = {
enumerable: true,
configurable: true,
get: noop,
set: noop
};
function proxy (target, sourceKey, key) {
sharedPropertyDefinition.get = function proxyGetter () {
return this[sourceKey][key]
};
sharedPropertyDefinition.set = function proxySetter (val) {
this[sourceKey][key] = val;
};
Object.defineProperty(target, key, sharedPropertyDefinition);
}
function initState (vm) {
vm._watchers = [];
const opts = vm.$options;
if (opts.props) initProps(vm, opts.props);
if (opts.methods) initMethods(vm, opts.methods);
if (opts.data) {
initData(vm);
} else {
observe(vm._data = {}, true /* asRootData */);
}
if (opts.computed) initComputed(vm, opts.computed);
if (opts.watch && opts.watch !== nativeWatch) {
initWatch(vm, opts.watch);
}
}
function initProps (vm, propsOptions) {
const propsData = vm.$options.propsData || {};
const props = vm._props = {};
// cache prop keys so that future props updates can iterate using Array
// instead of dynamic object key enumeration.
const keys = vm.$options._propKeys = [];
const isRoot = !vm.$parent;
// root instance props should be converted
if (!isRoot) {
toggleObserving(false);
}
for (const key in propsOptions) {
keys.push(key);
const value = validateProp(key, propsOptions, propsData, vm);
/* istanbul ignore else */
{
const hyphenatedKey = hyphenate(key);
if (isReservedAttribute(hyphenatedKey) ||
config.isReservedAttr(hyphenatedKey)) {
warn(
`"${hyphenatedKey}" is a reserved attribute and cannot be used as component prop.`,
vm
);
}
defineReactive$$1(props, key, value, () => {
if (!isRoot && !isUpdatingChildComponent) {
warn(
`Avoid mutating a prop directly since the value will be ` +
`overwritten whenever the parent component re-renders. ` +
`Instead, use a data or computed property based on the prop's ` +
`value. Prop being mutated: "${key}"`,
vm
);
}
});
}
// static props are already proxied on the component's prototype
// during Vue.extend(). We only need to proxy props defined at
// instantiation here.
if (!(key in vm)) {
proxy(vm, `_props`, key);
}
}
toggleObserving(true);
}
function initData (vm) {
let data = vm.$options.data;
data = vm._data = typeof data === 'function'
? getData(data, vm)
: data || {};
if (!isPlainObject(data)) {
data = {};
warn(
'data functions should return an object:\n' +
'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
vm
);
}
// proxy data on instance
const keys = Object.keys(data);
const props = vm.$options.props;
const methods = vm.$options.methods;
let i = keys.length;
while (i--) {
const key = keys[i];
{
if (methods && hasOwn(methods, key)) {
warn(
`Method "${key}" has already been defined as a data property.`,
vm
);
}
}
if (props && hasOwn(props, key)) {
warn(
`The data property "${key}" is already declared as a prop. ` +
`Use prop default value instead.`,
vm
);
} else if (!isReserved(key)) {
proxy(vm, `_data`, key);
}
}
// observe data
observe(data, true /* asRootData */);
}
function getData (data, vm) {
// #7573 disable dep collection when invoking data getters
pushTarget();
try {
return data.call(vm, vm)
} catch (e) {
handleError(e, vm, `data()`);
return {}
} finally {
popTarget();
}
}
const computedWatcherOptions = { lazy: true };
function initComputed (vm, computed) {
// $flow-disable-line
const watchers = vm._computedWatchers = Object.create(null);
// computed properties are just getters during SSR
const isSSR = isServerRendering();
for (const key in computed) {
const userDef = computed[key];
const getter = typeof userDef === 'function' ? userDef : userDef.get;
if (getter == null) {
warn(
`Getter is missing for computed property "${key}".`,
vm
);
}
if (!isSSR) {
// create internal watcher for the computed property.
watchers[key] = new Watcher(
vm,
getter || noop,
noop,
computedWatcherOptions
);
}
// component-defined computed properties are already defined on the
// component prototype. We only need to define computed properties defined
// at instantiation here.
if (!(key in vm)) {
defineComputed(vm, key, userDef);
} else {
if (key in vm.$data) {
warn(`The computed property "${key}" is already defined in data.`, vm);
} else if (vm.$options.props && key in vm.$options.props) {
warn(`The computed property "${key}" is already defined as a prop.`, vm);
}
}
}
}
function defineComputed (
target,
key,
userDef
) {
const shouldCache = !isServerRendering();
if (typeof userDef === 'function') {
sharedPropertyDefinition.get = shouldCache
? createComputedGetter(key)
: createGetterInvoker(userDef);
sharedPropertyDefinition.set = noop;
} else {
sharedPropertyDefinition.get = userDef.get
? shouldCache && userDef.cache !== false
? createComputedGetter(key)
: createGetterInvoker(userDef.get)
: noop;
sharedPropertyDefinition.set = userDef.set || noop;
}
if (sharedPropertyDefinition.set === noop) {
sharedPropertyDefinition.set = function () {
warn(
`Computed property "${key}" was assigned to but it has no setter.`,
this
);
};
}
Object.defineProperty(target, key, sharedPropertyDefinition);
}
function createComputedGetter (key) {
return function computedGetter () {
const watcher = this._computedWatchers && this._computedWatchers[key];
if (watcher) {
if (watcher.dirty) {
watcher.evaluate();
}
if (Dep.target) {
watcher.depend();
}
return watcher.value
}
}
}
function createGetterInvoker(fn) {
return function computedGetter () {
return fn.call(this, this)
}
}
function initMethods (vm, methods) {
const props = vm.$options.props;
for (const key in methods) {
{
if (typeof methods[key] !== 'function') {
warn(
`Method "${key}" has type "${typeof methods[key]}" in the component definition. ` +
`Did you reference the function correctly?`,
vm
);
}
if (props && hasOwn(props, key)) {
warn(
`Method "${key}" has already been defined as a prop.`,
vm
);
}
if ((key in vm) && isReserved(key)) {
warn(
`Method "${key}" conflicts with an existing Vue instance method. ` +
`Avoid defining component methods that start with _ or $.`
);
}
}
vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);
}
}
function initWatch (vm, watch) {
for (const key in watch) {
const handler = watch[key];
if (Array.isArray(handler)) {
for (let i = 0; i < handler.length; i++) {
createWatcher(vm, key, handler[i]);
}
} else {
createWatcher(vm, key, handler);
}
}
}
function createWatcher (
vm,
expOrFn,
handler,
options
) {
if (isPlainObject(handler)) {
options = handler;
handler = handler.handler;
}
if (typeof handler === 'string') {
handler = vm[handler];
}
return vm.$watch(expOrFn, handler, options)
}
function stateMixin (Vue) {
// flow somehow has problems with directly declared definition object
// when using Object.defineProperty, so we have to procedurally build up
// the object here.
const dataDef = {};
dataDef.get = function () { return this._data };
const propsDef = {};
propsDef.get = function () { return this._props };
{
dataDef.set = function () {
warn(
'Avoid replacing instance root $data. ' +
'Use nested data properties instead.',
this
);
};
propsDef.set = function () {
warn(`$props is readonly.`, this);
};
}
Object.defineProperty(Vue.prototype, '$data', dataDef);
Object.defineProperty(Vue.prototype, '$props', propsDef);
Vue.prototype.$set = set;
Vue.prototype.$delete = del;
Vue.prototype.$watch = function (
expOrFn,
cb,
options
) {
const vm = this;
if (isPlainObject(cb)) {
return createWatcher(vm, expOrFn, cb, options)
}
options = options || {};
options.user = true;
const watcher = new Watcher(vm, expOrFn, cb, options);
if (options.immediate) {
try {
cb.call(vm, watcher.value);
} catch (error) {
handleError(error, vm, `callback for immediate watcher "${watcher.expression}"`);
}
}
return function unwatchFn () {
watcher.teardown();
}
};
}
/* */
let uid$3 = 0;
function initMixin (Vue) {
Vue.prototype._init = function (options) {
const vm = this;
// a uid
vm._uid = uid$3++;
let startTag, endTag;
/* istanbul ignore if */
if (config.performance && mark) {
startTag = `vue-perf-start:${vm._uid}`;
endTag = `vue-perf-end:${vm._uid}`;
mark(startTag);
}
// a flag to avoid this being observed
vm._isVue = true;
// merge options
if (options && options._isComponent) {
// optimize internal component instantiation
// since dynamic options merging is pretty slow, and none of the
// internal component options needs special treatment.
initInternalComponent(vm, options);
} else {
vm.$options = mergeOptions(
resolveConstructorOptions(vm.constructor),
options || {},
vm
);
}
/* istanbul ignore else */
{
initProxy(vm);
}
// expose real self
vm._self = vm;
initLifecycle(vm);
initEvents(vm);
initRender(vm);
callHook(vm, 'beforeCreate');
initInjections(vm); // resolve injections before data/props
initState(vm);
initProvide(vm); // resolve provide after data/props
callHook(vm, 'created');
/* istanbul ignore if */
if (config.performance && mark) {
vm._name = formatComponentName(vm, false);
mark(endTag);
measure(`vue ${vm._name} init`, startTag, endTag);
}
if (vm.$options.el) {
vm.$mount(vm.$options.el);
}
};
}
function initInternalComponent (vm, options) {
const opts = vm.$options = Object.create(vm.constructor.options);
// doing this because it's faster than dynamic enumeration.
const parentVnode = options._parentVnode;
opts.parent = options.parent;
opts._parentVnode = parentVnode;
const vnodeComponentOptions = parentVnode.componentOptions;
opts.propsData = vnodeComponentOptions.propsData;
opts._parentListeners = vnodeComponentOptions.listeners;
opts._renderChildren = vnodeComponentOptions.children;
opts._componentTag = vnodeComponentOptions.tag;
if (options.render) {
opts.render = options.render;
opts.staticRenderFns = options.staticRenderFns;
}
}
function resolveConstructorOptions (Ctor) {
let options = Ctor.options;
if (Ctor.super) {
const superOptions = resolveConstructorOptions(Ctor.super);
const cachedSuperOptions = Ctor.superOptions;
if (superOptions !== cachedSuperOptions) {
// super option changed,
// need to resolve new options.
Ctor.superOptions = superOptions;
// check if there are any late-modified/attached options (#4976)
const modifiedOptions = resolveModifiedOptions(Ctor);
// update base extend options
if (modifiedOptions) {
extend(Ctor.extendOptions, modifiedOptions);
}
options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
if (options.name) {
options.components[options.name] = Ctor;
}
}
}
return options
}
function resolveModifiedOptions (Ctor) {
let modified;
const latest = Ctor.options;
const sealed = Ctor.sealedOptions;
for (const key in latest) {
if (latest[key] !== sealed[key]) {
if (!modified) modified = {};
modified[key] = latest[key];
}
}
return modified
}
function Vue (options) {
if (!(this instanceof Vue)
) {
warn('Vue is a constructor and should be called with the `new` keyword');
}
this._init(options);
}
initMixin(Vue);
stateMixin(Vue);
eventsMixin(Vue);
lifecycleMixin(Vue);
renderMixin(Vue);
/* */
function initUse (Vue) {
Vue.use = function (plugin) {
const installedPlugins = (this._installedPlugins || (this._installedPlugins = []));
if (installedPlugins.indexOf(plugin) > -1) {
return this
}
// additional parameters
const args = toArray(arguments, 1);
args.unshift(this);
if (typeof plugin.install === 'function') {
plugin.install.apply(plugin, args);
} else if (typeof plugin === 'function') {
plugin.apply(null, args);
}
installedPlugins.push(plugin);
return this
};
}
/* */
function initMixin$1 (Vue) {
Vue.mixin = function (mixin) {
this.options = mergeOptions(this.options, mixin);
return this
};
}
/* */
function initExtend (Vue) {
/**
* Each instance constructor, including Vue, has a unique
* cid. This enables us to create wrapped "child
* constructors" for prototypal inheritance and cache them.
*/
Vue.cid = 0;
let cid = 1;
/**
* Class inheritance
*/
Vue.extend = function (extendOptions) {
extendOptions = extendOptions || {};
const Super = this;
const SuperId = Super.cid;
const cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
if (cachedCtors[SuperId]) {
return cachedCtors[SuperId]
}
const name = extendOptions.name || Super.options.name;
if (name) {
validateComponentName(name);
}
const Sub = function VueComponent (options) {
this._init(options);
};
Sub.prototype = Object.create(Super.prototype);
Sub.prototype.constructor = Sub;
Sub.cid = cid++;
Sub.options = mergeOptions(
Super.options,
extendOptions
);
Sub['super'] = Super;
// For props and computed properties, we define the proxy getters on
// the Vue instances at extension time, on the extended prototype. This
// avoids Object.defineProperty calls for each instance created.
if (Sub.options.props) {
initProps$1(Sub);
}
if (Sub.options.computed) {
initComputed$1(Sub);
}
// allow further extension/mixin/plugin usage
Sub.extend = Super.extend;
Sub.mixin = Super.mixin;
Sub.use = Super.use;
// create asset registers, so extended classes
// can have their private assets too.
ASSET_TYPES.forEach(function (type) {
Sub[type] = Super[type];
});
// enable recursive self-lookup
if (name) {
Sub.options.components[name] = Sub;
}
// keep a reference to the super options at extension time.
// later at instantiation we can check if Super's options have
// been updated.
Sub.superOptions = Super.options;
Sub.extendOptions = extendOptions;
Sub.sealedOptions = extend({}, Sub.options);
// cache constructor
cachedCtors[SuperId] = Sub;
return Sub
};
}
function initProps$1 (Comp) {
const props = Comp.options.props;
for (const key in props) {
proxy(Comp.prototype, `_props`, key);
}
}
function initComputed$1 (Comp) {
const computed = Comp.options.computed;
for (const key in computed) {
defineComputed(Comp.prototype, key, computed[key]);
}
}
/* */
function initAssetRegisters (Vue) {
/**
* Create asset registration methods.
*/
ASSET_TYPES.forEach(type => {
Vue[type] = function (
id,
definition
) {
if (!definition) {
return this.options[type + 's'][id]
} else {
/* istanbul ignore if */
if (type === 'component') {
validateComponentName(id);
}
if (type === 'component' && isPlainObject(definition)) {
definition.name = definition.name || id;
definition = this.options._base.extend(definition);
}
if (type === 'directive' && typeof definition === 'function') {
definition = { bind: definition, update: definition };
}
this.options[type + 's'][id] = definition;
return definition
}
};
});
}
/* */
function getComponentName (opts) {
return opts && (opts.Ctor.options.name || opts.tag)
}
function matches (pattern, name) {
if (Array.isArray(pattern)) {
return pattern.indexOf(name) > -1
} else if (typeof pattern === 'string') {
return pattern.split(',').indexOf(name) > -1
} else if (isRegExp(pattern)) {
return pattern.test(name)
}
/* istanbul ignore next */
return false
}
function pruneCache (keepAliveInstance, filter) {
const { cache, keys, _vnode } = keepAliveInstance;
for (const key in cache) {
const cachedNode = cache[key];
if (cachedNode) {
const name = getComponentName(cachedNode.componentOptions);
if (name && !filter(name)) {
pruneCacheEntry(cache, key, keys, _vnode);
}
}
}
}
function pruneCacheEntry (
cache,
key,
keys,
current
) {
const cached$$1 = cache[key];
if (cached$$1 && (!current || cached$$1.tag !== current.tag)) {
cached$$1.componentInstance.$destroy();
}
cache[key] = null;
remove(keys, key);
}
const patternTypes = [String, RegExp, Array];
var KeepAlive = {
name: 'keep-alive',
abstract: true,
props: {
include: patternTypes,
exclude: patternTypes,
max: [String, Number]
},
created () {
this.cache = Object.create(null);
this.keys = [];
},
destroyed () {
for (const key in this.cache) {
pruneCacheEntry(this.cache, key, this.keys);
}
},
mounted () {
this.$watch('include', val => {
pruneCache(this, name => matches(val, name));
});
this.$watch('exclude', val => {
pruneCache(this, name => !matches(val, name));
});
},
render () {
const slot = this.$slots.default;
const vnode = getFirstComponentChild(slot);
const componentOptions = vnode && vnode.componentOptions;
if (componentOptions) {
// check pattern
const name = getComponentName(componentOptions);
const { include, exclude } = this;
if (
// not included
(include && (!name || !matches(include, name))) ||
// excluded
(exclude && name && matches(exclude, name))
) {
return vnode
}
const { cache, keys } = this;
const key = vnode.key == null
// same constructor may get registered as different local components
// so cid alone is not enough (#3269)
? componentOptions.Ctor.cid + (componentOptions.tag ? `::${componentOptions.tag}` : '')
: vnode.key;
if (cache[key]) {
vnode.componentInstance = cache[key].componentInstance;
// make current key freshest
remove(keys, key);
keys.push(key);
} else {
cache[key] = vnode;
keys.push(key);
// prune oldest entry
if (this.max && keys.length > parseInt(this.max)) {
pruneCacheEntry(cache, keys[0], keys, this._vnode);
}
}
vnode.data.keepAlive = true;
}
return vnode || (slot && slot[0])
}
};
var builtInComponents = {
KeepAlive
};
/* */
function initGlobalAPI (Vue) {
// config
const configDef = {};
configDef.get = () => config;
{
configDef.set = () => {
warn(
'Do not replace the Vue.config object, set individual fields instead.'
);
};
}
Object.defineProperty(Vue, 'config', configDef);
// exposed util methods.
// NOTE: these are not considered part of the public API - avoid relying on
// them unless you are aware of the risk.
Vue.util = {
warn,
extend,
mergeOptions,
defineReactive: defineReactive$$1
};
Vue.set = set;
Vue.delete = del;
Vue.nextTick = nextTick;
// 2.6 explicit observable API
Vue.observable = (obj) => {
observe(obj);
return obj
};
Vue.options = Object.create(null);
ASSET_TYPES.forEach(type => {
Vue.options[type + 's'] = Object.create(null);
});
// this is used to identify the "base" constructor to extend all plain-object
// components with in Weex's multi-instance scenarios.
Vue.options._base = Vue;
extend(Vue.options.components, builtInComponents);
initUse(Vue);
initMixin$1(Vue);
initExtend(Vue);
initAssetRegisters(Vue);
}
initGlobalAPI(Vue);
Object.defineProperty(Vue.prototype, '$isServer', {
get: isServerRendering
});
Object.defineProperty(Vue.prototype, '$ssrContext', {
get () {
/* istanbul ignore next */
return this.$vnode && this.$vnode.ssrContext
}
});
// expose FunctionalRenderContext for ssr runtime helper installation
Object.defineProperty(Vue, 'FunctionalRenderContext', {
value: FunctionalRenderContext
});
Vue.version = '2.6.11';
/* */
// these are reserved for web because they are directly compiled away
// during template compilation
const isReservedAttr = makeMap('style,class');
// attributes that should be using props for binding
const acceptValue = makeMap('input,textarea,option,select,progress');
const mustUseProp = (tag, type, attr) => {
return (
(attr === 'value' && acceptValue(tag)) && type !== 'button' ||
(attr === 'selected' && tag === 'option') ||
(attr === 'checked' && tag === 'input') ||
(attr === 'muted' && tag === 'video')
)
};
const isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');
const isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');
const convertEnumeratedValue = (key, value) => {
return isFalsyAttrValue(value) || value === 'false'
? 'false'
// allow arbitrary string value for contenteditable
: key === 'contenteditable' && isValidContentEditableValue(value)
? value
: 'true'
};
const isBooleanAttr = makeMap(
'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
'required,reversed,scoped,seamless,selected,sortable,translate,' +
'truespeed,typemustmatch,visible'
);
const xlinkNS = 'http://www.w3.org/1999/xlink';
const isXlink = (name) => {
return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
};
const getXlinkProp = (name) => {
return isXlink(name) ? name.slice(6, name.length) : ''
};
const isFalsyAttrValue = (val) => {
return val == null || val === false
};
/* */
function genClassForVnode (vnode) {
let data = vnode.data;
let parentNode = vnode;
let childNode = vnode;
while (isDef(childNode.componentInstance)) {
childNode = childNode.componentInstance._vnode;
if (childNode && childNode.data) {
data = mergeClassData(childNode.data, data);
}
}
while (isDef(parentNode = parentNode.parent)) {
if (parentNode && parentNode.data) {
data = mergeClassData(data, parentNode.data);
}
}
return renderClass(data.staticClass, data.class)
}
function mergeClassData (child, parent) {
return {
staticClass: concat(child.staticClass, parent.staticClass),
class: isDef(child.class)
? [child.class, parent.class]
: parent.class
}
}
function renderClass (
staticClass,
dynamicClass
) {
if (isDef(staticClass) || isDef(dynamicClass)) {
return concat(staticClass, stringifyClass(dynamicClass))
}
/* istanbul ignore next */
return ''
}
function concat (a, b) {
return a ? b ? (a + ' ' + b) : a : (b || '')
}
function stringifyClass (value) {
if (Array.isArray(value)) {
return stringifyArray(value)
}
if (isObject(value)) {
return stringifyObject(value)
}
if (typeof value === 'string') {
return value
}
/* istanbul ignore next */
return ''
}
function stringifyArray (value) {
let res = '';
let stringified;
for (let i = 0, l = value.length; i < l; i++) {
if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
if (res) res += ' ';
res += stringified;
}
}
return res
}
function stringifyObject (value) {
let res = '';
for (const key in value) {
if (value[key]) {
if (res) res += ' ';
res += key;
}
}
return res
}
/* */
const namespaceMap = {
svg: 'http://www.w3.org/2000/svg',
math: 'http://www.w3.org/1998/Math/MathML'
};
const isHTMLTag = makeMap(
'html,body,base,head,link,meta,style,title,' +
'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
'embed,object,param,source,canvas,script,noscript,del,ins,' +
'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
'output,progress,select,textarea,' +
'details,dialog,menu,menuitem,summary,' +
'content,element,shadow,template,blockquote,iframe,tfoot'
);
// this map is intentionally selective, only covering SVG elements that may
// contain child elements.
const isSVG = makeMap(
'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
true
);
const isPreTag = (tag) => tag === 'pre';
const isReservedTag = (tag) => {
return isHTMLTag(tag) || isSVG(tag)
};
function getTagNamespace (tag) {
if (isSVG(tag)) {
return 'svg'
}
// basic support for MathML
// note it doesn't support other MathML elements being component roots
if (tag === 'math') {
return 'math'
}
}
const unknownElementCache = Object.create(null);
function isUnknownElement (tag) {
/* istanbul ignore if */
if (!inBrowser) {
return true
}
if (isReservedTag(tag)) {
return false
}
tag = tag.toLowerCase();
/* istanbul ignore if */
if (unknownElementCache[tag] != null) {
return unknownElementCache[tag]
}
const el = document.createElement(tag);
if (tag.indexOf('-') > -1) {
// http://stackoverflow.com/a/28210364/1070244
return (unknownElementCache[tag] = (
el.constructor === window.HTMLUnknownElement ||
el.constructor === window.HTMLElement
))
} else {
return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
}
}
const isTextInputType = makeMap('text,number,password,search,email,tel,url');
/* */
/**
* Query an element selector if it's not an element already.
*/
function query (el) {
if (typeof el === 'string') {
const selected = document.querySelector(el);
if (!selected) {
warn(
'Cannot find element: ' + el
);
return document.createElement('div')
}
return selected
} else {
return el
}
}
/* */
function createElement$1 (tagName, vnode) {
const elm = document.createElement(tagName);
if (tagName !== 'select') {
return elm
}
// false or null will remove the attribute but undefined will not
if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
elm.setAttribute('multiple', 'multiple');
}
return elm
}
function createElementNS (namespace, tagName) {
return document.createElementNS(namespaceMap[namespace], tagName)
}
function createTextNode (text) {
return document.createTextNode(text)
}
function createComment (text) {
return document.createComment(text)
}
function insertBefore (parentNode, newNode, referenceNode) {
parentNode.insertBefore(newNode, referenceNode);
}
function removeChild (node, child) {
node.removeChild(child);
}
function appendChild (node, child) {
node.appendChild(child);
}
function parentNode (node) {
return node.parentNode
}
function nextSibling (node) {
return node.nextSibling
}
function tagName (node) {
return node.tagName
}
function setTextContent (node, text) {
node.textContent = text;
}
function setStyleScope (node, scopeId) {
node.setAttribute(scopeId, '');
}
var nodeOps = /*#__PURE__*/Object.freeze({
createElement: createElement$1,
createElementNS: createElementNS,
createTextNode: createTextNode,
createComment: createComment,
insertBefore: insertBefore,
removeChild: removeChild,
appendChild: appendChild,
parentNode: parentNode,
nextSibling: nextSibling,
tagName: tagName,
setTextContent: setTextContent,
setStyleScope: setStyleScope
});
/* */
var ref = {
create (_, vnode) {
registerRef(vnode);
},
update (oldVnode, vnode) {
if (oldVnode.data.ref !== vnode.data.ref) {
registerRef(oldVnode, true);
registerRef(vnode);
}
},
destroy (vnode) {
registerRef(vnode, true);
}
};
function registerRef (vnode, isRemoval) {
const key = vnode.data.ref;
if (!isDef(key)) return
const vm = vnode.context;
const ref = vnode.componentInstance || vnode.elm;
const refs = vm.$refs;
if (isRemoval) {
if (Array.isArray(refs[key])) {
remove(refs[key], ref);
} else if (refs[key] === ref) {
refs[key] = undefined;
}
} else {
if (vnode.data.refInFor) {
if (!Array.isArray(refs[key])) {
refs[key] = [ref];
} else if (refs[key].indexOf(ref) < 0) {
// $flow-disable-line
refs[key].push(ref);
}
} else {
refs[key] = ref;
}
}
}
/**
* Virtual DOM patching algorithm based on Snabbdom by
* Simon Friis Vindum (@paldepind)
* Licensed under the MIT License
* https://github.com/paldepind/snabbdom/blob/master/LICENSE
*
* modified by Evan You (@yyx990803)
*
* Not type-checking this because this file is perf-critical and the cost
* of making flow understand it is not worth it.
*/
const emptyNode = new VNode('', {}, []);
const hooks = ['create', 'activate', 'update', 'remove', 'destroy'];
function sameVnode (a, b) {
return (
a.key === b.key && (
(
a.tag === b.tag &&
a.isComment === b.isComment &&
isDef(a.data) === isDef(b.data) &&
sameInputType(a, b)
) || (
isTrue(a.isAsyncPlaceholder) &&
a.asyncFactory === b.asyncFactory &&
isUndef(b.asyncFactory.error)
)
)
)
}
function sameInputType (a, b) {
if (a.tag !== 'input') return true
let i;
const typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
const typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
}
function createKeyToOldIdx (children, beginIdx, endIdx) {
let i, key;
const map = {};
for (i = beginIdx; i <= endIdx; ++i) {
key = children[i].key;
if (isDef(key)) map[key] = i;
}
return map
}
function createPatchFunction (backend) {
let i, j;
const cbs = {};
const { modules, nodeOps } = backend;
for (i = 0; i < hooks.length; ++i) {
cbs[hooks[i]] = [];
for (j = 0; j < modules.length; ++j) {
if (isDef(modules[j][hooks[i]])) {
cbs[hooks[i]].push(modules[j][hooks[i]]);
}
}
}
function emptyNodeAt (elm) {
return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
}
function createRmCb (childElm, listeners) {
function remove$$1 () {
if (--remove$$1.listeners === 0) {
removeNode(childElm);
}
}
remove$$1.listeners = listeners;
return remove$$1
}
function removeNode (el) {
const parent = nodeOps.parentNode(el);
// element may have already been removed due to v-html / v-text
if (isDef(parent)) {
nodeOps.removeChild(parent, el);
}
}
function isUnknownElement$$1 (vnode, inVPre) {
return (
!inVPre &&
!vnode.ns &&
!(
config.ignoredElements.length &&
config.ignoredElements.some(ignore => {
return isRegExp(ignore)
? ignore.test(vnode.tag)
: ignore === vnode.tag
})
) &&
config.isUnknownElement(vnode.tag)
)
}
let creatingElmInVPre = 0;
function createElm (
vnode,
insertedVnodeQueue,
parentElm,
refElm,
nested,
ownerArray,
index
) {
if (isDef(vnode.elm) && isDef(ownerArray)) {
// This vnode was used in a previous render!
// now it's used as a new node, overwriting its elm would cause
// potential patch errors down the road when it's used as an insertion
// reference node. Instead, we clone the node on-demand before creating
// associated DOM element for it.
vnode = ownerArray[index] = cloneVNode(vnode);
}
vnode.isRootInsert = !nested; // for transition enter check
if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
return
}
const data = vnode.data;
const children = vnode.children;
const tag = vnode.tag;
if (isDef(tag)) {
{
if (data && data.pre) {
creatingElmInVPre++;
}
if (isUnknownElement$$1(vnode, creatingElmInVPre)) {
warn(
'Unknown custom element: <' + tag + '> - did you ' +
'register the component correctly? For recursive components, ' +
'make sure to provide the "name" option.',
vnode.context
);
}
}
vnode.elm = vnode.ns
? nodeOps.createElementNS(vnode.ns, tag)
: nodeOps.createElement(tag, vnode);
setScope(vnode);
/* istanbul ignore if */
{
createChildren(vnode, children, insertedVnodeQueue);
if (isDef(data)) {
invokeCreateHooks(vnode, insertedVnodeQueue);
}
insert(parentElm, vnode.elm, refElm);
}
if (data && data.pre) {
creatingElmInVPre--;
}
} else if (isTrue(vnode.isComment)) {
vnode.elm = nodeOps.createComment(vnode.text);
insert(parentElm, vnode.elm, refElm);
} else {
vnode.elm = nodeOps.createTextNode(vnode.text);
insert(parentElm, vnode.elm, refElm);
}
}
function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
let i = vnode.data;
if (isDef(i)) {
const isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
if (isDef(i = i.hook) && isDef(i = i.init)) {
i(vnode, false /* hydrating */);
}
// after calling the init hook, if the vnode is a child component
// it should've created a child instance and mounted it. the child
// component also has set the placeholder vnode's elm.
// in that case we can just return the element and be done.
if (isDef(vnode.componentInstance)) {
initComponent(vnode, insertedVnodeQueue);
insert(parentElm, vnode.elm, refElm);
if (isTrue(isReactivated)) {
reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
}
return true
}
}
}
function initComponent (vnode, insertedVnodeQueue) {
if (isDef(vnode.data.pendingInsert)) {
insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
vnode.data.pendingInsert = null;
}
vnode.elm = vnode.componentInstance.$el;
if (isPatchable(vnode)) {
invokeCreateHooks(vnode, insertedVnodeQueue);
setScope(vnode);
} else {
// empty component root.
// skip all element-related modules except for ref (#3455)
registerRef(vnode);
// make sure to invoke the insert hook
insertedVnodeQueue.push(vnode);
}
}
function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
let i;
// hack for #4339: a reactivated component with inner transition
// does not trigger because the inner node's created hooks are not called
// again. It's not ideal to involve module-specific logic in here but
// there doesn't seem to be a better way to do it.
let innerNode = vnode;
while (innerNode.componentInstance) {
innerNode = innerNode.componentInstance._vnode;
if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
for (i = 0; i < cbs.activate.length; ++i) {
cbs.activate[i](emptyNode, innerNode);
}
insertedVnodeQueue.push(innerNode);
break
}
}
// unlike a newly created component,
// a reactivated keep-alive component doesn't insert itself
insert(parentElm, vnode.elm, refElm);
}
function insert (parent, elm, ref$$1) {
if (isDef(parent)) {
if (isDef(ref$$1)) {
if (nodeOps.parentNode(ref$$1) === parent) {
nodeOps.insertBefore(parent, elm, ref$$1);
}
} else {
nodeOps.appendChild(parent, elm);
}
}
}
function createChildren (vnode, children, insertedVnodeQueue) {
if (Array.isArray(children)) {
{
checkDuplicateKeys(children);
}
for (let i = 0; i < children.length; ++i) {
createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
}
} else if (isPrimitive(vnode.text)) {
nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
}
}
function isPatchable (vnode) {
while (vnode.componentInstance) {
vnode = vnode.componentInstance._vnode;
}
return isDef(vnode.tag)
}
function invokeCreateHooks (vnode, insertedVnodeQueue) {
for (let i = 0; i < cbs.create.length; ++i) {
cbs.create[i](emptyNode, vnode);
}
i = vnode.data.hook; // Reuse variable
if (isDef(i)) {
if (isDef(i.create)) i.create(emptyNode, vnode);
if (isDef(i.insert)) insertedVnodeQueue.push(vnode);
}
}
// set scope id attribute for scoped CSS.
// this is implemented as a special case to avoid the overhead
// of going through the normal attribute patching process.
function setScope (vnode) {
let i;
if (isDef(i = vnode.fnScopeId)) {
nodeOps.setStyleScope(vnode.elm, i);
} else {
let ancestor = vnode;
while (ancestor) {
if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
nodeOps.setStyleScope(vnode.elm, i);
}
ancestor = ancestor.parent;
}
}
// for slot content they should also get the scopeId from the host instance.
if (isDef(i = activeInstance) &&
i !== vnode.context &&
i !== vnode.fnContext &&
isDef(i = i.$options._scopeId)
) {
nodeOps.setStyleScope(vnode.elm, i);
}
}
function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
for (; startIdx <= endIdx; ++startIdx) {
createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
}
}
function invokeDestroyHook (vnode) {
let i, j;
const data = vnode.data;
if (isDef(data)) {
if (isDef(i = data.hook) && isDef(i = i.destroy)) i(vnode);
for (i = 0; i < cbs.destroy.length; ++i) cbs.destroy[i](vnode);
}
if (isDef(i = vnode.children)) {
for (j = 0; j < vnode.children.length; ++j) {
invokeDestroyHook(vnode.children[j]);
}
}
}
function removeVnodes (vnodes, startIdx, endIdx) {
for (; startIdx <= endIdx; ++startIdx) {
const ch = vnodes[startIdx];
if (isDef(ch)) {
if (isDef(ch.tag)) {
removeAndInvokeRemoveHook(ch);
invokeDestroyHook(ch);
} else { // Text node
removeNode(ch.elm);
}
}
}
}
function removeAndInvokeRemoveHook (vnode, rm) {
if (isDef(rm) || isDef(vnode.data)) {
let i;
const listeners = cbs.remove.length + 1;
if (isDef(rm)) {
// we have a recursively passed down rm callback
// increase the listeners count
rm.listeners += listeners;
} else {
// directly removing
rm = createRmCb(vnode.elm, listeners);
}
// recursively invoke hooks on child component root node
if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
removeAndInvokeRemoveHook(i, rm);
}
for (i = 0; i < cbs.remove.length; ++i) {
cbs.remove[i](vnode, rm);
}
if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
i(vnode, rm);
} else {
rm();
}
} else {
removeNode(vnode.elm);
}
}
function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
let oldStartIdx = 0;
let newStartIdx = 0;
let oldEndIdx = oldCh.length - 1;
let oldStartVnode = oldCh[0];
let oldEndVnode = oldCh[oldEndIdx];
let newEndIdx = newCh.length - 1;
let newStartVnode = newCh[0];
let newEndVnode = newCh[newEndIdx];
let oldKeyToIdx, idxInOld, vnodeToMove, refElm;
// removeOnly is a special flag used only by <transition-group>
// to ensure removed elements stay in correct relative positions
// during leaving transitions
const canMove = !removeOnly;
{
checkDuplicateKeys(newCh);
}
while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
if (isUndef(oldStartVnode)) {
oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
} else if (isUndef(oldEndVnode)) {
oldEndVnode = oldCh[--oldEndIdx];
} else if (sameVnode(oldStartVnode, newStartVnode)) {
patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
oldStartVnode = oldCh[++oldStartIdx];
newStartVnode = newCh[++newStartIdx];
} else if (sameVnode(oldEndVnode, newEndVnode)) {
patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
oldEndVnode = oldCh[--oldEndIdx];
newEndVnode = newCh[--newEndIdx];
} else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
oldStartVnode = oldCh[++oldStartIdx];
newEndVnode = newCh[--newEndIdx];
} else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
oldEndVnode = oldCh[--oldEndIdx];
newStartVnode = newCh[++newStartIdx];
} else {
if (isUndef(oldKeyToIdx)) oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx);
idxInOld = isDef(newStartVnode.key)
? oldKeyToIdx[newStartVnode.key]
: findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
if (isUndef(idxInOld)) { // New element
createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
} else {
vnodeToMove = oldCh[idxInOld];
if (sameVnode(vnodeToMove, newStartVnode)) {
patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
oldCh[idxInOld] = undefined;
canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
} else {
// same key but different element. treat as new element
createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
}
}
newStartVnode = newCh[++newStartIdx];
}
}
if (oldStartIdx > oldEndIdx) {
refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
} else if (newStartIdx > newEndIdx) {
removeVnodes(oldCh, oldStartIdx, oldEndIdx);
}
}
function checkDuplicateKeys (children) {
const seenKeys = {};
for (let i = 0; i < children.length; i++) {
const vnode = children[i];
const key = vnode.key;
if (isDef(key)) {
if (seenKeys[key]) {
warn(
`Duplicate keys detected: '${key}'. This may cause an update error.`,
vnode.context
);
} else {
seenKeys[key] = true;
}
}
}
}
function findIdxInOld (node, oldCh, start, end) {
for (let i = start; i < end; i++) {
const c = oldCh[i];
if (isDef(c) && sameVnode(node, c)) return i
}
}
function patchVnode (
oldVnode,
vnode,
insertedVnodeQueue,
ownerArray,
index,
removeOnly
) {
if (oldVnode === vnode) {
return
}
if (isDef(vnode.elm) && isDef(ownerArray)) {
// clone reused vnode
vnode = ownerArray[index] = cloneVNode(vnode);
}
const elm = vnode.elm = oldVnode.elm;
if (isTrue(oldVnode.isAsyncPlaceholder)) {
if (isDef(vnode.asyncFactory.resolved)) {
hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
} else {
vnode.isAsyncPlaceholder = true;
}
return
}
// reuse element for static trees.
// note we only do this if the vnode is cloned -
// if the new node is not cloned it means the render functions have been
// reset by the hot-reload-api and we need to do a proper re-render.
if (isTrue(vnode.isStatic) &&
isTrue(oldVnode.isStatic) &&
vnode.key === oldVnode.key &&
(isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
) {
vnode.componentInstance = oldVnode.componentInstance;
return
}
let i;
const data = vnode.data;
if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
i(oldVnode, vnode);
}
const oldCh = oldVnode.children;
const ch = vnode.children;
if (isDef(data) && isPatchable(vnode)) {
for (i = 0; i < cbs.update.length; ++i) cbs.update[i](oldVnode, vnode);
if (isDef(i = data.hook) && isDef(i = i.update)) i(oldVnode, vnode);
}
if (isUndef(vnode.text)) {
if (isDef(oldCh) && isDef(ch)) {
if (oldCh !== ch) updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly);
} else if (isDef(ch)) {
{
checkDuplicateKeys(ch);
}
if (isDef(oldVnode.text)) nodeOps.setTextContent(elm, '');
addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
} else if (isDef(oldCh)) {
removeVnodes(oldCh, 0, oldCh.length - 1);
} else if (isDef(oldVnode.text)) {
nodeOps.setTextContent(elm, '');
}
} else if (oldVnode.text !== vnode.text) {
nodeOps.setTextContent(elm, vnode.text);
}
if (isDef(data)) {
if (isDef(i = data.hook) && isDef(i = i.postpatch)) i(oldVnode, vnode);
}
}
function invokeInsertHook (vnode, queue, initial) {
// delay insert hooks for component root nodes, invoke them after the
// element is really inserted
if (isTrue(initial) && isDef(vnode.parent)) {
vnode.parent.data.pendingInsert = queue;
} else {
for (let i = 0; i < queue.length; ++i) {
queue[i].data.hook.insert(queue[i]);
}
}
}
let hydrationBailed = false;
// list of modules that can skip create hook during hydration because they
// are already rendered on the client or has no need for initialization
// Note: style is excluded because it relies on initial clone for future
// deep updates (#7063).
const isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');
// Note: this is a browser-only function so we can assume elms are DOM nodes.
function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {
let i;
const { tag, data, children } = vnode;
inVPre = inVPre || (data && data.pre);
vnode.elm = elm;
if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
vnode.isAsyncPlaceholder = true;
return true
}
// assert node match
{
if (!assertNodeMatch(elm, vnode, inVPre)) {
return false
}
}
if (isDef(data)) {
if (isDef(i = data.hook) && isDef(i = i.init)) i(vnode, true /* hydrating */);
if (isDef(i = vnode.componentInstance)) {
// child component. it should have hydrated its own tree.
initComponent(vnode, insertedVnodeQueue);
return true
}
}
if (isDef(tag)) {
if (isDef(children)) {
// empty element, allow client to pick up and populate children
if (!elm.hasChildNodes()) {
createChildren(vnode, children, insertedVnodeQueue);
} else {
// v-html and domProps: innerHTML
if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
if (i !== elm.innerHTML) {
/* istanbul ignore if */
if (typeof console !== 'undefined' &&
!hydrationBailed
) {
hydrationBailed = true;
console.warn('Parent: ', elm);
console.warn('server innerHTML: ', i);
console.warn('client innerHTML: ', elm.innerHTML);
}
return false
}
} else {
// iterate and compare children lists
let childrenMatch = true;
let childNode = elm.firstChild;
for (let i = 0; i < children.length; i++) {
if (!childNode || !hydrate(childNode, children[i], insertedVnodeQueue, inVPre)) {
childrenMatch = false;
break
}
childNode = childNode.nextSibling;
}
// if childNode is not null, it means the actual childNodes list is
// longer than the virtual children list.
if (!childrenMatch || childNode) {
/* istanbul ignore if */
if (typeof console !== 'undefined' &&
!hydrationBailed
) {
hydrationBailed = true;
console.warn('Parent: ', elm);
console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
}
return false
}
}
}
}
if (isDef(data)) {
let fullInvoke = false;
for (const key in data) {
if (!isRenderedModule(key)) {
fullInvoke = true;
invokeCreateHooks(vnode, insertedVnodeQueue);
break
}
}
if (!fullInvoke && data['class']) {
// ensure collecting deps for deep class bindings for future updates
traverse(data['class']);
}
}
} else if (elm.data !== vnode.text) {
elm.data = vnode.text;
}
return true
}
function assertNodeMatch (node, vnode, inVPre) {
if (isDef(vnode.tag)) {
return vnode.tag.indexOf('vue-component') === 0 || (
!isUnknownElement$$1(vnode, inVPre) &&
vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
)
} else {
return node.nodeType === (vnode.isComment ? 8 : 3)
}
}
return function patch (oldVnode, vnode, hydrating, removeOnly) {
if (isUndef(vnode)) {
if (isDef(oldVnode)) invokeDestroyHook(oldVnode);
return
}
let isInitialPatch = false;
const insertedVnodeQueue = [];
if (isUndef(oldVnode)) {
// empty mount (likely as component), create new root element
isInitialPatch = true;
createElm(vnode, insertedVnodeQueue);
} else {
const isRealElement = isDef(oldVnode.nodeType);
if (!isRealElement && sameVnode(oldVnode, vnode)) {
// patch existing root node
patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);
} else {
if (isRealElement) {
// mounting to a real element
// check if this is server-rendered content and if we can perform
// a successful hydration.
if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
oldVnode.removeAttribute(SSR_ATTR);
hydrating = true;
}
if (isTrue(hydrating)) {
if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
invokeInsertHook(vnode, insertedVnodeQueue, true);
return oldVnode
} else {
warn(
'The client-side rendered virtual DOM tree is not matching ' +
'server-rendered content. This is likely caused by incorrect ' +
'HTML markup, for example nesting block-level elements inside ' +
'<p>, or missing <tbody>. Bailing hydration and performing ' +
'full client-side render.'
);
}
}
// either not server-rendered, or hydration failed.
// create an empty node and replace it
oldVnode = emptyNodeAt(oldVnode);
}
// replacing existing element
const oldElm = oldVnode.elm;
const parentElm = nodeOps.parentNode(oldElm);
// create new node
createElm(
vnode,
insertedVnodeQueue,
// extremely rare edge case: do not insert if old element is in a
// leaving transition. Only happens when combining transition +
// keep-alive + HOCs. (#4590)
oldElm._leaveCb ? null : parentElm,
nodeOps.nextSibling(oldElm)
);
// update parent placeholder node element, recursively
if (isDef(vnode.parent)) {
let ancestor = vnode.parent;
const patchable = isPatchable(vnode);
while (ancestor) {
for (let i = 0; i < cbs.destroy.length; ++i) {
cbs.destroy[i](ancestor);
}
ancestor.elm = vnode.elm;
if (patchable) {
for (let i = 0; i < cbs.create.length; ++i) {
cbs.create[i](emptyNode, ancestor);
}
// #6513
// invoke insert hooks that may have been merged by create hooks.
// e.g. for directives that uses the "inserted" hook.
const insert = ancestor.data.hook.insert;
if (insert.merged) {
// start at index 1 to avoid re-invoking component mounted hook
for (let i = 1; i < insert.fns.length; i++) {
insert.fns[i]();
}
}
} else {
registerRef(ancestor);
}
ancestor = ancestor.parent;
}
}
// destroy old node
if (isDef(parentElm)) {
removeVnodes([oldVnode], 0, 0);
} else if (isDef(oldVnode.tag)) {
invokeDestroyHook(oldVnode);
}
}
}
invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
return vnode.elm
}
}
/* */
var directives = {
create: updateDirectives,
update: updateDirectives,
destroy: function unbindDirectives (vnode) {
updateDirectives(vnode, emptyNode);
}
};
function updateDirectives (oldVnode, vnode) {
if (oldVnode.data.directives || vnode.data.directives) {
_update(oldVnode, vnode);
}
}
function _update (oldVnode, vnode) {
const isCreate = oldVnode === emptyNode;
const isDestroy = vnode === emptyNode;
const oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
const newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);
const dirsWithInsert = [];
const dirsWithPostpatch = [];
let key, oldDir, dir;
for (key in newDirs) {
oldDir = oldDirs[key];
dir = newDirs[key];
if (!oldDir) {
// new directive, bind
callHook$1(dir, 'bind', vnode, oldVnode);
if (dir.def && dir.def.inserted) {
dirsWithInsert.push(dir);
}
} else {
// existing directive, update
dir.oldValue = oldDir.value;
dir.oldArg = oldDir.arg;
callHook$1(dir, 'update', vnode, oldVnode);
if (dir.def && dir.def.componentUpdated) {
dirsWithPostpatch.push(dir);
}
}
}
if (dirsWithInsert.length) {
const callInsert = () => {
for (let i = 0; i < dirsWithInsert.length; i++) {
callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
}
};
if (isCreate) {
mergeVNodeHook(vnode, 'insert', callInsert);
} else {
callInsert();
}
}
if (dirsWithPostpatch.length) {
mergeVNodeHook(vnode, 'postpatch', () => {
for (let i = 0; i < dirsWithPostpatch.length; i++) {
callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
}
});
}
if (!isCreate) {
for (key in oldDirs) {
if (!newDirs[key]) {
// no longer present, unbind
callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
}
}
}
}
const emptyModifiers = Object.create(null);
function normalizeDirectives$1 (
dirs,
vm
) {
const res = Object.create(null);
if (!dirs) {
// $flow-disable-line
return res
}
let i, dir;
for (i = 0; i < dirs.length; i++) {
dir = dirs[i];
if (!dir.modifiers) {
// $flow-disable-line
dir.modifiers = emptyModifiers;
}
res[getRawDirName(dir)] = dir;
dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
}
// $flow-disable-line
return res
}
function getRawDirName (dir) {
return dir.rawName || `${dir.name}.${Object.keys(dir.modifiers || {}).join('.')}`
}
function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
const fn = dir.def && dir.def[hook];
if (fn) {
try {
fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
} catch (e) {
handleError(e, vnode.context, `directive ${dir.name} ${hook} hook`);
}
}
}
var baseModules = [
ref,
directives
];
/* */
function updateAttrs (oldVnode, vnode) {
const opts = vnode.componentOptions;
if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
return
}
if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
return
}
let key, cur, old;
const elm = vnode.elm;
const oldAttrs = oldVnode.data.attrs || {};
let attrs = vnode.data.attrs || {};
// clone observed objects, as the user probably wants to mutate it
if (isDef(attrs.__ob__)) {
attrs = vnode.data.attrs = extend({}, attrs);
}
for (key in attrs) {
cur = attrs[key];
old = oldAttrs[key];
if (old !== cur) {
setAttr(elm, key, cur);
}
}
// #4391: in IE9, setting type can reset value for input[type=radio]
// #6666: IE/Edge forces progress value down to 1 before setting a max
/* istanbul ignore if */
if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
setAttr(elm, 'value', attrs.value);
}
for (key in oldAttrs) {
if (isUndef(attrs[key])) {
if (isXlink(key)) {
elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
} else if (!isEnumeratedAttr(key)) {
elm.removeAttribute(key);
}
}
}
}
function setAttr (el, key, value) {
if (el.tagName.indexOf('-') > -1) {
baseSetAttr(el, key, value);
} else if (isBooleanAttr(key)) {
// set attribute for blank value
// e.g. <option disabled>Select one</option>
if (isFalsyAttrValue(value)) {
el.removeAttribute(key);
} else {
// technically allowfullscreen is a boolean attribute for <iframe>,
// but Flash expects a value of "true" when used on <embed> tag
value = key === 'allowfullscreen' && el.tagName === 'EMBED'
? 'true'
: key;
el.setAttribute(key, value);
}
} else if (isEnumeratedAttr(key)) {
el.setAttribute(key, convertEnumeratedValue(key, value));
} else if (isXlink(key)) {
if (isFalsyAttrValue(value)) {
el.removeAttributeNS(xlinkNS, getXlinkProp(key));
} else {
el.setAttributeNS(xlinkNS, key, value);
}
} else {
baseSetAttr(el, key, value);
}
}
function baseSetAttr (el, key, value) {
if (isFalsyAttrValue(value)) {
el.removeAttribute(key);
} else {
// #7138: IE10 & 11 fires input event when setting placeholder on
// <textarea>... block the first input event and remove the blocker
// immediately.
/* istanbul ignore if */
if (
isIE && !isIE9 &&
el.tagName === 'TEXTAREA' &&
key === 'placeholder' && value !== '' && !el.__ieph
) {
const blocker = e => {
e.stopImmediatePropagation();
el.removeEventListener('input', blocker);
};
el.addEventListener('input', blocker);
// $flow-disable-line
el.__ieph = true; /* IE placeholder patched */
}
el.setAttribute(key, value);
}
}
var attrs = {
create: updateAttrs,
update: updateAttrs
};
/* */
function updateClass (oldVnode, vnode) {
const el = vnode.elm;
const data = vnode.data;
const oldData = oldVnode.data;
if (
isUndef(data.staticClass) &&
isUndef(data.class) && (
isUndef(oldData) || (
isUndef(oldData.staticClass) &&
isUndef(oldData.class)
)
)
) {
return
}
let cls = genClassForVnode(vnode);
// handle transition classes
const transitionClass = el._transitionClasses;
if (isDef(transitionClass)) {
cls = concat(cls, stringifyClass(transitionClass));
}
// set the class
if (cls !== el._prevClass) {
el.setAttribute('class', cls);
el._prevClass = cls;
}
}
var klass = {
create: updateClass,
update: updateClass
};
/* */
const validDivisionCharRE = /[\w).+\-_$\]]/;
function parseFilters (exp) {
let inSingle = false;
let inDouble = false;
let inTemplateString = false;
let inRegex = false;
let curly = 0;
let square = 0;
let paren = 0;
let lastFilterIndex = 0;
let c, prev, i, expression, filters;
for (i = 0; i < exp.length; i++) {
prev = c;
c = exp.charCodeAt(i);
if (inSingle) {
if (c === 0x27 && prev !== 0x5C) inSingle = false;
} else if (inDouble) {
if (c === 0x22 && prev !== 0x5C) inDouble = false;
} else if (inTemplateString) {
if (c === 0x60 && prev !== 0x5C) inTemplateString = false;
} else if (inRegex) {
if (c === 0x2f && prev !== 0x5C) inRegex = false;
} else if (
c === 0x7C && // pipe
exp.charCodeAt(i + 1) !== 0x7C &&
exp.charCodeAt(i - 1) !== 0x7C &&
!curly && !square && !paren
) {
if (expression === undefined) {
// first filter, end of expression
lastFilterIndex = i + 1;
expression = exp.slice(0, i).trim();
} else {
pushFilter();
}
} else {
switch (c) {
case 0x22: inDouble = true; break // "
case 0x27: inSingle = true; break // '
case 0x60: inTemplateString = true; break // `
case 0x28: paren++; break // (
case 0x29: paren--; break // )
case 0x5B: square++; break // [
case 0x5D: square--; break // ]
case 0x7B: curly++; break // {
case 0x7D: curly--; break // }
}
if (c === 0x2f) { // /
let j = i - 1;
let p;
// find first non-whitespace prev char
for (; j >= 0; j--) {
p = exp.charAt(j);
if (p !== ' ') break
}
if (!p || !validDivisionCharRE.test(p)) {
inRegex = true;
}
}
}
}
if (expression === undefined) {
expression = exp.slice(0, i).trim();
} else if (lastFilterIndex !== 0) {
pushFilter();
}
function pushFilter () {
(filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
lastFilterIndex = i + 1;
}
if (filters) {
for (i = 0; i < filters.length; i++) {
expression = wrapFilter(expression, filters[i]);
}
}
return expression
}
function wrapFilter (exp, filter) {
const i = filter.indexOf('(');
if (i < 0) {
// _f: resolveFilter
return `_f("${filter}")(${exp})`
} else {
const name = filter.slice(0, i);
const args = filter.slice(i + 1);
return `_f("${name}")(${exp}${args !== ')' ? ',' + args : args}`
}
}
/* */
/* eslint-disable no-unused-vars */
function baseWarn (msg, range) {
console.error(`[Vue compiler]: ${msg}`);
}
/* eslint-enable no-unused-vars */
function pluckModuleFunction (
modules,
key
) {
return modules
? modules.map(m => m[key]).filter(_ => _)
: []
}
function addProp (el, name, value, range, dynamic) {
(el.props || (el.props = [])).push(rangeSetItem({ name, value, dynamic }, range));
el.plain = false;
}
function addAttr (el, name, value, range, dynamic) {
const attrs = dynamic
? (el.dynamicAttrs || (el.dynamicAttrs = []))
: (el.attrs || (el.attrs = []));
attrs.push(rangeSetItem({ name, value, dynamic }, range));
el.plain = false;
}
// add a raw attr (use this in preTransforms)
function addRawAttr (el, name, value, range) {
el.attrsMap[name] = value;
el.attrsList.push(rangeSetItem({ name, value }, range));
}
function addDirective (
el,
name,
rawName,
value,
arg,
isDynamicArg,
modifiers,
range
) {
(el.directives || (el.directives = [])).push(rangeSetItem({
name,
rawName,
value,
arg,
isDynamicArg,
modifiers
}, range));
el.plain = false;
}
function prependModifierMarker (symbol, name, dynamic) {
return dynamic
? `_p(${name},"${symbol}")`
: symbol + name // mark the event as captured
}
function addHandler (
el,
name,
value,
modifiers,
important,
warn,
range,
dynamic
) {
modifiers = modifiers || emptyObject;
// warn prevent and passive modifier
/* istanbul ignore if */
if (
warn &&
modifiers.prevent && modifiers.passive
) {
warn(
'passive and prevent can\'t be used together. ' +
'Passive handler can\'t prevent default event.',
range
);
}
// normalize click.right and click.middle since they don't actually fire
// this is technically browser-specific, but at least for now browsers are
// the only target envs that have right/middle clicks.
if (modifiers.right) {
if (dynamic) {
name = `(${name})==='click'?'contextmenu':(${name})`;
} else if (name === 'click') {
name = 'contextmenu';
delete modifiers.right;
}
} else if (modifiers.middle) {
if (dynamic) {
name = `(${name})==='click'?'mouseup':(${name})`;
} else if (name === 'click') {
name = 'mouseup';
}
}
// check capture modifier
if (modifiers.capture) {
delete modifiers.capture;
name = prependModifierMarker('!', name, dynamic);
}
if (modifiers.once) {
delete modifiers.once;
name = prependModifierMarker('~', name, dynamic);
}
/* istanbul ignore if */
if (modifiers.passive) {
delete modifiers.passive;
name = prependModifierMarker('&', name, dynamic);
}
let events;
if (modifiers.native) {
delete modifiers.native;
events = el.nativeEvents || (el.nativeEvents = {});
} else {
events = el.events || (el.events = {});
}
const newHandler = rangeSetItem({ value: value.trim(), dynamic }, range);
if (modifiers !== emptyObject) {
newHandler.modifiers = modifiers;
}
const handlers = events[name];
/* istanbul ignore if */
if (Array.isArray(handlers)) {
important ? handlers.unshift(newHandler) : handlers.push(newHandler);
} else if (handlers) {
events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
} else {
events[name] = newHandler;
}
el.plain = false;
}
function getRawBindingAttr (
el,
name
) {
return el.rawAttrsMap[':' + name] ||
el.rawAttrsMap['v-bind:' + name] ||
el.rawAttrsMap[name]
}
function getBindingAttr (
el,
name,
getStatic
) {
const dynamicValue =
getAndRemoveAttr(el, ':' + name) ||
getAndRemoveAttr(el, 'v-bind:' + name);
if (dynamicValue != null) {
return parseFilters(dynamicValue)
} else if (getStatic !== false) {
const staticValue = getAndRemoveAttr(el, name);
if (staticValue != null) {
return JSON.stringify(staticValue)
}
}
}
// note: this only removes the attr from the Array (attrsList) so that it
// doesn't get processed by processAttrs.
// By default it does NOT remove it from the map (attrsMap) because the map is
// needed during codegen.
function getAndRemoveAttr (
el,
name,
removeFromMap
) {
let val;
if ((val = el.attrsMap[name]) != null) {
const list = el.attrsList;
for (let i = 0, l = list.length; i < l; i++) {
if (list[i].name === name) {
list.splice(i, 1);
break
}
}
}
if (removeFromMap) {
delete el.attrsMap[name];
}
return val
}
function getAndRemoveAttrByRegex (
el,
name
) {
const list = el.attrsList;
for (let i = 0, l = list.length; i < l; i++) {
const attr = list[i];
if (name.test(attr.name)) {
list.splice(i, 1);
return attr
}
}
}
function rangeSetItem (
item,
range
) {
if (range) {
if (range.start != null) {
item.start = range.start;
}
if (range.end != null) {
item.end = range.end;
}
}
return item
}
/* */
/**
* Cross-platform code generation for component v-model
*/
function genComponentModel (
el,
value,
modifiers
) {
const { number, trim } = modifiers || {};
const baseValueExpression = '$$v';
let valueExpression = baseValueExpression;
if (trim) {
valueExpression =
`(typeof ${baseValueExpression} === 'string'` +
`? ${baseValueExpression}.trim()` +
`: ${baseValueExpression})`;
}
if (number) {
valueExpression = `_n(${valueExpression})`;
}
const assignment = genAssignmentCode(value, valueExpression);
el.model = {
value: `(${value})`,
expression: JSON.stringify(value),
callback: `function (${baseValueExpression}) {${assignment}}`
};
}
/**
* Cross-platform codegen helper for generating v-model value assignment code.
*/
function genAssignmentCode (
value,
assignment
) {
const res = parseModel(value);
if (res.key === null) {
return `${value}=${assignment}`
} else {
return `$set(${res.exp}, ${res.key}, ${assignment})`
}
}
/**
* Parse a v-model expression into a base path and a final key segment.
* Handles both dot-path and possible square brackets.
*
* Possible cases:
*
* - test
* - test[key]
* - test[test1[key]]
* - test["a"][key]
* - xxx.test[a[a].test1[key]]
* - test.xxx.a["asa"][test1[key]]
*
*/
let len, str, chr, index$1, expressionPos, expressionEndPos;
function parseModel (val) {
// Fix https://github.com/vuejs/vue/pull/7730
// allow v-model="obj.val " (trailing whitespace)
val = val.trim();
len = val.length;
if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
index$1 = val.lastIndexOf('.');
if (index$1 > -1) {
return {
exp: val.slice(0, index$1),
key: '"' + val.slice(index$1 + 1) + '"'
}
} else {
return {
exp: val,
key: null
}
}
}
str = val;
index$1 = expressionPos = expressionEndPos = 0;
while (!eof()) {
chr = next();
/* istanbul ignore if */
if (isStringStart(chr)) {
parseString(chr);
} else if (chr === 0x5B) {
parseBracket(chr);
}
}
return {
exp: val.slice(0, expressionPos),
key: val.slice(expressionPos + 1, expressionEndPos)
}
}
function next () {
return str.charCodeAt(++index$1)
}
function eof () {
return index$1 >= len
}
function isStringStart (chr) {
return chr === 0x22 || chr === 0x27
}
function parseBracket (chr) {
let inBracket = 1;
expressionPos = index$1;
while (!eof()) {
chr = next();
if (isStringStart(chr)) {
parseString(chr);
continue
}
if (chr === 0x5B) inBracket++;
if (chr === 0x5D) inBracket--;
if (inBracket === 0) {
expressionEndPos = index$1;
break
}
}
}
function parseString (chr) {
const stringQuote = chr;
while (!eof()) {
chr = next();
if (chr === stringQuote) {
break
}
}
}
/* */
let warn$1;
// in some cases, the event used has to be determined at runtime
// so we used some reserved tokens during compile.
const RANGE_TOKEN = '__r';
const CHECKBOX_RADIO_TOKEN = '__c';
function model (
el,
dir,
_warn
) {
warn$1 = _warn;
const value = dir.value;
const modifiers = dir.modifiers;
const tag = el.tag;
const type = el.attrsMap.type;
{
// inputs with type="file" are read only and setting the input's
// value will throw an error.
if (tag === 'input' && type === 'file') {
warn$1(
`<${el.tag} v-model="${value}" type="file">:\n` +
`File inputs are read only. Use a v-on:change listener instead.`,
el.rawAttrsMap['v-model']
);
}
}
if (el.component) {
genComponentModel(el, value, modifiers);
// component v-model doesn't need extra runtime
return false
} else if (tag === 'select') {
genSelect(el, value, modifiers);
} else if (tag === 'input' && type === 'checkbox') {
genCheckboxModel(el, value, modifiers);
} else if (tag === 'input' && type === 'radio') {
genRadioModel(el, value, modifiers);
} else if (tag === 'input' || tag === 'textarea') {
genDefaultModel(el, value, modifiers);
} else if (!config.isReservedTag(tag)) {
genComponentModel(el, value, modifiers);
// component v-model doesn't need extra runtime
return false
} else {
warn$1(
`<${el.tag} v-model="${value}">: ` +
`v-model is not supported on this element type. ` +
'If you are working with contenteditable, it\'s recommended to ' +
'wrap a library dedicated for that purpose inside a custom component.',
el.rawAttrsMap['v-model']
);
}
// ensure runtime directive metadata
return true
}
function genCheckboxModel (
el,
value,
modifiers
) {
const number = modifiers && modifiers.number;
const valueBinding = getBindingAttr(el, 'value') || 'null';
const trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
const falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
addProp(el, 'checked',
`Array.isArray(${value})` +
`?_i(${value},${valueBinding})>-1` + (
trueValueBinding === 'true'
? `:(${value})`
: `:_q(${value},${trueValueBinding})`
)
);
addHandler(el, 'change',
`var $$a=${value},` +
'$$el=$event.target,' +
`$$c=$$el.checked?(${trueValueBinding}):(${falseValueBinding});` +
'if(Array.isArray($$a)){' +
`var $$v=${number ? '_n(' + valueBinding + ')' : valueBinding},` +
'$$i=_i($$a,$$v);' +
`if($$el.checked){$$i<0&&(${genAssignmentCode(value, '$$a.concat([$$v])')})}` +
`else{$$i>-1&&(${genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')})}` +
`}else{${genAssignmentCode(value, '$$c')}}`,
null, true
);
}
function genRadioModel (
el,
value,
modifiers
) {
const number = modifiers && modifiers.number;
let valueBinding = getBindingAttr(el, 'value') || 'null';
valueBinding = number ? `_n(${valueBinding})` : valueBinding;
addProp(el, 'checked', `_q(${value},${valueBinding})`);
addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true);
}
function genSelect (
el,
value,
modifiers
) {
const number = modifiers && modifiers.number;
const selectedVal = `Array.prototype.filter` +
`.call($event.target.options,function(o){return o.selected})` +
`.map(function(o){var val = "_value" in o ? o._value : o.value;` +
`return ${number ? '_n(val)' : 'val'}})`;
const assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]';
let code = `var $$selectedVal = ${selectedVal};`;
code = `${code} ${genAssignmentCode(value, assignment)}`;
addHandler(el, 'change', code, null, true);
}
function genDefaultModel (
el,
value,
modifiers
) {
const type = el.attrsMap.type;
// warn if v-bind:value conflicts with v-model
// except for inputs with v-bind:type
{
const value = el.attrsMap['v-bind:value'] || el.attrsMap[':value'];
const typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
if (value && !typeBinding) {
const binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value';
warn$1(
`${binding}="${value}" conflicts with v-model on the same element ` +
'because the latter already expands to a value binding internally',
el.rawAttrsMap[binding]
);
}
}
const { lazy, number, trim } = modifiers || {};
const needCompositionGuard = !lazy && type !== 'range';
const event = lazy
? 'change'
: type === 'range'
? RANGE_TOKEN
: 'input';
let valueExpression = '$event.target.value';
if (trim) {
valueExpression = `$event.target.value.trim()`;
}
if (number) {
valueExpression = `_n(${valueExpression})`;
}
let code = genAssignmentCode(value, valueExpression);
if (needCompositionGuard) {
code = `if($event.target.composing)return;${code}`;
}
addProp(el, 'value', `(${value})`);
addHandler(el, event, code, null, true);
if (trim || number) {
addHandler(el, 'blur', '$forceUpdate()');
}
}
/* */
// normalize v-model event tokens that can only be determined at runtime.
// it's important to place the event as the first in the array because
// the whole point is ensuring the v-model callback gets called before
// user-attached handlers.
function normalizeEvents (on) {
/* istanbul ignore if */
if (isDef(on[RANGE_TOKEN])) {
// IE input[type=range] only supports `change` event
const event = isIE ? 'change' : 'input';
on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
delete on[RANGE_TOKEN];
}
// This was originally intended to fix #4521 but no longer necessary
// after 2.5. Keeping it for backwards compat with generated code from < 2.4
/* istanbul ignore if */
if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
delete on[CHECKBOX_RADIO_TOKEN];
}
}
let target$1;
function createOnceHandler$1 (event, handler, capture) {
const _target = target$1; // save current target element in closure
return function onceHandler () {
const res = handler.apply(null, arguments);
if (res !== null) {
remove$2(event, onceHandler, capture, _target);
}
}
}
// #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp
// implementation and does not fire microtasks in between event propagation, so
// safe to exclude.
const useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53);
function add$1 (
name,
handler,
capture,
passive
) {
// 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.
if (useMicrotaskFix) {
const attachedTimestamp = currentFlushTimestamp;
const original = handler;
handler = original._wrapper = function (e) {
if (
// no bubbling, should always fire.
// this is just a safety net in case event.timeStamp is unreliable in
// certain weird environments...
e.target === e.currentTarget ||
// event is fired after handler attachment
e.timeStamp >= attachedTimestamp ||
// bail for environments that have buggy event.timeStamp implementations
// #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState
// #9681 QtWebEngine event.timeStamp is negative value
e.timeStamp <= 0 ||
// #9448 bail if event is fired in another document in a multi-page
// electron/nw.js app, since event.timeStamp will be using a different
// starting reference
e.target.ownerDocument !== document
) {
return original.apply(this, arguments)
}
};
}
target$1.addEventListener(
name,
handler,
supportsPassive
? { capture, passive }
: capture
);
}
function remove$2 (
name,
handler,
capture,
_target
) {
(_target || target$1).removeEventListener(
name,
handler._wrapper || handler,
capture
);
}
function updateDOMListeners (oldVnode, vnode) {
if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
return
}
const on = vnode.data.on || {};
const oldOn = oldVnode.data.on || {};
target$1 = vnode.elm;
normalizeEvents(on);
updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context);
target$1 = undefined;
}
var events = {
create: updateDOMListeners,
update: updateDOMListeners
};
/* */
let svgContainer;
function updateDOMProps (oldVnode, vnode) {
if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
return
}
let key, cur;
const elm = vnode.elm;
const oldProps = oldVnode.data.domProps || {};
let props = vnode.data.domProps || {};
// clone observed objects, as the user probably wants to mutate it
if (isDef(props.__ob__)) {
props = vnode.data.domProps = extend({}, props);
}
for (key in oldProps) {
if (!(key in props)) {
elm[key] = '';
}
}
for (key in props) {
cur = props[key];
// ignore children if the node has textContent or innerHTML,
// as these will throw away existing DOM nodes and cause removal errors
// on subsequent patches (#3360)
if (key === 'textContent' || key === 'innerHTML') {
if (vnode.children) vnode.children.length = 0;
if (cur === oldProps[key]) continue
// #6601 work around Chrome version <= 55 bug where single textNode
// replaced by innerHTML/textContent retains its parentNode property
if (elm.childNodes.length === 1) {
elm.removeChild(elm.childNodes[0]);
}
}
if (key === 'value' && elm.tagName !== 'PROGRESS') {
// store value as _value as well since
// non-string values will be stringified
elm._value = cur;
// avoid resetting cursor position when value is the same
const strCur = isUndef(cur) ? '' : String(cur);
if (shouldUpdateValue(elm, strCur)) {
elm.value = strCur;
}
} else if (key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) {
// IE doesn't support innerHTML for SVG elements
svgContainer = svgContainer || document.createElement('div');
svgContainer.innerHTML = `<svg>${cur}</svg>`;
const svg = svgContainer.firstChild;
while (elm.firstChild) {
elm.removeChild(elm.firstChild);
}
while (svg.firstChild) {
elm.appendChild(svg.firstChild);
}
} else if (
// skip the update if old and new VDOM state is the same.
// `value` is handled separately because the DOM value may be temporarily
// out of sync with VDOM state due to focus, composition and modifiers.
// This #4521 by skipping the unnecesarry `checked` update.
cur !== oldProps[key]
) {
// some property updates can throw
// e.g. `value` on <progress> w/ non-finite value
try {
elm[key] = cur;
} catch (e) {}
}
}
}
// check platforms/web/util/attrs.js acceptValue
function shouldUpdateValue (elm, checkVal) {
return (!elm.composing && (
elm.tagName === 'OPTION' ||
isNotInFocusAndDirty(elm, checkVal) ||
isDirtyWithModifiers(elm, checkVal)
))
}
function isNotInFocusAndDirty (elm, checkVal) {
// return true when textbox (.number and .trim) loses focus and its value is
// not equal to the updated value
let notInFocus = true;
// #6157
// work around IE bug when accessing document.activeElement in an iframe
try { notInFocus = document.activeElement !== elm; } catch (e) {}
return notInFocus && elm.value !== checkVal
}
function isDirtyWithModifiers (elm, newVal) {
const value = elm.value;
const modifiers = elm._vModifiers; // injected by v-model runtime
if (isDef(modifiers)) {
if (modifiers.number) {
return toNumber(value) !== toNumber(newVal)
}
if (modifiers.trim) {
return value.trim() !== newVal.trim()
}
}
return value !== newVal
}
var domProps = {
create: updateDOMProps,
update: updateDOMProps
};
/* */
const parseStyleText = cached(function (cssText) {
const res = {};
const listDelimiter = /;(?![^(]*\))/g;
const propertyDelimiter = /:(.+)/;
cssText.split(listDelimiter).forEach(function (item) {
if (item) {
const tmp = item.split(propertyDelimiter);
tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
}
});
return res
});
// merge static and dynamic style data on the same vnode
function normalizeStyleData (data) {
const style = normalizeStyleBinding(data.style);
// static style is pre-processed into an object during compilation
// and is always a fresh object, so it's safe to merge into it
return data.staticStyle
? extend(data.staticStyle, style)
: style
}
// normalize possible array / string values into Object
function normalizeStyleBinding (bindingStyle) {
if (Array.isArray(bindingStyle)) {
return toObject(bindingStyle)
}
if (typeof bindingStyle === 'string') {
return parseStyleText(bindingStyle)
}
return bindingStyle
}
/**
* parent component style should be after child's
* so that parent component's style could override it
*/
function getStyle (vnode, checkChild) {
const res = {};
let styleData;
if (checkChild) {
let childNode = vnode;
while (childNode.componentInstance) {
childNode = childNode.componentInstance._vnode;
if (
childNode && childNode.data &&
(styleData = normalizeStyleData(childNode.data))
) {
extend(res, styleData);
}
}
}
if ((styleData = normalizeStyleData(vnode.data))) {
extend(res, styleData);
}
let parentNode = vnode;
while ((parentNode = parentNode.parent)) {
if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
extend(res, styleData);
}
}
return res
}
/* */
const cssVarRE = /^--/;
const importantRE = /\s*!important$/;
const setProp = (el, name, val) => {
/* istanbul ignore if */
if (cssVarRE.test(name)) {
el.style.setProperty(name, val);
} else if (importantRE.test(val)) {
el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important');
} else {
const normalizedName = normalize(name);
if (Array.isArray(val)) {
// Support values array created by autoprefixer, e.g.
// {display: ["-webkit-box", "-ms-flexbox", "flex"]}
// Set them one by one, and the browser will only set those it can recognize
for (let i = 0, len = val.length; i < len; i++) {
el.style[normalizedName] = val[i];
}
} else {
el.style[normalizedName] = val;
}
}
};
const vendorNames = ['Webkit', 'Moz', 'ms'];
let emptyStyle;
const normalize = cached(function (prop) {
emptyStyle = emptyStyle || document.createElement('div').style;
prop = camelize(prop);
if (prop !== 'filter' && (prop in emptyStyle)) {
return prop
}
const capName = prop.charAt(0).toUpperCase() + prop.slice(1);
for (let i = 0; i < vendorNames.length; i++) {
const name = vendorNames[i] + capName;
if (name in emptyStyle) {
return name
}
}
});
function updateStyle (oldVnode, vnode) {
const data = vnode.data;
const oldData = oldVnode.data;
if (isUndef(data.staticStyle) && isUndef(data.style) &&
isUndef(oldData.staticStyle) && isUndef(oldData.style)
) {
return
}
let cur, name;
const el = vnode.elm;
const oldStaticStyle = oldData.staticStyle;
const oldStyleBinding = oldData.normalizedStyle || oldData.style || {};
// if static style exists, stylebinding already merged into it when doing normalizeStyleData
const oldStyle = oldStaticStyle || oldStyleBinding;
const style = normalizeStyleBinding(vnode.data.style) || {};
// store normalized style under a different key for next diff
// make sure to clone it if it's reactive, since the user likely wants
// to mutate it.
vnode.data.normalizedStyle = isDef(style.__ob__)
? extend({}, style)
: style;
const newStyle = getStyle(vnode, true);
for (name in oldStyle) {
if (isUndef(newStyle[name])) {
setProp(el, name, '');
}
}
for (name in newStyle) {
cur = newStyle[name];
if (cur !== oldStyle[name]) {
// ie9 setting to null has no effect, must use empty string
setProp(el, name, cur == null ? '' : cur);
}
}
}
var style = {
create: updateStyle,
update: updateStyle
};
/* */
const whitespaceRE = /\s+/;
/**
* Add class with compatibility for SVG since classList is not supported on
* SVG elements in IE
*/
function addClass (el, cls) {
/* istanbul ignore if */
if (!cls || !(cls = cls.trim())) {
return
}
/* istanbul ignore else */
if (el.classList) {
if (cls.indexOf(' ') > -1) {
cls.split(whitespaceRE).forEach(c => el.classList.add(c));
} else {
el.classList.add(cls);
}
} else {
const cur = ` ${el.getAttribute('class') || ''} `;
if (cur.indexOf(' ' + cls + ' ') < 0) {
el.setAttribute('class', (cur + cls).trim());
}
}
}
/**
* Remove class with compatibility for SVG since classList is not supported on
* SVG elements in IE
*/
function removeClass (el, cls) {
/* istanbul ignore if */
if (!cls || !(cls = cls.trim())) {
return
}
/* istanbul ignore else */
if (el.classList) {
if (cls.indexOf(' ') > -1) {
cls.split(whitespaceRE).forEach(c => el.classList.remove(c));
} else {
el.classList.remove(cls);
}
if (!el.classList.length) {
el.removeAttribute('class');
}
} else {
let cur = ` ${el.getAttribute('class') || ''} `;
const tar = ' ' + cls + ' ';
while (cur.indexOf(tar) >= 0) {
cur = cur.replace(tar, ' ');
}
cur = cur.trim();
if (cur) {
el.setAttribute('class', cur);
} else {
el.removeAttribute('class');
}
}
}
/* */
function resolveTransition (def$$1) {
if (!def$$1) {
return
}
/* istanbul ignore else */
if (typeof def$$1 === 'object') {
const res = {};
if (def$$1.css !== false) {
extend(res, autoCssTransition(def$$1.name || 'v'));
}
extend(res, def$$1);
return res
} else if (typeof def$$1 === 'string') {
return autoCssTransition(def$$1)
}
}
const autoCssTransition = cached(name => {
return {
enterClass: `${name}-enter`,
enterToClass: `${name}-enter-to`,
enterActiveClass: `${name}-enter-active`,
leaveClass: `${name}-leave`,
leaveToClass: `${name}-leave-to`,
leaveActiveClass: `${name}-leave-active`
}
});
const hasTransition = inBrowser && !isIE9;
const TRANSITION = 'transition';
const ANIMATION = 'animation';
// Transition property/event sniffing
let transitionProp = 'transition';
let transitionEndEvent = 'transitionend';
let animationProp = 'animation';
let animationEndEvent = 'animationend';
if (hasTransition) {
/* istanbul ignore if */
if (window.ontransitionend === undefined &&
window.onwebkittransitionend !== undefined
) {
transitionProp = 'WebkitTransition';
transitionEndEvent = 'webkitTransitionEnd';
}
if (window.onanimationend === undefined &&
window.onwebkitanimationend !== undefined
) {
animationProp = 'WebkitAnimation';
animationEndEvent = 'webkitAnimationEnd';
}
}
// binding to window is necessary to make hot reload work in IE in strict mode
const raf = inBrowser
? window.requestAnimationFrame
? window.requestAnimationFrame.bind(window)
: setTimeout
: /* istanbul ignore next */ fn => fn();
function nextFrame (fn) {
raf(() => {
raf(fn);
});
}
function addTransitionClass (el, cls) {
const transitionClasses = el._transitionClasses || (el._transitionClasses = []);
if (transitionClasses.indexOf(cls) < 0) {
transitionClasses.push(cls);
addClass(el, cls);
}
}
function removeTransitionClass (el, cls) {
if (el._transitionClasses) {
remove(el._transitionClasses, cls);
}
removeClass(el, cls);
}
function whenTransitionEnds (
el,
expectedType,
cb
) {
const { type, timeout, propCount } = getTransitionInfo(el, expectedType);
if (!type) return cb()
const event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
let ended = 0;
const end = () => {
el.removeEventListener(event, onEnd);
cb();
};
const onEnd = e => {
if (e.target === el) {
if (++ended >= propCount) {
end();
}
}
};
setTimeout(() => {
if (ended < propCount) {
end();
}
}, timeout + 1);
el.addEventListener(event, onEnd);
}
const transformRE = /\b(transform|all)(,|$)/;
function getTransitionInfo (el, expectedType) {
const styles = window.getComputedStyle(el);
// JSDOM may return undefined for transition properties
const transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');
const transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');
const transitionTimeout = getTimeout(transitionDelays, transitionDurations);
const animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');
const animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');
const animationTimeout = getTimeout(animationDelays, animationDurations);
let type;
let timeout = 0;
let propCount = 0;
/* istanbul ignore if */
if (expectedType === TRANSITION) {
if (transitionTimeout > 0) {
type = TRANSITION;
timeout = transitionTimeout;
propCount = transitionDurations.length;
}
} else if (expectedType === ANIMATION) {
if (animationTimeout > 0) {
type = ANIMATION;
timeout = animationTimeout;
propCount = animationDurations.length;
}
} else {
timeout = Math.max(transitionTimeout, animationTimeout);
type = timeout > 0
? transitionTimeout > animationTimeout
? TRANSITION
: ANIMATION
: null;
propCount = type
? type === TRANSITION
? transitionDurations.length
: animationDurations.length
: 0;
}
const hasTransform =
type === TRANSITION &&
transformRE.test(styles[transitionProp + 'Property']);
return {
type,
timeout,
propCount,
hasTransform
}
}
function getTimeout (delays, durations) {
/* istanbul ignore next */
while (delays.length < durations.length) {
delays = delays.concat(delays);
}
return Math.max.apply(null, durations.map((d, i) => {
return toMs(d) + toMs(delays[i])
}))
}
// Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
// in a locale-dependent way, using a comma instead of a dot.
// If comma is not replaced with a dot, the input will be rounded down (i.e. acting
// as a floor function) causing unexpected behaviors
function toMs (s) {
return Number(s.slice(0, -1).replace(',', '.')) * 1000
}
/* */
function enter (vnode, toggleDisplay) {
const el = vnode.elm;
// call leave callback now
if (isDef(el._leaveCb)) {
el._leaveCb.cancelled = true;
el._leaveCb();
}
const data = resolveTransition(vnode.data.transition);
if (isUndef(data)) {
return
}
/* istanbul ignore if */
if (isDef(el._enterCb) || el.nodeType !== 1) {
return
}
const {
css,
type,
enterClass,
enterToClass,
enterActiveClass,
appearClass,
appearToClass,
appearActiveClass,
beforeEnter,
enter,
afterEnter,
enterCancelled,
beforeAppear,
appear,
afterAppear,
appearCancelled,
duration
} = data;
// activeInstance will always be the <transition> component managing this
// transition. One edge case to check is when the <transition> is placed
// as the root node of a child component. In that case we need to check
// <transition>'s parent for appear check.
let context = activeInstance;
let transitionNode = activeInstance.$vnode;
while (transitionNode && transitionNode.parent) {
context = transitionNode.context;
transitionNode = transitionNode.parent;
}
const isAppear = !context._isMounted || !vnode.isRootInsert;
if (isAppear && !appear && appear !== '') {
return
}
const startClass = isAppear && appearClass
? appearClass
: enterClass;
const activeClass = isAppear && appearActiveClass
? appearActiveClass
: enterActiveClass;
const toClass = isAppear && appearToClass
? appearToClass
: enterToClass;
const beforeEnterHook = isAppear
? (beforeAppear || beforeEnter)
: beforeEnter;
const enterHook = isAppear
? (typeof appear === 'function' ? appear : enter)
: enter;
const afterEnterHook = isAppear
? (afterAppear || afterEnter)
: afterEnter;
const enterCancelledHook = isAppear
? (appearCancelled || enterCancelled)
: enterCancelled;
const explicitEnterDuration = toNumber(
isObject(duration)
? duration.enter
: duration
);
if (explicitEnterDuration != null) {
checkDuration(explicitEnterDuration, 'enter', vnode);
}
const expectsCSS = css !== false && !isIE9;
const userWantsControl = getHookArgumentsLength(enterHook);
const cb = el._enterCb = once(() => {
if (expectsCSS) {
removeTransitionClass(el, toClass);
removeTransitionClass(el, activeClass);
}
if (cb.cancelled) {
if (expectsCSS) {
removeTransitionClass(el, startClass);
}
enterCancelledHook && enterCancelledHook(el);
} else {
afterEnterHook && afterEnterHook(el);
}
el._enterCb = null;
});
if (!vnode.data.show) {
// remove pending leave element on enter by injecting an insert hook
mergeVNodeHook(vnode, 'insert', () => {
const parent = el.parentNode;
const pendingNode = parent && parent._pending && parent._pending[vnode.key];
if (pendingNode &&
pendingNode.tag === vnode.tag &&
pendingNode.elm._leaveCb
) {
pendingNode.elm._leaveCb();
}
enterHook && enterHook(el, cb);
});
}
// start enter transition
beforeEnterHook && beforeEnterHook(el);
if (expectsCSS) {
addTransitionClass(el, startClass);
addTransitionClass(el, activeClass);
nextFrame(() => {
removeTransitionClass(el, startClass);
if (!cb.cancelled) {
addTransitionClass(el, toClass);
if (!userWantsControl) {
if (isValidDuration(explicitEnterDuration)) {
setTimeout(cb, explicitEnterDuration);
} else {
whenTransitionEnds(el, type, cb);
}
}
}
});
}
if (vnode.data.show) {
toggleDisplay && toggleDisplay();
enterHook && enterHook(el, cb);
}
if (!expectsCSS && !userWantsControl) {
cb();
}
}
function leave (vnode, rm) {
const el = vnode.elm;
// call enter callback now
if (isDef(el._enterCb)) {
el._enterCb.cancelled = true;
el._enterCb();
}
const data = resolveTransition(vnode.data.transition);
if (isUndef(data) || el.nodeType !== 1) {
return rm()
}
/* istanbul ignore if */
if (isDef(el._leaveCb)) {
return
}
const {
css,
type,
leaveClass,
leaveToClass,
leaveActiveClass,
beforeLeave,
leave,
afterLeave,
leaveCancelled,
delayLeave,
duration
} = data;
const expectsCSS = css !== false && !isIE9;
const userWantsControl = getHookArgumentsLength(leave);
const explicitLeaveDuration = toNumber(
isObject(duration)
? duration.leave
: duration
);
if (isDef(explicitLeaveDuration)) {
checkDuration(explicitLeaveDuration, 'leave', vnode);
}
const cb = el._leaveCb = once(() => {
if (el.parentNode && el.parentNode._pending) {
el.parentNode._pending[vnode.key] = null;
}
if (expectsCSS) {
removeTransitionClass(el, leaveToClass);
removeTransitionClass(el, leaveActiveClass);
}
if (cb.cancelled) {
if (expectsCSS) {
removeTransitionClass(el, leaveClass);
}
leaveCancelled && leaveCancelled(el);
} else {
rm();
afterLeave && afterLeave(el);
}
el._leaveCb = null;
});
if (delayLeave) {
delayLeave(performLeave);
} else {
performLeave();
}
function performLeave () {
// the delayed leave may have already been cancelled
if (cb.cancelled) {
return
}
// record leaving element
if (!vnode.data.show && el.parentNode) {
(el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;
}
beforeLeave && beforeLeave(el);
if (expectsCSS) {
addTransitionClass(el, leaveClass);
addTransitionClass(el, leaveActiveClass);
nextFrame(() => {
removeTransitionClass(el, leaveClass);
if (!cb.cancelled) {
addTransitionClass(el, leaveToClass);
if (!userWantsControl) {
if (isValidDuration(explicitLeaveDuration)) {
setTimeout(cb, explicitLeaveDuration);
} else {
whenTransitionEnds(el, type, cb);
}
}
}
});
}
leave && leave(el, cb);
if (!expectsCSS && !userWantsControl) {
cb();
}
}
}
// only used in dev mode
function checkDuration (val, name, vnode) {
if (typeof val !== 'number') {
warn(
`<transition> explicit ${name} duration is not a valid number - ` +
`got ${JSON.stringify(val)}.`,
vnode.context
);
} else if (isNaN(val)) {
warn(
`<transition> explicit ${name} duration is NaN - ` +
'the duration expression might be incorrect.',
vnode.context
);
}
}
function isValidDuration (val) {
return typeof val === 'number' && !isNaN(val)
}
/**
* Normalize a transition hook's argument length. The hook may be:
* - a merged hook (invoker) with the original in .fns
* - a wrapped component method (check ._length)
* - a plain function (.length)
*/
function getHookArgumentsLength (fn) {
if (isUndef(fn)) {
return false
}
const invokerFns = fn.fns;
if (isDef(invokerFns)) {
// invoker
return getHookArgumentsLength(
Array.isArray(invokerFns)
? invokerFns[0]
: invokerFns
)
} else {
return (fn._length || fn.length) > 1
}
}
function _enter (_, vnode) {
if (vnode.data.show !== true) {
enter(vnode);
}
}
var transition = inBrowser ? {
create: _enter,
activate: _enter,
remove (vnode, rm) {
/* istanbul ignore else */
if (vnode.data.show !== true) {
leave(vnode, rm);
} else {
rm();
}
}
} : {};
var platformModules = [
attrs,
klass,
events,
domProps,
style,
transition
];
/* */
// the directive module should be applied last, after all
// built-in modules have been applied.
const modules = platformModules.concat(baseModules);
const patch = createPatchFunction({ nodeOps, modules });
/**
* Not type checking this file because flow doesn't like attaching
* properties to Elements.
*/
/* istanbul ignore if */
if (isIE9) {
// http://www.matts411.com/post/internet-explorer-9-oninput/
document.addEventListener('selectionchange', () => {
const el = document.activeElement;
if (el && el.vmodel) {
trigger(el, 'input');
}
});
}
const directive = {
inserted (el, binding, vnode, oldVnode) {
if (vnode.tag === 'select') {
// #6903
if (oldVnode.elm && !oldVnode.elm._vOptions) {
mergeVNodeHook(vnode, 'postpatch', () => {
directive.componentUpdated(el, binding, vnode);
});
} else {
setSelected(el, binding, vnode.context);
}
el._vOptions = [].map.call(el.options, getValue);
} else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
el._vModifiers = binding.modifiers;
if (!binding.modifiers.lazy) {
el.addEventListener('compositionstart', onCompositionStart);
el.addEventListener('compositionend', onCompositionEnd);
// Safari < 10.2 & UIWebView doesn't fire compositionend when
// switching focus before confirming composition choice
// this also fixes the issue where some browsers e.g. iOS Chrome
// fires "change" instead of "input" on autocomplete.
el.addEventListener('change', onCompositionEnd);
/* istanbul ignore if */
if (isIE9) {
el.vmodel = true;
}
}
}
},
componentUpdated (el, binding, vnode) {
if (vnode.tag === 'select') {
setSelected(el, binding, vnode.context);
// in case the options rendered by v-for have changed,
// it's possible that the value is out-of-sync with the rendered options.
// detect such cases and filter out values that no longer has a matching
// option in the DOM.
const prevOptions = el._vOptions;
const curOptions = el._vOptions = [].map.call(el.options, getValue);
if (curOptions.some((o, i) => !looseEqual(o, prevOptions[i]))) {
// trigger change event if
// no matching option found for at least one value
const needReset = el.multiple
? binding.value.some(v => hasNoMatchingOption(v, curOptions))
: binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);
if (needReset) {
trigger(el, 'change');
}
}
}
}
};
function setSelected (el, binding, vm) {
actuallySetSelected(el, binding, vm);
/* istanbul ignore if */
if (isIE || isEdge) {
setTimeout(() => {
actuallySetSelected(el, binding, vm);
}, 0);
}
}
function actuallySetSelected (el, binding, vm) {
const value = binding.value;
const isMultiple = el.multiple;
if (isMultiple && !Array.isArray(value)) {
warn(
`<select multiple v-model="${binding.expression}"> ` +
`expects an Array value for its binding, but got ${
Object.prototype.toString.call(value).slice(8, -1)
}`,
vm
);
return
}
let selected, option;
for (let i = 0, l = el.options.length; i < l; i++) {
option = el.options[i];
if (isMultiple) {
selected = looseIndexOf(value, getValue(option)) > -1;
if (option.selected !== selected) {
option.selected = selected;
}
} else {
if (looseEqual(getValue(option), value)) {
if (el.selectedIndex !== i) {
el.selectedIndex = i;
}
return
}
}
}
if (!isMultiple) {
el.selectedIndex = -1;
}
}
function hasNoMatchingOption (value, options) {
return options.every(o => !looseEqual(o, value))
}
function getValue (option) {
return '_value' in option
? option._value
: option.value
}
function onCompositionStart (e) {
e.target.composing = true;
}
function onCompositionEnd (e) {
// prevent triggering an input event for no reason
if (!e.target.composing) return
e.target.composing = false;
trigger(e.target, 'input');
}
function trigger (el, type) {
const e = document.createEvent('HTMLEvents');
e.initEvent(type, true, true);
el.dispatchEvent(e);
}
/* */
// recursively search for possible transition defined inside the component root
function locateNode (vnode) {
return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
? locateNode(vnode.componentInstance._vnode)
: vnode
}
var show = {
bind (el, { value }, vnode) {
vnode = locateNode(vnode);
const transition$$1 = vnode.data && vnode.data.transition;
const originalDisplay = el.__vOriginalDisplay =
el.style.display === 'none' ? '' : el.style.display;
if (value && transition$$1) {
vnode.data.show = true;
enter(vnode, () => {
el.style.display = originalDisplay;
});
} else {
el.style.display = value ? originalDisplay : 'none';
}
},
update (el, { value, oldValue }, vnode) {
/* istanbul ignore if */
if (!value === !oldValue) return
vnode = locateNode(vnode);
const transition$$1 = vnode.data && vnode.data.transition;
if (transition$$1) {
vnode.data.show = true;
if (value) {
enter(vnode, () => {
el.style.display = el.__vOriginalDisplay;
});
} else {
leave(vnode, () => {
el.style.display = 'none';
});
}
} else {
el.style.display = value ? el.__vOriginalDisplay : 'none';
}
},
unbind (
el,
binding,
vnode,
oldVnode,
isDestroy
) {
if (!isDestroy) {
el.style.display = el.__vOriginalDisplay;
}
}
};
var platformDirectives = {
model: directive,
show
};
/* */
const transitionProps = {
name: String,
appear: Boolean,
css: Boolean,
mode: String,
type: String,
enterClass: String,
leaveClass: String,
enterToClass: String,
leaveToClass: String,
enterActiveClass: String,
leaveActiveClass: String,
appearClass: String,
appearActiveClass: String,
appearToClass: String,
duration: [Number, String, Object]
};
// in case the child is also an abstract component, e.g. <keep-alive>
// we want to recursively retrieve the real component to be rendered
function getRealChild (vnode) {
const compOptions = vnode && vnode.componentOptions;
if (compOptions && compOptions.Ctor.options.abstract) {
return getRealChild(getFirstComponentChild(compOptions.children))
} else {
return vnode
}
}
function extractTransitionData (comp) {
const data = {};
const options = comp.$options;
// props
for (const key in options.propsData) {
data[key] = comp[key];
}
// events.
// extract listeners and pass them directly to the transition methods
const listeners = options._parentListeners;
for (const key in listeners) {
data[camelize(key)] = listeners[key];
}
return data
}
function placeholder (h, rawChild) {
if (/\d-keep-alive$/.test(rawChild.tag)) {
return h('keep-alive', {
props: rawChild.componentOptions.propsData
})
}
}
function hasParentTransition (vnode) {
while ((vnode = vnode.parent)) {
if (vnode.data.transition) {
return true
}
}
}
function isSameChild (child, oldChild) {
return oldChild.key === child.key && oldChild.tag === child.tag
}
const isNotTextNode = (c) => c.tag || isAsyncPlaceholder(c);
const isVShowDirective = d => d.name === 'show';
var Transition = {
name: 'transition',
props: transitionProps,
abstract: true,
render (h) {
let children = this.$slots.default;
if (!children) {
return
}
// filter out text nodes (possible whitespaces)
children = children.filter(isNotTextNode);
/* istanbul ignore if */
if (!children.length) {
return
}
// warn multiple elements
if (children.length > 1) {
warn(
'<transition> can only be used on a single element. Use ' +
'<transition-group> for lists.',
this.$parent
);
}
const mode = this.mode;
// warn invalid mode
if (mode && mode !== 'in-out' && mode !== 'out-in'
) {
warn(
'invalid <transition> mode: ' + mode,
this.$parent
);
}
const rawChild = children[0];
// if this is a component root node and the component's
// parent container node also has transition, skip.
if (hasParentTransition(this.$vnode)) {
return rawChild
}
// apply transition data to child
// use getRealChild() to ignore abstract components e.g. keep-alive
const child = getRealChild(rawChild);
/* istanbul ignore if */
if (!child) {
return rawChild
}
if (this._leaving) {
return placeholder(h, rawChild)
}
// ensure a key that is unique to the vnode type and to this transition
// component instance. This key will be used to remove pending leaving nodes
// during entering.
const id = `__transition-${this._uid}-`;
child.key = child.key == null
? child.isComment
? id + 'comment'
: id + child.tag
: isPrimitive(child.key)
? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)
: child.key;
const data = (child.data || (child.data = {})).transition = extractTransitionData(this);
const oldRawChild = this._vnode;
const oldChild = getRealChild(oldRawChild);
// mark v-show
// so that the transition module can hand over the control to the directive
if (child.data.directives && child.data.directives.some(isVShowDirective)) {
child.data.show = true;
}
if (
oldChild &&
oldChild.data &&
!isSameChild(child, oldChild) &&
!isAsyncPlaceholder(oldChild) &&
// #6687 component root is a comment node
!(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)
) {
// replace old child transition data with fresh one
// important for dynamic transitions!
const oldData = oldChild.data.transition = extend({}, data);
// handle transition mode
if (mode === 'out-in') {
// return placeholder node and queue update when leave finishes
this._leaving = true;
mergeVNodeHook(oldData, 'afterLeave', () => {
this._leaving = false;
this.$forceUpdate();
});
return placeholder(h, rawChild)
} else if (mode === 'in-out') {
if (isAsyncPlaceholder(child)) {
return oldRawChild
}
let delayedLeave;
const performLeave = () => { delayedLeave(); };
mergeVNodeHook(data, 'afterEnter', performLeave);
mergeVNodeHook(data, 'enterCancelled', performLeave);
mergeVNodeHook(oldData, 'delayLeave', leave => { delayedLeave = leave; });
}
}
return rawChild
}
};
/* */
const props = extend({
tag: String,
moveClass: String
}, transitionProps);
delete props.mode;
var TransitionGroup = {
props,
beforeMount () {
const update = this._update;
this._update = (vnode, hydrating) => {
const restoreActiveInstance = setActiveInstance(this);
// force removing pass
this.__patch__(
this._vnode,
this.kept,
false, // hydrating
true // removeOnly (!important, avoids unnecessary moves)
);
this._vnode = this.kept;
restoreActiveInstance();
update.call(this, vnode, hydrating);
};
},
render (h) {
const tag = this.tag || this.$vnode.data.tag || 'span';
const map = Object.create(null);
const prevChildren = this.prevChildren = this.children;
const rawChildren = this.$slots.default || [];
const children = this.children = [];
const transitionData = extractTransitionData(this);
for (let i = 0; i < rawChildren.length; i++) {
const c = rawChildren[i];
if (c.tag) {
if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
children.push(c);
map[c.key] = c
;(c.data || (c.data = {})).transition = transitionData;
} else {
const opts = c.componentOptions;
const name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
warn(`<transition-group> children must be keyed: <${name}>`);
}
}
}
if (prevChildren) {
const kept = [];
const removed = [];
for (let i = 0; i < prevChildren.length; i++) {
const c = prevChildren[i];
c.data.transition = transitionData;
c.data.pos = c.elm.getBoundingClientRect();
if (map[c.key]) {
kept.push(c);
} else {
removed.push(c);
}
}
this.kept = h(tag, null, kept);
this.removed = removed;
}
return h(tag, null, children)
},
updated () {
const children = this.prevChildren;
const moveClass = this.moveClass || ((this.name || 'v') + '-move');
if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
return
}
// we divide the work into three loops to avoid mixing DOM reads and writes
// in each iteration - which helps prevent layout thrashing.
children.forEach(callPendingCbs);
children.forEach(recordPosition);
children.forEach(applyTranslation);
// force reflow to put everything in position
// assign to this to avoid being removed in tree-shaking
// $flow-disable-line
this._reflow = document.body.offsetHeight;
children.forEach((c) => {
if (c.data.moved) {
const el = c.elm;
const s = el.style;
addTransitionClass(el, moveClass);
s.transform = s.WebkitTransform = s.transitionDuration = '';
el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
if (e && e.target !== el) {
return
}
if (!e || /transform$/.test(e.propertyName)) {
el.removeEventListener(transitionEndEvent, cb);
el._moveCb = null;
removeTransitionClass(el, moveClass);
}
});
}
});
},
methods: {
hasMove (el, moveClass) {
/* istanbul ignore if */
if (!hasTransition) {
return false
}
/* istanbul ignore if */
if (this._hasMove) {
return this._hasMove
}
// Detect whether an element with the move class applied has
// CSS transitions. Since the element may be inside an entering
// transition at this very moment, we make a clone of it and remove
// all other transition classes applied to ensure only the move class
// is applied.
const clone = el.cloneNode();
if (el._transitionClasses) {
el._transitionClasses.forEach((cls) => { removeClass(clone, cls); });
}
addClass(clone, moveClass);
clone.style.display = 'none';
this.$el.appendChild(clone);
const info = getTransitionInfo(clone);
this.$el.removeChild(clone);
return (this._hasMove = info.hasTransform)
}
}
};
function callPendingCbs (c) {
/* istanbul ignore if */
if (c.elm._moveCb) {
c.elm._moveCb();
}
/* istanbul ignore if */
if (c.elm._enterCb) {
c.elm._enterCb();
}
}
function recordPosition (c) {
c.data.newPos = c.elm.getBoundingClientRect();
}
function applyTranslation (c) {
const oldPos = c.data.pos;
const newPos = c.data.newPos;
const dx = oldPos.left - newPos.left;
const dy = oldPos.top - newPos.top;
if (dx || dy) {
c.data.moved = true;
const s = c.elm.style;
s.transform = s.WebkitTransform = `translate(${dx}px,${dy}px)`;
s.transitionDuration = '0s';
}
}
var platformComponents = {
Transition,
TransitionGroup
};
/* */
// install platform specific utils
Vue.config.mustUseProp = mustUseProp;
Vue.config.isReservedTag = isReservedTag;
Vue.config.isReservedAttr = isReservedAttr;
Vue.config.getTagNamespace = getTagNamespace;
Vue.config.isUnknownElement = isUnknownElement;
// install platform runtime directives & components
extend(Vue.options.directives, platformDirectives);
extend(Vue.options.components, platformComponents);
// install platform patch function
Vue.prototype.__patch__ = inBrowser ? patch : noop;
// public mount method
Vue.prototype.$mount = function (
el,
hydrating
) {
el = el && inBrowser ? query(el) : undefined;
return mountComponent(this, el, hydrating)
};
// devtools global hook
/* istanbul ignore next */
if (inBrowser) {
setTimeout(() => {
if (config.devtools) {
if (devtools) {
devtools.emit('init', Vue);
} else {
console[console.info ? 'info' : 'log'](
'Download the Vue Devtools extension for a better development experience:\n' +
'https://github.com/vuejs/vue-devtools'
);
}
}
if (config.productionTip !== false &&
typeof console !== 'undefined'
) {
console[console.info ? 'info' : 'log'](
`You are running Vue in development mode.\n` +
`Make sure to turn on production mode when deploying for production.\n` +
`See more tips at https://vuejs.org/guide/deployment.html`
);
}
}, 0);
}
/* */
const defaultTagRE = /\{\{((?:.|\r?\n)+?)\}\}/g;
const regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;
const buildRegex = cached(delimiters => {
const open = delimiters[0].replace(regexEscapeRE, '\\$&');
const close = delimiters[1].replace(regexEscapeRE, '\\$&');
return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
});
function parseText (
text,
delimiters
) {
const tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE;
if (!tagRE.test(text)) {
return
}
const tokens = [];
const rawTokens = [];
let lastIndex = tagRE.lastIndex = 0;
let match, index, tokenValue;
while ((match = tagRE.exec(text))) {
index = match.index;
// push text token
if (index > lastIndex) {
rawTokens.push(tokenValue = text.slice(lastIndex, index));
tokens.push(JSON.stringify(tokenValue));
}
// tag token
const exp = parseFilters(match[1].trim());
tokens.push(`_s(${exp})`);
rawTokens.push({ '@binding': exp });
lastIndex = index + match[0].length;
}
if (lastIndex < text.length) {
rawTokens.push(tokenValue = text.slice(lastIndex));
tokens.push(JSON.stringify(tokenValue));
}
return {
expression: tokens.join('+'),
tokens: rawTokens
}
}
/* */
function transformNode (el, options) {
const warn = options.warn || baseWarn;
const staticClass = getAndRemoveAttr(el, 'class');
if (staticClass) {
const res = parseText(staticClass, options.delimiters);
if (res) {
warn(
`class="${staticClass}": ` +
'Interpolation inside attributes has been removed. ' +
'Use v-bind or the colon shorthand instead. For example, ' +
'instead of <div class="{{ val }}">, use <div :class="val">.',
el.rawAttrsMap['class']
);
}
}
if (staticClass) {
el.staticClass = JSON.stringify(staticClass);
}
const classBinding = getBindingAttr(el, 'class', false /* getStatic */);
if (classBinding) {
el.classBinding = classBinding;
}
}
function genData (el) {
let data = '';
if (el.staticClass) {
data += `staticClass:${el.staticClass},`;
}
if (el.classBinding) {
data += `class:${el.classBinding},`;
}
return data
}
var klass$1 = {
staticKeys: ['staticClass'],
transformNode,
genData
};
/* */
function transformNode$1 (el, options) {
const warn = options.warn || baseWarn;
const staticStyle = getAndRemoveAttr(el, 'style');
if (staticStyle) {
/* istanbul ignore if */
{
const res = parseText(staticStyle, options.delimiters);
if (res) {
warn(
`style="${staticStyle}": ` +
'Interpolation inside attributes has been removed. ' +
'Use v-bind or the colon shorthand instead. For example, ' +
'instead of <div style="{{ val }}">, use <div :style="val">.',
el.rawAttrsMap['style']
);
}
}
el.staticStyle = JSON.stringify(parseStyleText(staticStyle));
}
const styleBinding = getBindingAttr(el, 'style', false /* getStatic */);
if (styleBinding) {
el.styleBinding = styleBinding;
}
}
function genData$1 (el) {
let data = '';
if (el.staticStyle) {
data += `staticStyle:${el.staticStyle},`;
}
if (el.styleBinding) {
data += `style:(${el.styleBinding}),`;
}
return data
}
var style$1 = {
staticKeys: ['staticStyle'],
transformNode: transformNode$1,
genData: genData$1
};
/* */
let decoder;
var he = {
decode (html) {
decoder = decoder || document.createElement('div');
decoder.innerHTML = html;
return decoder.textContent
}
};
/* */
const isUnaryTag = makeMap(
'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' +
'link,meta,param,source,track,wbr'
);
// Elements that you can, intentionally, leave open
// (and which close themselves)
const canBeLeftOpenTag = makeMap(
'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source'
);
// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
const isNonPhrasingTag = makeMap(
'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' +
'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' +
'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' +
'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' +
'title,tr,track'
);
/**
* Not type-checking this file because it's mostly vendor code.
*/
// Regular Expressions for parsing tags and attributes
const attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
const dynamicArgAttribute = /^\s*((?:v-[\w-]+:|@|:|#)\[[^=]+\][^\s"'<>\/=]*)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
const ncname = `[a-zA-Z_][\\-\\.0-9_a-zA-Z${unicodeRegExp.source}]*`;
const qnameCapture = `((?:${ncname}\\:)?${ncname})`;
const startTagOpen = new RegExp(`^<${qnameCapture}`);
const startTagClose = /^\s*(\/?)>/;
const endTag = new RegExp(`^<\\/${qnameCapture}[^>]*>`);
const doctype = /^<!DOCTYPE [^>]+>/i;
// #7298: escape - to avoid being passed as HTML comment when inlined in page
const comment = /^<!\--/;
const conditionalComment = /^<!\[/;
// Special Elements (can contain anything)
const isPlainTextElement = makeMap('script,style,textarea', true);
const reCache = {};
const decodingMap = {
'&lt;': '<',
'&gt;': '>',
'&quot;': '"',
'&amp;': '&',
'&#10;': '\n',
'&#9;': '\t',
'&#39;': "'"
};
const encodedAttr = /&(?:lt|gt|quot|amp|#39);/g;
const encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#39|#10|#9);/g;
// #5992
const isIgnoreNewlineTag = makeMap('pre,textarea', true);
const shouldIgnoreFirstNewline = (tag, html) => tag && isIgnoreNewlineTag(tag) && html[0] === '\n';
function decodeAttr (value, shouldDecodeNewlines) {
const re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr;
return value.replace(re, match => decodingMap[match])
}
function parseHTML (html, options) {
const stack = [];
const expectHTML = options.expectHTML;
const isUnaryTag$$1 = options.isUnaryTag || no;
const canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no;
let index = 0;
let last, lastTag;
while (html) {
last = html;
// Make sure we're not in a plaintext content element like script/style
if (!lastTag || !isPlainTextElement(lastTag)) {
let textEnd = html.indexOf('<');
if (textEnd === 0) {
// Comment:
if (comment.test(html)) {
const commentEnd = html.indexOf('-->');
if (commentEnd >= 0) {
if (options.shouldKeepComment) {
options.comment(html.substring(4, commentEnd), index, index + commentEnd + 3);
}
advance(commentEnd + 3);
continue
}
}
// http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
if (conditionalComment.test(html)) {
const conditionalEnd = html.indexOf(']>');
if (conditionalEnd >= 0) {
advance(conditionalEnd + 2);
continue
}
}
// Doctype:
const doctypeMatch = html.match(doctype);
if (doctypeMatch) {
advance(doctypeMatch[0].length);
continue
}
// End tag:
const endTagMatch = html.match(endTag);
if (endTagMatch) {
const curIndex = index;
advance(endTagMatch[0].length);
parseEndTag(endTagMatch[1], curIndex, index);
continue
}
// Start tag:
const startTagMatch = parseStartTag();
if (startTagMatch) {
handleStartTag(startTagMatch);
if (shouldIgnoreFirstNewline(startTagMatch.tagName, html)) {
advance(1);
}
continue
}
}
let text, rest, next;
if (textEnd >= 0) {
rest = html.slice(textEnd);
while (
!endTag.test(rest) &&
!startTagOpen.test(rest) &&
!comment.test(rest) &&
!conditionalComment.test(rest)
) {
// < in plain text, be forgiving and treat it as text
next = rest.indexOf('<', 1);
if (next < 0) break
textEnd += next;
rest = html.slice(textEnd);
}
text = html.substring(0, textEnd);
}
if (textEnd < 0) {
text = html;
}
if (text) {
advance(text.length);
}
if (options.chars && text) {
options.chars(text, index - text.length, index);
}
} else {
let endTagLength = 0;
const stackedTag = lastTag.toLowerCase();
const reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
const rest = html.replace(reStackedTag, function (all, text, endTag) {
endTagLength = endTag.length;
if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
text = text
.replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298
.replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
}
if (shouldIgnoreFirstNewline(stackedTag, text)) {
text = text.slice(1);
}
if (options.chars) {
options.chars(text);
}
return ''
});
index += html.length - rest.length;
html = rest;
parseEndTag(stackedTag, index - endTagLength, index);
}
if (html === last) {
options.chars && options.chars(html);
if (!stack.length && options.warn) {
options.warn(`Mal-formatted tag at end of template: "${html}"`, { start: index + html.length });
}
break
}
}
// Clean up any remaining tags
parseEndTag();
function advance (n) {
index += n;
html = html.substring(n);
}
function parseStartTag () {
const start = html.match(startTagOpen);
if (start) {
const match = {
tagName: start[1],
attrs: [],
start: index
};
advance(start[0].length);
let end, attr;
while (!(end = html.match(startTagClose)) && (attr = html.match(dynamicArgAttribute) || html.match(attribute))) {
attr.start = index;
advance(attr[0].length);
attr.end = index;
match.attrs.push(attr);
}
if (end) {
match.unarySlash = end[1];
advance(end[0].length);
match.end = index;
return match
}
}
}
function handleStartTag (match) {
const tagName = match.tagName;
const unarySlash = match.unarySlash;
if (expectHTML) {
if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
parseEndTag(lastTag);
}
if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
parseEndTag(tagName);
}
}
const unary = isUnaryTag$$1(tagName) || !!unarySlash;
const l = match.attrs.length;
const attrs = new Array(l);
for (let i = 0; i < l; i++) {
const args = match.attrs[i];
const value = args[3] || args[4] || args[5] || '';
const shouldDecodeNewlines = tagName === 'a' && args[1] === 'href'
? options.shouldDecodeNewlinesForHref
: options.shouldDecodeNewlines;
attrs[i] = {
name: args[1],
value: decodeAttr(value, shouldDecodeNewlines)
};
if (options.outputSourceRange) {
attrs[i].start = args.start + args[0].match(/^\s*/).length;
attrs[i].end = args.end;
}
}
if (!unary) {
stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs, start: match.start, end: match.end });
lastTag = tagName;
}
if (options.start) {
options.start(tagName, attrs, unary, match.start, match.end);
}
}
function parseEndTag (tagName, start, end) {
let pos, lowerCasedTagName;
if (start == null) start = index;
if (end == null) end = index;
// Find the closest opened tag of the same type
if (tagName) {
lowerCasedTagName = tagName.toLowerCase();
for (pos = stack.length - 1; pos >= 0; pos--) {
if (stack[pos].lowerCasedTag === lowerCasedTagName) {
break
}
}
} else {
// If no tag name is provided, clean shop
pos = 0;
}
if (pos >= 0) {
// Close all the open elements, up the stack
for (let i = stack.length - 1; i >= pos; i--) {
if (i > pos || !tagName &&
options.warn
) {
options.warn(
`tag <${stack[i].tag}> has no matching end tag.`,
{ start: stack[i].start, end: stack[i].end }
);
}
if (options.end) {
options.end(stack[i].tag, start, end);
}
}
// Remove the open elements from the stack
stack.length = pos;
lastTag = pos && stack[pos - 1].tag;
} else if (lowerCasedTagName === 'br') {
if (options.start) {
options.start(tagName, [], true, start, end);
}
} else if (lowerCasedTagName === 'p') {
if (options.start) {
options.start(tagName, [], false, start, end);
}
if (options.end) {
options.end(tagName, start, end);
}
}
}
}
/* */
const onRE = /^@|^v-on:/;
const dirRE = /^v-|^@|^:|^#/;
const forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
const stripParensRE = /^\(|\)$/g;
const dynamicArgRE = /^\[.*\]$/;
const argRE = /:(.*)$/;
const bindRE = /^:|^\.|^v-bind:/;
const modifierRE = /\.[^.\]]+(?=[^\]]*$)/g;
const slotRE = /^v-slot(:|$)|^#/;
const lineBreakRE = /[\r\n]/;
const whitespaceRE$1 = /\s+/g;
const invalidAttributeRE = /[\s"'<>\/=]/;
const decodeHTMLCached = cached(he.decode);
const emptySlotScopeToken = `_empty_`;
// configurable state
let warn$2;
let delimiters;
let transforms;
let preTransforms;
let postTransforms;
let platformIsPreTag;
let platformMustUseProp;
let platformGetTagNamespace;
let maybeComponent;
function createASTElement (
tag,
attrs,
parent
) {
return {
type: 1,
tag,
attrsList: attrs,
attrsMap: makeAttrsMap(attrs),
rawAttrsMap: {},
parent,
children: []
}
}
/**
* Convert HTML string to AST.
*/
function parse (
template,
options
) {
warn$2 = options.warn || baseWarn;
platformIsPreTag = options.isPreTag || no;
platformMustUseProp = options.mustUseProp || no;
platformGetTagNamespace = options.getTagNamespace || no;
const isReservedTag = options.isReservedTag || no;
maybeComponent = (el) => !!el.component || !isReservedTag(el.tag);
transforms = pluckModuleFunction(options.modules, 'transformNode');
preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');
delimiters = options.delimiters;
const stack = [];
const preserveWhitespace = options.preserveWhitespace !== false;
const whitespaceOption = options.whitespace;
let root;
let currentParent;
let inVPre = false;
let inPre = false;
let warned = false;
function warnOnce (msg, range) {
if (!warned) {
warned = true;
warn$2(msg, range);
}
}
function closeElement (element) {
trimEndingWhitespace(element);
if (!inVPre && !element.processed) {
element = processElement(element, options);
}
// tree management
if (!stack.length && element !== root) {
// allow root elements with v-if, v-else-if and v-else
if (root.if && (element.elseif || element.else)) {
{
checkRootConstraints(element);
}
addIfCondition(root, {
exp: element.elseif,
block: element
});
} else {
warnOnce(
`Component template should contain exactly one root element. ` +
`If you are using v-if on multiple elements, ` +
`use v-else-if to chain them instead.`,
{ start: element.start }
);
}
}
if (currentParent && !element.forbidden) {
if (element.elseif || element.else) {
processIfConditions(element, currentParent);
} else {
if (element.slotScope) {
// scoped slot
// keep it in the children list so that v-else(-if) conditions can
// find it as the prev node.
const name = element.slotTarget || '"default"'
;(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
}
currentParent.children.push(element);
element.parent = currentParent;
}
}
// final children cleanup
// filter out scoped slots
element.children = element.children.filter(c => !(c).slotScope);
// remove trailing whitespace node again
trimEndingWhitespace(element);
// check pre state
if (element.pre) {
inVPre = false;
}
if (platformIsPreTag(element.tag)) {
inPre = false;
}
// apply post-transforms
for (let i = 0; i < postTransforms.length; i++) {
postTransforms[i](element, options);
}
}
function trimEndingWhitespace (el) {
// remove trailing whitespace node
if (!inPre) {
let lastNode;
while (
(lastNode = el.children[el.children.length - 1]) &&
lastNode.type === 3 &&
lastNode.text === ' '
) {
el.children.pop();
}
}
}
function checkRootConstraints (el) {
if (el.tag === 'slot' || el.tag === 'template') {
warnOnce(
`Cannot use <${el.tag}> as component root element because it may ` +
'contain multiple nodes.',
{ start: el.start }
);
}
if (el.attrsMap.hasOwnProperty('v-for')) {
warnOnce(
'Cannot use v-for on stateful component root element because ' +
'it renders multiple elements.',
el.rawAttrsMap['v-for']
);
}
}
parseHTML(template, {
warn: warn$2,
expectHTML: options.expectHTML,
isUnaryTag: options.isUnaryTag,
canBeLeftOpenTag: options.canBeLeftOpenTag,
shouldDecodeNewlines: options.shouldDecodeNewlines,
shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
shouldKeepComment: options.comments,
outputSourceRange: options.outputSourceRange,
start (tag, attrs, unary, start, end) {
// check namespace.
// inherit parent ns if there is one
const ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag);
// handle IE svg bug
/* istanbul ignore if */
if (isIE && ns === 'svg') {
attrs = guardIESVGBug(attrs);
}
let element = createASTElement(tag, attrs, currentParent);
if (ns) {
element.ns = ns;
}
{
if (options.outputSourceRange) {
element.start = start;
element.end = end;
element.rawAttrsMap = element.attrsList.reduce((cumulated, attr) => {
cumulated[attr.name] = attr;
return cumulated
}, {});
}
attrs.forEach(attr => {
if (invalidAttributeRE.test(attr.name)) {
warn$2(
`Invalid dynamic argument expression: attribute names cannot contain ` +
`spaces, quotes, <, >, / or =.`,
{
start: attr.start + attr.name.indexOf(`[`),
end: attr.start + attr.name.length
}
);
}
});
}
if (isForbiddenTag(element) && !isServerRendering()) {
element.forbidden = true;
warn$2(
'Templates should only be responsible for mapping the state to the ' +
'UI. Avoid placing tags with side-effects in your templates, such as ' +
`<${tag}>` + ', as they will not be parsed.',
{ start: element.start }
);
}
// apply pre-transforms
for (let i = 0; i < preTransforms.length; i++) {
element = preTransforms[i](element, options) || element;
}
if (!inVPre) {
processPre(element);
if (element.pre) {
inVPre = true;
}
}
if (platformIsPreTag(element.tag)) {
inPre = true;
}
if (inVPre) {
processRawAttrs(element);
} else if (!element.processed) {
// structural directives
processFor(element);
processIf(element);
processOnce(element);
}
if (!root) {
root = element;
{
checkRootConstraints(root);
}
}
if (!unary) {
currentParent = element;
stack.push(element);
} else {
closeElement(element);
}
},
end (tag, start, end) {
const element = stack[stack.length - 1];
// pop stack
stack.length -= 1;
currentParent = stack[stack.length - 1];
if (options.outputSourceRange) {
element.end = end;
}
closeElement(element);
},
chars (text, start, end) {
if (!currentParent) {
{
if (text === template) {
warnOnce(
'Component template requires a root element, rather than just text.',
{ start }
);
} else if ((text = text.trim())) {
warnOnce(
`text "${text}" outside root element will be ignored.`,
{ start }
);
}
}
return
}
// IE textarea placeholder bug
/* istanbul ignore if */
if (isIE &&
currentParent.tag === 'textarea' &&
currentParent.attrsMap.placeholder === text
) {
return
}
const children = currentParent.children;
if (inPre || text.trim()) {
text = isTextTag(currentParent) ? text : decodeHTMLCached(text);
} else if (!children.length) {
// remove the whitespace-only node right after an opening tag
text = '';
} else if (whitespaceOption) {
if (whitespaceOption === 'condense') {
// in condense mode, remove the whitespace node if it contains
// line break, otherwise condense to a single space
text = lineBreakRE.test(text) ? '' : ' ';
} else {
text = ' ';
}
} else {
text = preserveWhitespace ? ' ' : '';
}
if (text) {
if (!inPre && whitespaceOption === 'condense') {
// condense consecutive whitespaces into single space
text = text.replace(whitespaceRE$1, ' ');
}
let res;
let child;
if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
child = {
type: 2,
expression: res.expression,
tokens: res.tokens,
text
};
} else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
child = {
type: 3,
text
};
}
if (child) {
if (options.outputSourceRange) {
child.start = start;
child.end = end;
}
children.push(child);
}
}
},
comment (text, start, end) {
// adding anyting as a sibling to the root node is forbidden
// comments should still be allowed, but ignored
if (currentParent) {
const child = {
type: 3,
text,
isComment: true
};
if (options.outputSourceRange) {
child.start = start;
child.end = end;
}
currentParent.children.push(child);
}
}
});
return root
}
function processPre (el) {
if (getAndRemoveAttr(el, 'v-pre') != null) {
el.pre = true;
}
}
function processRawAttrs (el) {
const list = el.attrsList;
const len = list.length;
if (len) {
const attrs = el.attrs = new Array(len);
for (let i = 0; i < len; i++) {
attrs[i] = {
name: list[i].name,
value: JSON.stringify(list[i].value)
};
if (list[i].start != null) {
attrs[i].start = list[i].start;
attrs[i].end = list[i].end;
}
}
} else if (!el.pre) {
// non root node in pre blocks with no attributes
el.plain = true;
}
}
function processElement (
element,
options
) {
processKey(element);
// determine whether this is a plain element after
// removing structural attributes
element.plain = (
!element.key &&
!element.scopedSlots &&
!element.attrsList.length
);
processRef(element);
processSlotContent(element);
processSlotOutlet(element);
processComponent(element);
for (let i = 0; i < transforms.length; i++) {
element = transforms[i](element, options) || element;
}
processAttrs(element);
return element
}
function processKey (el) {
const exp = getBindingAttr(el, 'key');
if (exp) {
{
if (el.tag === 'template') {
warn$2(
`<template> cannot be keyed. Place the key on real elements instead.`,
getRawBindingAttr(el, 'key')
);
}
if (el.for) {
const iterator = el.iterator2 || el.iterator1;
const parent = el.parent;
if (iterator && iterator === exp && parent && parent.tag === 'transition-group') {
warn$2(
`Do not use v-for index as key on <transition-group> children, ` +
`this is the same as not using keys.`,
getRawBindingAttr(el, 'key'),
true /* tip */
);
}
}
}
el.key = exp;
}
}
function processRef (el) {
const ref = getBindingAttr(el, 'ref');
if (ref) {
el.ref = ref;
el.refInFor = checkInFor(el);
}
}
function processFor (el) {
let exp;
if ((exp = getAndRemoveAttr(el, 'v-for'))) {
const res = parseFor(exp);
if (res) {
extend(el, res);
} else {
warn$2(
`Invalid v-for expression: ${exp}`,
el.rawAttrsMap['v-for']
);
}
}
}
function parseFor (exp) {
const inMatch = exp.match(forAliasRE);
if (!inMatch) return
const res = {};
res.for = inMatch[2].trim();
const alias = inMatch[1].trim().replace(stripParensRE, '');
const iteratorMatch = alias.match(forIteratorRE);
if (iteratorMatch) {
res.alias = alias.replace(forIteratorRE, '').trim();
res.iterator1 = iteratorMatch[1].trim();
if (iteratorMatch[2]) {
res.iterator2 = iteratorMatch[2].trim();
}
} else {
res.alias = alias;
}
return res
}
function processIf (el) {
const exp = getAndRemoveAttr(el, 'v-if');
if (exp) {
el.if = exp;
addIfCondition(el, {
exp: exp,
block: el
});
} else {
if (getAndRemoveAttr(el, 'v-else') != null) {
el.else = true;
}
const elseif = getAndRemoveAttr(el, 'v-else-if');
if (elseif) {
el.elseif = elseif;
}
}
}
function processIfConditions (el, parent) {
const prev = findPrevElement(parent.children);
if (prev && prev.if) {
addIfCondition(prev, {
exp: el.elseif,
block: el
});
} else {
warn$2(
`v-${el.elseif ? ('else-if="' + el.elseif + '"') : 'else'} ` +
`used on element <${el.tag}> without corresponding v-if.`,
el.rawAttrsMap[el.elseif ? 'v-else-if' : 'v-else']
);
}
}
function findPrevElement (children) {
let i = children.length;
while (i--) {
if (children[i].type === 1) {
return children[i]
} else {
if (children[i].text !== ' ') {
warn$2(
`text "${children[i].text.trim()}" between v-if and v-else(-if) ` +
`will be ignored.`,
children[i]
);
}
children.pop();
}
}
}
function addIfCondition (el, condition) {
if (!el.ifConditions) {
el.ifConditions = [];
}
el.ifConditions.push(condition);
}
function processOnce (el) {
const once$$1 = getAndRemoveAttr(el, 'v-once');
if (once$$1 != null) {
el.once = true;
}
}
// handle content being passed to a component as slot,
// e.g. <template slot="xxx">, <div slot-scope="xxx">
function processSlotContent (el) {
let slotScope;
if (el.tag === 'template') {
slotScope = getAndRemoveAttr(el, 'scope');
/* istanbul ignore if */
if (slotScope) {
warn$2(
`the "scope" attribute for scoped slots have been deprecated and ` +
`replaced by "slot-scope" since 2.5. The new "slot-scope" attribute ` +
`can also be used on plain elements in addition to <template> to ` +
`denote scoped slots.`,
el.rawAttrsMap['scope'],
true
);
}
el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope');
} else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) {
/* istanbul ignore if */
if (el.attrsMap['v-for']) {
warn$2(
`Ambiguous combined usage of slot-scope and v-for on <${el.tag}> ` +
`(v-for takes higher priority). Use a wrapper <template> for the ` +
`scoped slot to make it clearer.`,
el.rawAttrsMap['slot-scope'],
true
);
}
el.slotScope = slotScope;
}
// slot="xxx"
const slotTarget = getBindingAttr(el, 'slot');
if (slotTarget) {
el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
el.slotTargetDynamic = !!(el.attrsMap[':slot'] || el.attrsMap['v-bind:slot']);
// preserve slot as an attribute for native shadow DOM compat
// only for non-scoped slots.
if (el.tag !== 'template' && !el.slotScope) {
addAttr(el, 'slot', slotTarget, getRawBindingAttr(el, 'slot'));
}
}
// 2.6 v-slot syntax
{
if (el.tag === 'template') {
// v-slot on <template>
const slotBinding = getAndRemoveAttrByRegex(el, slotRE);
if (slotBinding) {
{
if (el.slotTarget || el.slotScope) {
warn$2(
`Unexpected mixed usage of different slot syntaxes.`,
el
);
}
if (el.parent && !maybeComponent(el.parent)) {
warn$2(
`<template v-slot> can only appear at the root level inside ` +
`the receiving component`,
el
);
}
}
const { name, dynamic } = getSlotName(slotBinding);
el.slotTarget = name;
el.slotTargetDynamic = dynamic;
el.slotScope = slotBinding.value || emptySlotScopeToken; // force it into a scoped slot for perf
}
} else {
// v-slot on component, denotes default slot
const slotBinding = getAndRemoveAttrByRegex(el, slotRE);
if (slotBinding) {
{
if (!maybeComponent(el)) {
warn$2(
`v-slot can only be used on components or <template>.`,
slotBinding
);
}
if (el.slotScope || el.slotTarget) {
warn$2(
`Unexpected mixed usage of different slot syntaxes.`,
el
);
}
if (el.scopedSlots) {
warn$2(
`To avoid scope ambiguity, the default slot should also use ` +
`<template> syntax when there are other named slots.`,
slotBinding
);
}
}
// add the component's children to its default slot
const slots = el.scopedSlots || (el.scopedSlots = {});
const { name, dynamic } = getSlotName(slotBinding);
const slotContainer = slots[name] = createASTElement('template', [], el);
slotContainer.slotTarget = name;
slotContainer.slotTargetDynamic = dynamic;
slotContainer.children = el.children.filter((c) => {
if (!c.slotScope) {
c.parent = slotContainer;
return true
}
});
slotContainer.slotScope = slotBinding.value || emptySlotScopeToken;
// remove children as they are returned from scopedSlots now
el.children = [];
// mark el non-plain so data gets generated
el.plain = false;
}
}
}
}
function getSlotName (binding) {
let name = binding.name.replace(slotRE, '');
if (!name) {
if (binding.name[0] !== '#') {
name = 'default';
} else {
warn$2(
`v-slot shorthand syntax requires a slot name.`,
binding
);
}
}
return dynamicArgRE.test(name)
// dynamic [name]
? { name: name.slice(1, -1), dynamic: true }
// static name
: { name: `"${name}"`, dynamic: false }
}
// handle <slot/> outlets
function processSlotOutlet (el) {
if (el.tag === 'slot') {
el.slotName = getBindingAttr(el, 'name');
if (el.key) {
warn$2(
`\`key\` does not work on <slot> because slots are abstract outlets ` +
`and can possibly expand into multiple elements. ` +
`Use the key on a wrapping element instead.`,
getRawBindingAttr(el, 'key')
);
}
}
}
function processComponent (el) {
let binding;
if ((binding = getBindingAttr(el, 'is'))) {
el.component = binding;
}
if (getAndRemoveAttr(el, 'inline-template') != null) {
el.inlineTemplate = true;
}
}
function processAttrs (el) {
const list = el.attrsList;
let i, l, name, rawName, value, modifiers, syncGen, isDynamic;
for (i = 0, l = list.length; i < l; i++) {
name = rawName = list[i].name;
value = list[i].value;
if (dirRE.test(name)) {
// mark element as dynamic
el.hasBindings = true;
// modifiers
modifiers = parseModifiers(name.replace(dirRE, ''));
// support .foo shorthand syntax for the .prop modifier
if (modifiers) {
name = name.replace(modifierRE, '');
}
if (bindRE.test(name)) { // v-bind
name = name.replace(bindRE, '');
value = parseFilters(value);
isDynamic = dynamicArgRE.test(name);
if (isDynamic) {
name = name.slice(1, -1);
}
if (
value.trim().length === 0
) {
warn$2(
`The value for a v-bind expression cannot be empty. Found in "v-bind:${name}"`
);
}
if (modifiers) {
if (modifiers.prop && !isDynamic) {
name = camelize(name);
if (name === 'innerHtml') name = 'innerHTML';
}
if (modifiers.camel && !isDynamic) {
name = camelize(name);
}
if (modifiers.sync) {
syncGen = genAssignmentCode(value, `$event`);
if (!isDynamic) {
addHandler(
el,
`update:${camelize(name)}`,
syncGen,
null,
false,
warn$2,
list[i]
);
if (hyphenate(name) !== camelize(name)) {
addHandler(
el,
`update:${hyphenate(name)}`,
syncGen,
null,
false,
warn$2,
list[i]
);
}
} else {
// handler w/ dynamic event name
addHandler(
el,
`"update:"+(${name})`,
syncGen,
null,
false,
warn$2,
list[i],
true // dynamic
);
}
}
}
if ((modifiers && modifiers.prop) || (
!el.component && platformMustUseProp(el.tag, el.attrsMap.type, name)
)) {
addProp(el, name, value, list[i], isDynamic);
} else {
addAttr(el, name, value, list[i], isDynamic);
}
} else if (onRE.test(name)) { // v-on
name = name.replace(onRE, '');
isDynamic = dynamicArgRE.test(name);
if (isDynamic) {
name = name.slice(1, -1);
}
addHandler(el, name, value, modifiers, false, warn$2, list[i], isDynamic);
} else { // normal directives
name = name.replace(dirRE, '');
// parse arg
const argMatch = name.match(argRE);
let arg = argMatch && argMatch[1];
isDynamic = false;
if (arg) {
name = name.slice(0, -(arg.length + 1));
if (dynamicArgRE.test(arg)) {
arg = arg.slice(1, -1);
isDynamic = true;
}
}
addDirective(el, name, rawName, value, arg, isDynamic, modifiers, list[i]);
if (name === 'model') {
checkForAliasModel(el, value);
}
}
} else {
// literal attribute
{
const res = parseText(value, delimiters);
if (res) {
warn$2(
`${name}="${value}": ` +
'Interpolation inside attributes has been removed. ' +
'Use v-bind or the colon shorthand instead. For example, ' +
'instead of <div id="{{ val }}">, use <div :id="val">.',
list[i]
);
}
}
addAttr(el, name, JSON.stringify(value), list[i]);
// #6887 firefox doesn't update muted state if set via attribute
// even immediately after element creation
if (!el.component &&
name === 'muted' &&
platformMustUseProp(el.tag, el.attrsMap.type, name)) {
addProp(el, name, 'true', list[i]);
}
}
}
}
function checkInFor (el) {
let parent = el;
while (parent) {
if (parent.for !== undefined) {
return true
}
parent = parent.parent;
}
return false
}
function parseModifiers (name) {
const match = name.match(modifierRE);
if (match) {
const ret = {};
match.forEach(m => { ret[m.slice(1)] = true; });
return ret
}
}
function makeAttrsMap (attrs) {
const map = {};
for (let i = 0, l = attrs.length; i < l; i++) {
if (
map[attrs[i].name] && !isIE && !isEdge
) {
warn$2('duplicate attribute: ' + attrs[i].name, attrs[i]);
}
map[attrs[i].name] = attrs[i].value;
}
return map
}
// for script (e.g. type="x/template") or style, do not decode content
function isTextTag (el) {
return el.tag === 'script' || el.tag === 'style'
}
function isForbiddenTag (el) {
return (
el.tag === 'style' ||
(el.tag === 'script' && (
!el.attrsMap.type ||
el.attrsMap.type === 'text/javascript'
))
)
}
const ieNSBug = /^xmlns:NS\d+/;
const ieNSPrefix = /^NS\d+:/;
/* istanbul ignore next */
function guardIESVGBug (attrs) {
const res = [];
for (let i = 0; i < attrs.length; i++) {
const attr = attrs[i];
if (!ieNSBug.test(attr.name)) {
attr.name = attr.name.replace(ieNSPrefix, '');
res.push(attr);
}
}
return res
}
function checkForAliasModel (el, value) {
let _el = el;
while (_el) {
if (_el.for && _el.alias === value) {
warn$2(
`<${el.tag} v-model="${value}">: ` +
`You are binding v-model directly to a v-for iteration alias. ` +
`This will not be able to modify the v-for source array because ` +
`writing to the alias is like modifying a function local variable. ` +
`Consider using an array of objects and use v-model on an object property instead.`,
el.rawAttrsMap['v-model']
);
}
_el = _el.parent;
}
}
/* */
function preTransformNode (el, options) {
if (el.tag === 'input') {
const map = el.attrsMap;
if (!map['v-model']) {
return
}
let typeBinding;
if (map[':type'] || map['v-bind:type']) {
typeBinding = getBindingAttr(el, 'type');
}
if (!map.type && !typeBinding && map['v-bind']) {
typeBinding = `(${map['v-bind']}).type`;
}
if (typeBinding) {
const ifCondition = getAndRemoveAttr(el, 'v-if', true);
const ifConditionExtra = ifCondition ? `&&(${ifCondition})` : ``;
const hasElse = getAndRemoveAttr(el, 'v-else', true) != null;
const elseIfCondition = getAndRemoveAttr(el, 'v-else-if', true);
// 1. checkbox
const branch0 = cloneASTElement(el);
// process for on the main node
processFor(branch0);
addRawAttr(branch0, 'type', 'checkbox');
processElement(branch0, options);
branch0.processed = true; // prevent it from double-processed
branch0.if = `(${typeBinding})==='checkbox'` + ifConditionExtra;
addIfCondition(branch0, {
exp: branch0.if,
block: branch0
});
// 2. add radio else-if condition
const branch1 = cloneASTElement(el);
getAndRemoveAttr(branch1, 'v-for', true);
addRawAttr(branch1, 'type', 'radio');
processElement(branch1, options);
addIfCondition(branch0, {
exp: `(${typeBinding})==='radio'` + ifConditionExtra,
block: branch1
});
// 3. other
const branch2 = cloneASTElement(el);
getAndRemoveAttr(branch2, 'v-for', true);
addRawAttr(branch2, ':type', typeBinding);
processElement(branch2, options);
addIfCondition(branch0, {
exp: ifCondition,
block: branch2
});
if (hasElse) {
branch0.else = true;
} else if (elseIfCondition) {
branch0.elseif = elseIfCondition;
}
return branch0
}
}
}
function cloneASTElement (el) {
return createASTElement(el.tag, el.attrsList.slice(), el.parent)
}
var model$1 = {
preTransformNode
};
var modules$1 = [
klass$1,
style$1,
model$1
];
/* */
function text (el, dir) {
if (dir.value) {
addProp(el, 'textContent', `_s(${dir.value})`, dir);
}
}
/* */
function html (el, dir) {
if (dir.value) {
addProp(el, 'innerHTML', `_s(${dir.value})`, dir);
}
}
var directives$1 = {
model,
text,
html
};
/* */
const baseOptions = {
expectHTML: true,
modules: modules$1,
directives: directives$1,
isPreTag,
isUnaryTag,
mustUseProp,
canBeLeftOpenTag,
isReservedTag,
getTagNamespace,
staticKeys: genStaticKeys(modules$1)
};
/* */
let isStaticKey;
let isPlatformReservedTag;
const genStaticKeysCached = cached(genStaticKeys$1);
/**
* Goal of the optimizer: walk the generated template AST tree
* and detect sub-trees that are purely static, i.e. parts of
* the DOM that never needs to change.
*
* Once we detect these sub-trees, we can:
*
* 1. Hoist them into constants, so that we no longer need to
* create fresh nodes for them on each re-render;
* 2. Completely skip them in the patching process.
*/
function optimize (root, options) {
if (!root) return
isStaticKey = genStaticKeysCached(options.staticKeys || '');
isPlatformReservedTag = options.isReservedTag || no;
// first pass: mark all non-static nodes.
markStatic$1(root);
// second pass: mark static roots.
markStaticRoots(root, false);
}
function genStaticKeys$1 (keys) {
return makeMap(
'type,tag,attrsList,attrsMap,plain,parent,children,attrs,start,end,rawAttrsMap' +
(keys ? ',' + keys : '')
)
}
function markStatic$1 (node) {
node.static = isStatic(node);
if (node.type === 1) {
// do not make component slot content static. this avoids
// 1. components not able to mutate slot nodes
// 2. static slot content fails for hot-reloading
if (
!isPlatformReservedTag(node.tag) &&
node.tag !== 'slot' &&
node.attrsMap['inline-template'] == null
) {
return
}
for (let i = 0, l = node.children.length; i < l; i++) {
const child = node.children[i];
markStatic$1(child);
if (!child.static) {
node.static = false;
}
}
if (node.ifConditions) {
for (let i = 1, l = node.ifConditions.length; i < l; i++) {
const block = node.ifConditions[i].block;
markStatic$1(block);
if (!block.static) {
node.static = false;
}
}
}
}
}
function markStaticRoots (node, isInFor) {
if (node.type === 1) {
if (node.static || node.once) {
node.staticInFor = isInFor;
}
// For a node to qualify as a static root, it should have children that
// are not just static text. Otherwise the cost of hoisting out will
// outweigh the benefits and it's better off to just always render it fresh.
if (node.static && node.children.length && !(
node.children.length === 1 &&
node.children[0].type === 3
)) {
node.staticRoot = true;
return
} else {
node.staticRoot = false;
}
if (node.children) {
for (let i = 0, l = node.children.length; i < l; i++) {
markStaticRoots(node.children[i], isInFor || !!node.for);
}
}
if (node.ifConditions) {
for (let i = 1, l = node.ifConditions.length; i < l; i++) {
markStaticRoots(node.ifConditions[i].block, isInFor);
}
}
}
}
function isStatic (node) {
if (node.type === 2) { // expression
return false
}
if (node.type === 3) { // text
return true
}
return !!(node.pre || (
!node.hasBindings && // no dynamic bindings
!node.if && !node.for && // not v-if or v-for or v-else
!isBuiltInTag(node.tag) && // not a built-in
isPlatformReservedTag(node.tag) && // not a component
!isDirectChildOfTemplateFor(node) &&
Object.keys(node).every(isStaticKey)
))
}
function isDirectChildOfTemplateFor (node) {
while (node.parent) {
node = node.parent;
if (node.tag !== 'template') {
return false
}
if (node.for) {
return true
}
}
return false
}
/* */
const fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function(?:\s+[\w$]+)?\s*\(/;
const fnInvokeRE = /\([^)]*?\);*$/;
const simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/;
// KeyboardEvent.keyCode aliases
const keyCodes = {
esc: 27,
tab: 9,
enter: 13,
space: 32,
up: 38,
left: 37,
right: 39,
down: 40,
'delete': [8, 46]
};
// KeyboardEvent.key aliases
const keyNames = {
// #7880: IE11 and Edge use `Esc` for Escape key name.
esc: ['Esc', 'Escape'],
tab: 'Tab',
enter: 'Enter',
// #9112: IE11 uses `Spacebar` for Space key name.
space: [' ', 'Spacebar'],
// #7806: IE11 uses key names without `Arrow` prefix for arrow keys.
up: ['Up', 'ArrowUp'],
left: ['Left', 'ArrowLeft'],
right: ['Right', 'ArrowRight'],
down: ['Down', 'ArrowDown'],
// #9112: IE11 uses `Del` for Delete key name.
'delete': ['Backspace', 'Delete', 'Del']
};
// #4868: modifiers that prevent the execution of the listener
// need to explicitly return null so that we can determine whether to remove
// the listener for .once
const genGuard = condition => `if(${condition})return null;`;
const modifierCode = {
stop: '$event.stopPropagation();',
prevent: '$event.preventDefault();',
self: genGuard(`$event.target !== $event.currentTarget`),
ctrl: genGuard(`!$event.ctrlKey`),
shift: genGuard(`!$event.shiftKey`),
alt: genGuard(`!$event.altKey`),
meta: genGuard(`!$event.metaKey`),
left: genGuard(`'button' in $event && $event.button !== 0`),
middle: genGuard(`'button' in $event && $event.button !== 1`),
right: genGuard(`'button' in $event && $event.button !== 2`)
};
function genHandlers (
events,
isNative
) {
const prefix = isNative ? 'nativeOn:' : 'on:';
let staticHandlers = ``;
let dynamicHandlers = ``;
for (const name in events) {
const handlerCode = genHandler(events[name]);
if (events[name] && events[name].dynamic) {
dynamicHandlers += `${name},${handlerCode},`;
} else {
staticHandlers += `"${name}":${handlerCode},`;
}
}
staticHandlers = `{${staticHandlers.slice(0, -1)}}`;
if (dynamicHandlers) {
return prefix + `_d(${staticHandlers},[${dynamicHandlers.slice(0, -1)}])`
} else {
return prefix + staticHandlers
}
}
function genHandler (handler) {
if (!handler) {
return 'function(){}'
}
if (Array.isArray(handler)) {
return `[${handler.map(handler => genHandler(handler)).join(',')}]`
}
const isMethodPath = simplePathRE.test(handler.value);
const isFunctionExpression = fnExpRE.test(handler.value);
const isFunctionInvocation = simplePathRE.test(handler.value.replace(fnInvokeRE, ''));
if (!handler.modifiers) {
if (isMethodPath || isFunctionExpression) {
return handler.value
}
return `function($event){${
isFunctionInvocation ? `return ${handler.value}` : handler.value
}}` // inline statement
} else {
let code = '';
let genModifierCode = '';
const keys = [];
for (const key in handler.modifiers) {
if (modifierCode[key]) {
genModifierCode += modifierCode[key];
// left/right
if (keyCodes[key]) {
keys.push(key);
}
} else if (key === 'exact') {
const modifiers = (handler.modifiers);
genModifierCode += genGuard(
['ctrl', 'shift', 'alt', 'meta']
.filter(keyModifier => !modifiers[keyModifier])
.map(keyModifier => `$event.${keyModifier}Key`)
.join('||')
);
} else {
keys.push(key);
}
}
if (keys.length) {
code += genKeyFilter(keys);
}
// Make sure modifiers like prevent and stop get executed after key filtering
if (genModifierCode) {
code += genModifierCode;
}
const handlerCode = isMethodPath
? `return ${handler.value}($event)`
: isFunctionExpression
? `return (${handler.value})($event)`
: isFunctionInvocation
? `return ${handler.value}`
: handler.value;
return `function($event){${code}${handlerCode}}`
}
}
function genKeyFilter (keys) {
return (
// make sure the key filters only apply to KeyboardEvents
// #9441: can't use 'keyCode' in $event because Chrome autofill fires fake
// key events that do not have keyCode property...
`if(!$event.type.indexOf('key')&&` +
`${keys.map(genFilterCode).join('&&')})return null;`
)
}
function genFilterCode (key) {
const keyVal = parseInt(key, 10);
if (keyVal) {
return `$event.keyCode!==${keyVal}`
}
const keyCode = keyCodes[key];
const keyName = keyNames[key];
return (
`_k($event.keyCode,` +
`${JSON.stringify(key)},` +
`${JSON.stringify(keyCode)},` +
`$event.key,` +
`${JSON.stringify(keyName)}` +
`)`
)
}
/* */
function on (el, dir) {
if (dir.modifiers) {
warn(`v-on without argument does not support modifiers.`);
}
el.wrapListeners = (code) => `_g(${code},${dir.value})`;
}
/* */
function bind$1 (el, dir) {
el.wrapData = (code) => {
return `_b(${code},'${el.tag}',${dir.value},${
dir.modifiers && dir.modifiers.prop ? 'true' : 'false'
}${
dir.modifiers && dir.modifiers.sync ? ',true' : ''
})`
};
}
/* */
var baseDirectives = {
on,
bind: bind$1,
cloak: noop
};
/* */
class CodegenState {
constructor (options) {
this.options = options;
this.warn = options.warn || baseWarn;
this.transforms = pluckModuleFunction(options.modules, 'transformCode');
this.dataGenFns = pluckModuleFunction(options.modules, 'genData');
this.directives = extend(extend({}, baseDirectives), options.directives);
const isReservedTag = options.isReservedTag || no;
this.maybeComponent = (el) => !!el.component || !isReservedTag(el.tag);
this.onceId = 0;
this.staticRenderFns = [];
this.pre = false;
}
}
function generate (
ast,
options
) {
const state = new CodegenState(options);
const code = ast ? genElement(ast, state) : '_c("div")';
return {
render: `with(this){return ${code}}`,
staticRenderFns: state.staticRenderFns
}
}
function genElement (el, state) {
if (el.parent) {
el.pre = el.pre || el.parent.pre;
}
if (el.staticRoot && !el.staticProcessed) {
return genStatic(el, state)
} else if (el.once && !el.onceProcessed) {
return genOnce(el, state)
} else if (el.for && !el.forProcessed) {
return genFor(el, state)
} else if (el.if && !el.ifProcessed) {
return genIf(el, state)
} else if (el.tag === 'template' && !el.slotTarget && !state.pre) {
return genChildren(el, state) || 'void 0'
} else if (el.tag === 'slot') {
return genSlot(el, state)
} else {
// component or element
let code;
if (el.component) {
code = genComponent(el.component, el, state);
} else {
let data;
if (!el.plain || (el.pre && state.maybeComponent(el))) {
data = genData$2(el, state);
}
const children = el.inlineTemplate ? null : genChildren(el, state, true);
code = `_c('${el.tag}'${
data ? `,${data}` : '' // data
}${
children ? `,${children}` : '' // children
})`;
}
// module transforms
for (let i = 0; i < state.transforms.length; i++) {
code = state.transforms[i](el, code);
}
return code
}
}
// hoist static sub-trees out
function genStatic (el, state) {
el.staticProcessed = true;
// Some elements (templates) need to behave differently inside of a v-pre
// node. All pre nodes are static roots, so we can use this as a location to
// wrap a state change and reset it upon exiting the pre node.
const originalPreState = state.pre;
if (el.pre) {
state.pre = el.pre;
}
state.staticRenderFns.push(`with(this){return ${genElement(el, state)}}`);
state.pre = originalPreState;
return `_m(${
state.staticRenderFns.length - 1
}${
el.staticInFor ? ',true' : ''
})`
}
// v-once
function genOnce (el, state) {
el.onceProcessed = true;
if (el.if && !el.ifProcessed) {
return genIf(el, state)
} else if (el.staticInFor) {
let key = '';
let parent = el.parent;
while (parent) {
if (parent.for) {
key = parent.key;
break
}
parent = parent.parent;
}
if (!key) {
state.warn(
`v-once can only be used inside v-for that is keyed. `,
el.rawAttrsMap['v-once']
);
return genElement(el, state)
}
return `_o(${genElement(el, state)},${state.onceId++},${key})`
} else {
return genStatic(el, state)
}
}
function genIf (
el,
state,
altGen,
altEmpty
) {
el.ifProcessed = true; // avoid recursion
return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty)
}
function genIfConditions (
conditions,
state,
altGen,
altEmpty
) {
if (!conditions.length) {
return altEmpty || '_e()'
}
const condition = conditions.shift();
if (condition.exp) {
return `(${condition.exp})?${
genTernaryExp(condition.block)
}:${
genIfConditions(conditions, state, altGen, altEmpty)
}`
} else {
return `${genTernaryExp(condition.block)}`
}
// v-if with v-once should generate code like (a)?_m(0):_m(1)
function genTernaryExp (el) {
return altGen
? altGen(el, state)
: el.once
? genOnce(el, state)
: genElement(el, state)
}
}
function genFor (
el,
state,
altGen,
altHelper
) {
const exp = el.for;
const alias = el.alias;
const iterator1 = el.iterator1 ? `,${el.iterator1}` : '';
const iterator2 = el.iterator2 ? `,${el.iterator2}` : '';
if (state.maybeComponent(el) &&
el.tag !== 'slot' &&
el.tag !== 'template' &&
!el.key
) {
state.warn(
`<${el.tag} v-for="${alias} in ${exp}">: component lists rendered with ` +
`v-for should have explicit keys. ` +
`See https://vuejs.org/guide/list.html#key for more info.`,
el.rawAttrsMap['v-for'],
true /* tip */
);
}
el.forProcessed = true; // avoid recursion
return `${altHelper || '_l'}((${exp}),` +
`function(${alias}${iterator1}${iterator2}){` +
`return ${(altGen || genElement)(el, state)}` +
'})'
}
function genData$2 (el, state) {
let data = '{';
// directives first.
// directives may mutate the el's other properties before they are generated.
const dirs = genDirectives(el, state);
if (dirs) data += dirs + ',';
// key
if (el.key) {
data += `key:${el.key},`;
}
// ref
if (el.ref) {
data += `ref:${el.ref},`;
}
if (el.refInFor) {
data += `refInFor:true,`;
}
// pre
if (el.pre) {
data += `pre:true,`;
}
// record original tag name for components using "is" attribute
if (el.component) {
data += `tag:"${el.tag}",`;
}
// module data generation functions
for (let i = 0; i < state.dataGenFns.length; i++) {
data += state.dataGenFns[i](el);
}
// attributes
if (el.attrs) {
data += `attrs:${genProps(el.attrs)},`;
}
// DOM props
if (el.props) {
data += `domProps:${genProps(el.props)},`;
}
// event handlers
if (el.events) {
data += `${genHandlers(el.events, false)},`;
}
if (el.nativeEvents) {
data += `${genHandlers(el.nativeEvents, true)},`;
}
// slot target
// only for non-scoped slots
if (el.slotTarget && !el.slotScope) {
data += `slot:${el.slotTarget},`;
}
// scoped slots
if (el.scopedSlots) {
data += `${genScopedSlots(el, el.scopedSlots, state)},`;
}
// component v-model
if (el.model) {
data += `model:{value:${
el.model.value
},callback:${
el.model.callback
},expression:${
el.model.expression
}},`;
}
// inline-template
if (el.inlineTemplate) {
const inlineTemplate = genInlineTemplate(el, state);
if (inlineTemplate) {
data += `${inlineTemplate},`;
}
}
data = data.replace(/,$/, '') + '}';
// v-bind dynamic argument wrap
// v-bind with dynamic arguments must be applied using the same v-bind object
// merge helper so that class/style/mustUseProp attrs are handled correctly.
if (el.dynamicAttrs) {
data = `_b(${data},"${el.tag}",${genProps(el.dynamicAttrs)})`;
}
// v-bind data wrap
if (el.wrapData) {
data = el.wrapData(data);
}
// v-on data wrap
if (el.wrapListeners) {
data = el.wrapListeners(data);
}
return data
}
function genDirectives (el, state) {
const dirs = el.directives;
if (!dirs) return
let res = 'directives:[';
let hasRuntime = false;
let i, l, dir, needRuntime;
for (i = 0, l = dirs.length; i < l; i++) {
dir = dirs[i];
needRuntime = true;
const gen = state.directives[dir.name];
if (gen) {
// compile-time directive that manipulates AST.
// returns true if it also needs a runtime counterpart.
needRuntime = !!gen(el, dir, state.warn);
}
if (needRuntime) {
hasRuntime = true;
res += `{name:"${dir.name}",rawName:"${dir.rawName}"${
dir.value ? `,value:(${dir.value}),expression:${JSON.stringify(dir.value)}` : ''
}${
dir.arg ? `,arg:${dir.isDynamicArg ? dir.arg : `"${dir.arg}"`}` : ''
}${
dir.modifiers ? `,modifiers:${JSON.stringify(dir.modifiers)}` : ''
}},`;
}
}
if (hasRuntime) {
return res.slice(0, -1) + ']'
}
}
function genInlineTemplate (el, state) {
const ast = el.children[0];
if (el.children.length !== 1 || ast.type !== 1) {
state.warn(
'Inline-template components must have exactly one child element.',
{ start: el.start }
);
}
if (ast && ast.type === 1) {
const inlineRenderFns = generate(ast, state.options);
return `inlineTemplate:{render:function(){${
inlineRenderFns.render
}},staticRenderFns:[${
inlineRenderFns.staticRenderFns.map(code => `function(){${code}}`).join(',')
}]}`
}
}
function genScopedSlots (
el,
slots,
state
) {
// by default scoped slots are considered "stable", this allows child
// components with only scoped slots to skip forced updates from parent.
// but in some cases we have to bail-out of this optimization
// for example if the slot contains dynamic names, has v-if or v-for on them...
let needsForceUpdate = el.for || Object.keys(slots).some(key => {
const slot = slots[key];
return (
slot.slotTargetDynamic ||
slot.if ||
slot.for ||
containsSlotChild(slot) // is passing down slot from parent which may be dynamic
)
});
// #9534: if a component with scoped slots is inside a conditional branch,
// it's possible for the same component to be reused but with different
// compiled slot content. To avoid that, we generate a unique key based on
// the generated code of all the slot contents.
let needsKey = !!el.if;
// OR when it is inside another scoped slot or v-for (the reactivity may be
// disconnected due to the intermediate scope variable)
// #9438, #9506
// TODO: this can be further optimized by properly analyzing in-scope bindings
// and skip force updating ones that do not actually use scope variables.
if (!needsForceUpdate) {
let parent = el.parent;
while (parent) {
if (
(parent.slotScope && parent.slotScope !== emptySlotScopeToken) ||
parent.for
) {
needsForceUpdate = true;
break
}
if (parent.if) {
needsKey = true;
}
parent = parent.parent;
}
}
const generatedSlots = Object.keys(slots)
.map(key => genScopedSlot(slots[key], state))
.join(',');
return `scopedSlots:_u([${generatedSlots}]${
needsForceUpdate ? `,null,true` : ``
}${
!needsForceUpdate && needsKey ? `,null,false,${hash(generatedSlots)}` : ``
})`
}
function hash(str) {
let hash = 5381;
let i = str.length;
while(i) {
hash = (hash * 33) ^ str.charCodeAt(--i);
}
return hash >>> 0
}
function containsSlotChild (el) {
if (el.type === 1) {
if (el.tag === 'slot') {
return true
}
return el.children.some(containsSlotChild)
}
return false
}
function genScopedSlot (
el,
state
) {
const isLegacySyntax = el.attrsMap['slot-scope'];
if (el.if && !el.ifProcessed && !isLegacySyntax) {
return genIf(el, state, genScopedSlot, `null`)
}
if (el.for && !el.forProcessed) {
return genFor(el, state, genScopedSlot)
}
const slotScope = el.slotScope === emptySlotScopeToken
? ``
: String(el.slotScope);
const fn = `function(${slotScope}){` +
`return ${el.tag === 'template'
? el.if && isLegacySyntax
? `(${el.if})?${genChildren(el, state) || 'undefined'}:undefined`
: genChildren(el, state) || 'undefined'
: genElement(el, state)
}}`;
// reverse proxy v-slot without scope on this.$slots
const reverseProxy = slotScope ? `` : `,proxy:true`;
return `{key:${el.slotTarget || `"default"`},fn:${fn}${reverseProxy}}`
}
function genChildren (
el,
state,
checkSkip,
altGenElement,
altGenNode
) {
const children = el.children;
if (children.length) {
const el = children[0];
// optimize single v-for
if (children.length === 1 &&
el.for &&
el.tag !== 'template' &&
el.tag !== 'slot'
) {
const normalizationType = checkSkip
? state.maybeComponent(el) ? `,1` : `,0`
: ``;
return `${(altGenElement || genElement)(el, state)}${normalizationType}`
}
const normalizationType = checkSkip
? getNormalizationType(children, state.maybeComponent)
: 0;
const gen = altGenNode || genNode;
return `[${children.map(c => gen(c, state)).join(',')}]${
normalizationType ? `,${normalizationType}` : ''
}`
}
}
// determine the normalization needed for the children array.
// 0: no normalization needed
// 1: simple normalization needed (possible 1-level deep nested array)
// 2: full normalization needed
function getNormalizationType (
children,
maybeComponent
) {
let res = 0;
for (let i = 0; i < children.length; i++) {
const el = children[i];
if (el.type !== 1) {
continue
}
if (needsNormalization(el) ||
(el.ifConditions && el.ifConditions.some(c => needsNormalization(c.block)))) {
res = 2;
break
}
if (maybeComponent(el) ||
(el.ifConditions && el.ifConditions.some(c => maybeComponent(c.block)))) {
res = 1;
}
}
return res
}
function needsNormalization (el) {
return el.for !== undefined || el.tag === 'template' || el.tag === 'slot'
}
function genNode (node, state) {
if (node.type === 1) {
return genElement(node, state)
} else if (node.type === 3 && node.isComment) {
return genComment(node)
} else {
return genText(node)
}
}
function genText (text) {
return `_v(${text.type === 2
? text.expression // no need for () because already wrapped in _s()
: transformSpecialNewlines(JSON.stringify(text.text))
})`
}
function genComment (comment) {
return `_e(${JSON.stringify(comment.text)})`
}
function genSlot (el, state) {
const slotName = el.slotName || '"default"';
const children = genChildren(el, state);
let res = `_t(${slotName}${children ? `,${children}` : ''}`;
const attrs = el.attrs || el.dynamicAttrs
? genProps((el.attrs || []).concat(el.dynamicAttrs || []).map(attr => ({
// slot props are camelized
name: camelize(attr.name),
value: attr.value,
dynamic: attr.dynamic
})))
: null;
const bind$$1 = el.attrsMap['v-bind'];
if ((attrs || bind$$1) && !children) {
res += `,null`;
}
if (attrs) {
res += `,${attrs}`;
}
if (bind$$1) {
res += `${attrs ? '' : ',null'},${bind$$1}`;
}
return res + ')'
}
// componentName is el.component, take it as argument to shun flow's pessimistic refinement
function genComponent (
componentName,
el,
state
) {
const children = el.inlineTemplate ? null : genChildren(el, state, true);
return `_c(${componentName},${genData$2(el, state)}${
children ? `,${children}` : ''
})`
}
function genProps (props) {
let staticProps = ``;
let dynamicProps = ``;
for (let i = 0; i < props.length; i++) {
const prop = props[i];
const value = transformSpecialNewlines(prop.value);
if (prop.dynamic) {
dynamicProps += `${prop.name},${value},`;
} else {
staticProps += `"${prop.name}":${value},`;
}
}
staticProps = `{${staticProps.slice(0, -1)}}`;
if (dynamicProps) {
return `_d(${staticProps},[${dynamicProps.slice(0, -1)}])`
} else {
return staticProps
}
}
// #3895, #4268
function transformSpecialNewlines (text) {
return text
.replace(/\u2028/g, '\\u2028')
.replace(/\u2029/g, '\\u2029')
}
/* */
// these keywords should not appear inside expressions, but operators like
// typeof, instanceof and in are allowed
const prohibitedKeywordRE = new RegExp('\\b' + (
'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
'super,throw,while,yield,delete,export,import,return,switch,default,' +
'extends,finally,continue,debugger,function,arguments'
).split(',').join('\\b|\\b') + '\\b');
// these unary operators should not be used as property/method names
const unaryOperatorsRE = new RegExp('\\b' + (
'delete,typeof,void'
).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)');
// strip strings in expressions
const stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;
// detect problematic expressions in a template
function detectErrors (ast, warn) {
if (ast) {
checkNode(ast, warn);
}
}
function checkNode (node, warn) {
if (node.type === 1) {
for (const name in node.attrsMap) {
if (dirRE.test(name)) {
const value = node.attrsMap[name];
if (value) {
const range = node.rawAttrsMap[name];
if (name === 'v-for') {
checkFor(node, `v-for="${value}"`, warn, range);
} else if (name === 'v-slot' || name[0] === '#') {
checkFunctionParameterExpression(value, `${name}="${value}"`, warn, range);
} else if (onRE.test(name)) {
checkEvent(value, `${name}="${value}"`, warn, range);
} else {
checkExpression(value, `${name}="${value}"`, warn, range);
}
}
}
}
if (node.children) {
for (let i = 0; i < node.children.length; i++) {
checkNode(node.children[i], warn);
}
}
} else if (node.type === 2) {
checkExpression(node.expression, node.text, warn, node);
}
}
function checkEvent (exp, text, warn, range) {
const stripped = exp.replace(stripStringRE, '');
const keywordMatch = stripped.match(unaryOperatorsRE);
if (keywordMatch && stripped.charAt(keywordMatch.index - 1) !== '$') {
warn(
`avoid using JavaScript unary operator as property name: ` +
`"${keywordMatch[0]}" in expression ${text.trim()}`,
range
);
}
checkExpression(exp, text, warn, range);
}
function checkFor (node, text, warn, range) {
checkExpression(node.for || '', text, warn, range);
checkIdentifier(node.alias, 'v-for alias', text, warn, range);
checkIdentifier(node.iterator1, 'v-for iterator', text, warn, range);
checkIdentifier(node.iterator2, 'v-for iterator', text, warn, range);
}
function checkIdentifier (
ident,
type,
text,
warn,
range
) {
if (typeof ident === 'string') {
try {
new Function(`var ${ident}=_`);
} catch (e) {
warn(`invalid ${type} "${ident}" in expression: ${text.trim()}`, range);
}
}
}
function checkExpression (exp, text, warn, range) {
try {
new Function(`return ${exp}`);
} catch (e) {
const keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
if (keywordMatch) {
warn(
`avoid using JavaScript keyword as property name: ` +
`"${keywordMatch[0]}"\n Raw expression: ${text.trim()}`,
range
);
} else {
warn(
`invalid expression: ${e.message} in\n\n` +
` ${exp}\n\n` +
` Raw expression: ${text.trim()}\n`,
range
);
}
}
}
function checkFunctionParameterExpression (exp, text, warn, range) {
try {
new Function(exp, '');
} catch (e) {
warn(
`invalid function parameter expression: ${e.message} in\n\n` +
` ${exp}\n\n` +
` Raw expression: ${text.trim()}\n`,
range
);
}
}
/* */
const range = 2;
function generateCodeFrame (
source,
start = 0,
end = source.length
) {
const lines = source.split(/\r?\n/);
let count = 0;
const res = [];
for (let i = 0; i < lines.length; i++) {
count += lines[i].length + 1;
if (count >= start) {
for (let j = i - range; j <= i + range || end > count; j++) {
if (j < 0 || j >= lines.length) continue
res.push(`${j + 1}${repeat(` `, 3 - String(j + 1).length)}| ${lines[j]}`);
const lineLength = lines[j].length;
if (j === i) {
// push underline
const pad = start - (count - lineLength) + 1;
const length = end > count ? lineLength - pad : end - start;
res.push(` | ` + repeat(` `, pad) + repeat(`^`, length));
} else if (j > i) {
if (end > count) {
const length = Math.min(end - count, lineLength);
res.push(` | ` + repeat(`^`, length));
}
count += lineLength + 1;
}
}
break
}
}
return res.join('\n')
}
function repeat (str, n) {
let result = '';
if (n > 0) {
while (true) { // eslint-disable-line
if (n & 1) result += str;
n >>>= 1;
if (n <= 0) break
str += str;
}
}
return result
}
/* */
function createFunction (code, errors) {
try {
return new Function(code)
} catch (err) {
errors.push({ err, code });
return noop
}
}
function createCompileToFunctionFn (compile) {
const cache = Object.create(null);
return function compileToFunctions (
template,
options,
vm
) {
options = extend({}, options);
const warn$$1 = options.warn || warn;
delete options.warn;
/* istanbul ignore if */
{
// detect possible CSP restriction
try {
new Function('return 1');
} catch (e) {
if (e.toString().match(/unsafe-eval|CSP/)) {
warn$$1(
'It seems you are using the standalone build of Vue.js in an ' +
'environment with Content Security Policy that prohibits unsafe-eval. ' +
'The template compiler cannot work in this environment. Consider ' +
'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
'templates into render functions.'
);
}
}
}
// check cache
const key = options.delimiters
? String(options.delimiters) + template
: template;
if (cache[key]) {
return cache[key]
}
// compile
const compiled = compile(template, options);
// check compilation errors/tips
{
if (compiled.errors && compiled.errors.length) {
if (options.outputSourceRange) {
compiled.errors.forEach(e => {
warn$$1(
`Error compiling template:\n\n${e.msg}\n\n` +
generateCodeFrame(template, e.start, e.end),
vm
);
});
} else {
warn$$1(
`Error compiling template:\n\n${template}\n\n` +
compiled.errors.map(e => `- ${e}`).join('\n') + '\n',
vm
);
}
}
if (compiled.tips && compiled.tips.length) {
if (options.outputSourceRange) {
compiled.tips.forEach(e => tip(e.msg, vm));
} else {
compiled.tips.forEach(msg => tip(msg, vm));
}
}
}
// turn code into functions
const res = {};
const fnGenErrors = [];
res.render = createFunction(compiled.render, fnGenErrors);
res.staticRenderFns = compiled.staticRenderFns.map(code => {
return createFunction(code, fnGenErrors)
});
// check function generation errors.
// this should only happen if there is a bug in the compiler itself.
// mostly for codegen development use
/* istanbul ignore if */
{
if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
warn$$1(
`Failed to generate render function:\n\n` +
fnGenErrors.map(({ err, code }) => `${err.toString()} in\n\n${code}\n`).join('\n'),
vm
);
}
}
return (cache[key] = res)
}
}
/* */
function createCompilerCreator (baseCompile) {
return function createCompiler (baseOptions) {
function compile (
template,
options
) {
const finalOptions = Object.create(baseOptions);
const errors = [];
const tips = [];
let warn = (msg, range, tip) => {
(tip ? tips : errors).push(msg);
};
if (options) {
if (options.outputSourceRange) {
// $flow-disable-line
const leadingSpaceLength = template.match(/^\s*/)[0].length;
warn = (msg, range, tip) => {
const data = { msg };
if (range) {
if (range.start != null) {
data.start = range.start + leadingSpaceLength;
}
if (range.end != null) {
data.end = range.end + leadingSpaceLength;
}
}
(tip ? tips : errors).push(data);
};
}
// merge custom modules
if (options.modules) {
finalOptions.modules =
(baseOptions.modules || []).concat(options.modules);
}
// merge custom directives
if (options.directives) {
finalOptions.directives = extend(
Object.create(baseOptions.directives || null),
options.directives
);
}
// copy other options
for (const key in options) {
if (key !== 'modules' && key !== 'directives') {
finalOptions[key] = options[key];
}
}
}
finalOptions.warn = warn;
const compiled = baseCompile(template.trim(), finalOptions);
{
detectErrors(compiled.ast, warn);
}
compiled.errors = errors;
compiled.tips = tips;
return compiled
}
return {
compile,
compileToFunctions: createCompileToFunctionFn(compile)
}
}
}
/* */
// `createCompilerCreator` allows creating compilers that use alternative
// parser/optimizer/codegen, e.g the SSR optimizing compiler.
// Here we just export a default compiler using the default parts.
const createCompiler = createCompilerCreator(function baseCompile (
template,
options
) {
const ast = parse(template.trim(), options);
if (options.optimize !== false) {
optimize(ast, options);
}
const code = generate(ast, options);
return {
ast,
render: code.render,
staticRenderFns: code.staticRenderFns
}
});
/* */
const { compile, compileToFunctions } = createCompiler(baseOptions);
/* */
// check whether current browser encodes a char inside attribute values
let div;
function getShouldDecode (href) {
div = div || document.createElement('div');
div.innerHTML = href ? `<a href="\n"/>` : `<div a="\n"/>`;
return div.innerHTML.indexOf('&#10;') > 0
}
// #3663: IE encodes newlines inside attribute values while other browsers don't
const shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false;
// #6828: chrome encodes content in a[href]
const shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false;
/* */
const idToTemplate = cached(id => {
const el = query(id);
return el && el.innerHTML
});
const mount = Vue.prototype.$mount;
Vue.prototype.$mount = function (
el,
hydrating
) {
el = el && query(el);
/* istanbul ignore if */
if (el === document.body || el === document.documentElement) {
warn(
`Do not mount Vue to <html> or <body> - mount to normal elements instead.`
);
return this
}
const options = this.$options;
// resolve template/el and convert to render function
if (!options.render) {
let template = options.template;
if (template) {
if (typeof template === 'string') {
if (template.charAt(0) === '#') {
template = idToTemplate(template);
/* istanbul ignore if */
if (!template) {
warn(
`Template element not found or is empty: ${options.template}`,
this
);
}
}
} else if (template.nodeType) {
template = template.innerHTML;
} else {
{
warn('invalid template option:' + template, this);
}
return this
}
} else if (el) {
template = getOuterHTML(el);
}
if (template) {
/* istanbul ignore if */
if (config.performance && mark) {
mark('compile');
}
const { render, staticRenderFns } = compileToFunctions(template, {
outputSourceRange: "development" !== 'production',
shouldDecodeNewlines,
shouldDecodeNewlinesForHref,
delimiters: options.delimiters,
comments: options.comments
}, this);
options.render = render;
options.staticRenderFns = staticRenderFns;
/* istanbul ignore if */
if (config.performance && mark) {
mark('compile end');
measure(`vue ${this._name} compile`, 'compile', 'compile end');
}
}
}
return mount.call(this, el, hydrating)
};
/**
* Get outerHTML of elements, taking care
* of SVG elements in IE as well.
*/
function getOuterHTML (el) {
if (el.outerHTML) {
return el.outerHTML
} else {
const container = document.createElement('div');
container.appendChild(el.cloneNode(true));
return container.innerHTML
}
}
Vue.compile = compileToFunctions;
export default Vue;