in views/vue.js [6:11516]
(function(global, factory) {
typeof exports === "object" && typeof module !== "undefined"
? (module.exports = factory())
: typeof define === "function" && define.amd
? define(factory)
: (global.Vue = factory());
})(this, function() {
"use strict";
/* */
const emptyObject = Object.freeze({});
// these helpers produces 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);
}
/**
* Convert a value to a string that is actually rendered.
*/
function toString(val) {
return val == null
? ""
: typeof val === "object"
? JSON.stringify(val, null, 2)
: String(val);
}
/**
* Convert a 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
? function(val) {
return map[val.toLowerCase()];
}
: function(val) {
return map[val];
};
}
/**
* Check if a tag is a built-in tag.
*/
const isBuiltInTag = makeMap("slot,component", true);
/**
* Check if a 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 the 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(function(str) {
return str.replace(camelizeRE, function(_, c) {
return c ? c.toUpperCase() : "";
});
});
/**
* Capitalize a string.
*/
const capitalize = cached(function(str) {
return str.charAt(0).toUpperCase() + str.slice(1);
});
/**
* Hyphenate a camelCase string.
*/
const hyphenateRE = /\B([A-Z])/g;
const hyphenate = cached(function(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 more performant in most browsers, but removing it would be breaking for
* code that was able to run in PhantomJS 1.x, so this must be kept for
* backwards compatibility.
*/
/* istanbul ignore next */
function polyfillBind(fn, ctx) {
function boundFn(a, ...args) {
const l = arguments.length;
return l ? (l > 1 ? fn.apply(ctx, args) : 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;
}
/**
* 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) {
// Do nothing.
}
/**
* Always return false.
*/
const no = function(a, b, c) {
return false;
};
/**
* Return same value
*/
const identity = function(_) {
return _;
};
/**
* Generate a static keys string from compiler modules.
*/
function genStaticKeys(modules) {
return modules
.reduce(function(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(function(e, i) {
return looseEqual(e, b[i]);
})
);
} else if (!isArrayA && !isArrayB) {
const keysA = Object.keys(a);
const keysB = Object.keys(b);
return (
keysA.length === keysB.length &&
keysA.every(function(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;
}
}
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(...args) {
if (!called) {
called = true;
fn.apply(this, args);
}
};
}
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"
];
/* */
const 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,
/**
* Exposed for legacy reasons
*/
_lifecycleHooks: LIFECYCLE_HOOKS
};
/* */
/**
* 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 = /[^\w.$]/;
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 isIOS =
(UA && /iphone|ipad|ipod|ios/.test(UA)) || weexPlatform === "ios";
const isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
// Firefox has a "watch" function on Object.prototype...
const nativeWatch = {}.watch;
let supportsPassive = false;
if (inBrowser) {
try {
const opts = {};
Object.defineProperty(opts, "passive", {
// eslint-disable-next-line getter-return
get: function get() {
/* istanbul ignore next */
supportsPassive = true;
}
}); // https://github.com/facebook/flow/issues/285
window.addEventListener("test-passive", null, opts);
} catch (e) {
// Ignore error.
}
}
// this needs to be lazy-evaled because vue may be required before
// vue-server-renderer can set VUE_ENV
let _isServer;
const isServerRendering = function() {
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"].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; // $flow-disable-line
/* istanbul ignore if */ if (typeof Set !== "undefined" && isNative(Set)) {
// use native Set when available.
_Set = Set;
} else {
// a non-standard Set polyfill that only works with primitive keys.
_Set = (function() {
function Set() {
this.set = Object.create(null);
}
Set.prototype.has = function has(key) {
return this.set[key] === true;
};
Set.prototype.add = function add(key) {
this.set[key] = true;
};
Set.prototype.clear = function clear() {
this.set = Object.create(null);
};
return Set;
})();
}
/* */
let warn = noop;
let tip = noop;
let generateComponentTrace = noop; // work around flow check
let formatComponentName = noop;
{
const hasConsole = typeof console !== "undefined";
const classifyRE = /(?:^|[-_])(\w)/g;
const classify = function(str) {
return str
.replace(classifyRE, function(c) {
return c.toUpperCase();
})
.replace(/[-_]/g, "");
};
warn = function(msg, vm) {
const trace = vm ? generateComponentTrace(vm) : "";
if (config.warnHandler) {
config.warnHandler.call(null, msg, vm, trace);
} else if (hasConsole && !config.silent) {
console.error("[Vue warn]: " + msg + trace);
}
};
tip = function(msg, vm) {
if (hasConsole && !config.silent) {
console.warn(
"[Vue tip]: " + msg + (vm ? generateComponentTrace(vm) : "")
);
}
};
formatComponentName = function(vm, includeFile) {
if (vm.$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 = function(str, n) {
let res = "";
while (n) {
if (n % 2 === 1) {
res += str;
}
if (n > 1) {
str += str;
}
n >>= 1;
}
return res;
};
generateComponentTrace = function(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(function(vm, i) {
return (
"" +
(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.
*/
const Dep = function Dep() {
this.id = uid++;
this.subs = [];
};
Dep.prototype.addSub = function addSub(sub) {
this.subs.push(sub);
};
Dep.prototype.removeSub = function removeSub(sub) {
remove(this.subs, sub);
};
Dep.prototype.depend = function depend() {
if (Dep.target) {
Dep.target.addDep(this);
}
};
Dep.prototype.notify = function notify() {
// stabilize the subscriber list first
const subs = this.subs.slice();
for (let i = 0, l = subs.length; i < l; i++) {
subs[i].update();
}
};
// the current target watcher being evaluated.
// this is globally unique because there could be only one
// watcher being evaluated at any time.
Dep.target = null;
const targetStack = [];
function pushTarget(_target) {
if (Dep.target) {
targetStack.push(Dep.target);
}
Dep.target = _target;
}
function popTarget() {
Dep.target = targetStack.pop();
}
/* */
const VNode = function VNode(
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;
};
const prototypeAccessors = { child: { configurable: true } };
// DEPRECATED: alias for componentInstance for backwards compat.
/* istanbul ignore next */
prototypeAccessors.child.get = function() {
return this.componentInstance;
};
Object.defineProperties(VNode.prototype, prototypeAccessors);
const createEmptyVNode = function(text) {
if (text === void 0) 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,
vnode.children,
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.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(...additionalArgs) {
const args = [];
let len = additionalArgs.length;
while (len--) args[len] = additionalArgs[len];
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.
*/
const Observer = function Observer(value) {
this.value = value;
this.dep = new Dep();
this.vmCount = 0;
def(value, "__ob__", this);
if (Array.isArray(value)) {
const augment = hasProto ? protoAugment : copyAugment;
augment(value, arrayMethods, arrayKeys);
this.observeArray(value);
} else {
this.walk(value);
}
};
/**
* Walk through each property and convert them into
* getter/setters. This method should only be called when
* value type is Object.
*/
Observer.prototype.walk = function walk(obj) {
const keys = Object.keys(obj);
for (let i = 0; i < keys.length; i++) {
defineReactive(obj, keys[i]);
}
};
/**
* Observe a list of Array items.
*/
Observer.prototype.observeArray = function observeArray(items) {
for (let i = 0, l = items.length; i < l; i++) {
observe(items[i]);
}
};
// helpers
/**
* Augment an target Object or Array by intercepting
* the prototype chain using __proto__
*/
function protoAugment(target, src, keys) {
/* eslint-disable no-proto */
target.__proto__ = src;
/* eslint-enable no-proto */
}
/**
* Augment an 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(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;
if (!getter && arguments.length === 2) {
val = obj[key];
}
const setter = property && property.set;
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 ("development" !== "production" && customSetter) {
customSetter();
}
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 (
"development" !== "production" &&
(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)) {
"development" !== "production" &&
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(ob.value, key, val);
ob.dep.notify();
return val;
}
/**
* Delete a property and trigger change if necessary.
*/
function del(target, key) {
if (
"development" !== "production" &&
(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)) {
"development" !== "production" &&
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 = void 0, 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 = Object.keys(from);
for (let i = 0; i < keys.length; i++) {
key = keys[i];
toVal = to[key];
fromVal = from[key];
if (!hasOwn(to, key)) {
set(to, key, fromVal);
} else if (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") {
"development" !== "production" &&
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) {
return childVal
? parentVal
? parentVal.concat(childVal)
: Array.isArray(childVal)
? childVal
: [childVal]
: parentVal;
}
LIFECYCLE_HOOKS.forEach(function(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) {
"development" !== "production" && 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$1 in childVal) {
let parent = ret[key$1];
const child = childVal[key$1];
if (parent && !Array.isArray(parent)) {
parent = [parent];
}
ret[key$1] = parent
? parent.concat(child)
: Array.isArray(child)
? child
: [child];
}
return ret;
};
/**
* Other object hashes.
*/
strats.props = strats.methods = strats.inject = strats.computed = function(
parentVal,
childVal,
vm,
key
) {
if (childVal && "development" !== "production") {
assertObjectType(key, childVal, vm);
}
if (!parentVal) {
return childVal;
}
const ret = Object.create(null);
extend(ret, parentVal);
if (childVal) {
extend(ret, childVal);
}
return ret;
};
strats.provide = mergeDataOrFn;
/**
* Default strategy.
*/
const defaultStrat = function(parentVal, childVal) {
return childVal === undefined ? parentVal : childVal;
};
/**
* Validate component names
*/
function checkComponents(options) {
for (const key in options.components) {
validateComponentName(key);
}
}
function validateComponentName(name) {
if (!/^[a-zA-Z][\w-]*$/.test(name)) {
warn(
'Invalid component name: "' +
name +
'". Component names ' +
"can only contain alphanumeric characters and the hyphen, " +
"and must start with a letter."
);
}
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 = dirs[key];
if (typeof def === "function") {
dirs[key] = { bind: def, update: def };
}
}
}
}
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);
const extendsFrom = child.extends;
if (extendsFrom) {
parent = mergeOptions(parent, extendsFrom, 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 ("development" !== "production" && 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 ("development" !== "production" && 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(
'Invalid prop: type check failed for prop "' +
name +
'".' +
" Expected " +
expectedTypes.map(capitalize).join(", ") +
", got " +
toRawType(value) +
".",
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)$/;
function assertType(value, type) {
let valid;
const expectedType = getType(type);
if (simpleCheckRE.test(expectedType)) {
const t = typeof value;
valid = t === expectedType.toLowerCase();
// for primitive wrapper objects
if (!valid && t === "object") {
valid = value instanceof type;
}
} else if (expectedType === "Object") {
valid = isPlainObject(value);
} else if (expectedType === "Array") {
valid = Array.isArray(value);
} else {
valid = value instanceof type;
}
return {
valid: valid,
expectedType: expectedType
};
}
/**
* Use function string name to check built-in types,
* because a simple equality check will fail when running
* across different vms / iframes.
*/
function getType(fn) {
const match = fn && fn.toString().match(/^\s*function (\w+)/);
return match ? match[1] : "";
}
function isSameType(a, b) {
return getType(a) === getType(b);
}
function getTypeIndex(type, expectedTypes) {
if (!Array.isArray(expectedTypes)) {
return isSameType(expectedTypes, type) ? 0 : -1;
}
for (let i = 0, len = expectedTypes.length; i < len; i++) {
if (isSameType(expectedTypes[i], type)) {
return i;
}
}
return -1;
}
/* */
function handleError(err, vm, info) {
if (vm) {
let cur = vm;
while ((cur = cur.$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);
}
function globalHandleError(err, vm, info) {
if (config.errorHandler) {
try {
return config.errorHandler.call(null, err, vm, info);
} catch (e) {
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;
}
}
/* */
/* globals MessageChannel */
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 both microtasks and (macro) tasks.
// In < 2.4 we used microtasks everywhere, but there are some scenarios where
// microtasks have too high a priority and fire in between supposedly
// sequential events (e.g. #4521, #6690) or even between bubbling of the same
// event (#6566). However, using (macro) tasks everywhere also has subtle problems
// when state is changed right before repaint (e.g. #6813, out-in transitions).
// Here we use microtask by default, but expose a way to force (macro) task when
// needed (e.g. in event handlers attached by v-on).
let microTimerFunc;
let macroTimerFunc;
let useMacroTask = false;
// Determine (macro) task defer implementation.
// Technically setImmediate should be the ideal choice, but it's only available
// in IE. The only polyfill that consistently queues the callback after all DOM
// events triggered in the same loop is by using MessageChannel.
/* istanbul ignore if */
if (typeof setImmediate !== "undefined" && isNative(setImmediate)) {
macroTimerFunc = function() {
setImmediate(flushCallbacks);
};
} else if (
typeof MessageChannel !== "undefined" &&
(isNative(MessageChannel) ||
// PhantomJS
MessageChannel.toString() === "[object MessageChannelConstructor]")
) {
const channel = new MessageChannel();
const port = channel.port2;
channel.port1.onmessage = flushCallbacks;
macroTimerFunc = function() {
port.postMessage(1);
};
} else {
/* istanbul ignore next */
macroTimerFunc = function() {
setTimeout(flushCallbacks, 0);
};
}
// Determine microtask defer implementation.
/* istanbul ignore next, $flow-disable-line */
if (typeof Promise !== "undefined" && isNative(Promise)) {
const p = Promise.resolve();
microTimerFunc = function() {
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);
}
};
} else {
// fallback to macro
microTimerFunc = macroTimerFunc;
}
/**
* Wrap a function so that if any code inside triggers state change,
* the changes are queued using a (macro) task instead of a microtask.
*/
function withMacroTask(fn) {
return (
fn._withTask ||
(fn._withTask = function() {
useMacroTask = true;
const res = fn.apply(null, arguments);
useMacroTask = false;
return res;
})
);
}
function nextTick(cb, ctx) {
let _resolve;
callbacks.push(function() {
if (cb) {
try {
cb.call(ctx);
} catch (e) {
handleError(e, ctx, "nextTick");
}
} else if (_resolve) {
_resolve(ctx);
}
});
if (!pending) {
pending = true;
if (useMacroTask) {
macroTimerFunc();
} else {
microTimerFunc();
}
}
// $flow-disable-line
if (!cb && typeof Promise !== "undefined") {
return new Promise(function(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 = function(tag) {
return perf.mark(tag);
};
measure = function(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 = function(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 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: function 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: function has(target, key) {
const has = key in target;
const isAllowed = allowedGlobals(key) || key.charAt(0) === "_";
if (!has && !isAllowed) {
warnNonPresent(target, key);
}
return has || !isAllowed;
}
};
const getHandler = {
get: function get(target, key) {
if (typeof key === "string" && !(key in target)) {
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(function(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: name,
once: once$$1,
capture: capture,
passive: passive
};
});
function createFnInvoker(fns) {
function invoker() {
const arguments$1 = arguments;
const fns = invoker.fns;
if (Array.isArray(fns)) {
const cloned = fns.slice();
for (let i = 0; i < cloned.length; i++) {
cloned[i].apply(null, arguments$1);
}
} else {
// return handler return value for single handlers
return fns.apply(null, arguments);
}
}
invoker.fns = fns;
return invoker;
}
function updateListeners(on, oldOn, add, remove$$1, vm) {
let name, def, cur, old, event;
for (name in on) {
def = cur = on[name];
old = oldOn[name];
event = normalizeEvent(name);
/* istanbul ignore if */
if (isUndef(cur)) {
"development" !== "production" &&
warn(
'Invalid handler for event "' +
event.name +
'": got ' +
String(cur),
vm
);
} else if (isUndef(old)) {
if (isUndef(cur.fns)) {
cur = on[name] = createFnInvoker(cur);
}
add(
event.name,
cur,
event.once,
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 = data.attrs;
const props = data.props;
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 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: data,
context: context,
children: children,
tag: tag
};
return node;
}
function resolveAsyncComponent(factory, baseCtor, context) {
if (isTrue(factory.error) && isDef(factory.errorComp)) {
return factory.errorComp;
}
if (isDef(factory.resolved)) {
return factory.resolved;
}
if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
return factory.loadingComp;
}
if (isDef(factory.contexts)) {
// already pending
factory.contexts.push(context);
} else {
const contexts = (factory.contexts = [context]);
let sync = true;
const forceRender = function() {
for (let i = 0, l = contexts.length; i < l; i++) {
contexts[i].$forceUpdate();
}
};
const resolve = once(function(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();
}
});
const reject = once(function(reason) {
"development" !== "production" &&
warn(
"Failed to resolve async component: " +
String(factory) +
(reason ? "\nReason: " + reason : "")
);
if (isDef(factory.errorComp)) {
factory.error = true;
forceRender();
}
});
const res = factory(resolve, reject);
if (isObject(res)) {
if (typeof res.then === "function") {
// () => Promise
if (isUndef(factory.resolved)) {
res.then(resolve, reject);
}
} else if (
isDef(res.component) &&
typeof res.component.then === "function"
) {
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 {
setTimeout(function() {
if (isUndef(factory.resolved) && isUndef(factory.error)) {
factory.loading = true;
forceRender();
}
}, res.delay || 200);
}
}
if (isDef(res.timeout)) {
setTimeout(function() {
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, once) {
if (once) {
target.$once(event, fn);
} else {
target.$on(event, fn);
}
}
function remove$1(event, fn) {
target.$off(event, fn);
}
function updateComponentListeners(vm, listeners, oldListeners) {
target = vm;
updateListeners(listeners, oldListeners || {}, add, remove$1, vm);
target = undefined;
}
function eventsMixin(Vue) {
const hookRE = /^hook:/;
Vue.prototype.$on = function(event, fn) {
const this$1 = this;
const vm = this;
if (Array.isArray(event)) {
for (let i = 0, l = event.length; i < l; i++) {
this$1.$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 this$1 = this;
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++) {
this$1.$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;
}
if (fn) {
// specific handler
let cb;
let i$1 = cbs.length;
while (i$1--) {
cb = cbs[i$1];
if (cb === fn || cb.fn === fn) {
cbs.splice(i$1, 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);
for (let i = 0, l = cbs.length; i < l; i++) {
try {
cbs[i].apply(vm, args);
} catch (e) {
handleError(e, vm, 'event handler for "' + event + '"');
}
}
}
return vm;
};
}
/* */
/**
* Runtime helper for resolving raw children VNodes into a slot object.
*/
function resolveSlots(children, context) {
const slots = {};
if (!children) {
return 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$1 in slots) {
if (slots[name$1].every(isWhitespace)) {
delete slots[name$1];
}
}
return slots;
}
function isWhitespace(node) {
return (node.isComment && !node.asyncFactory) || node.text === " ";
}
function resolveScopedSlots(
fns, // see flow/vnode
res
) {
res = res || {};
for (let i = 0; i < fns.length; i++) {
if (Array.isArray(fns[i])) {
resolveScopedSlots(fns[i], res);
} else {
res[fns[i].key] = fns[i].fn;
}
}
return res;
}
/* */
let activeInstance = null;
let isUpdatingChildComponent = false;
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;
if (vm._isMounted) {
callHook(vm, "beforeUpdate");
}
const prevEl = vm.$el;
const prevVnode = vm._vnode;
const prevActiveInstance = activeInstance;
activeInstance = 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 */,
vm.$options._parentElm,
vm.$options._refElm
);
// no need for the ref nodes after initial patch
// this prevents keeping a detached DOM tree in memory (#5851)
vm.$options._parentElm = vm.$options._refElm = null;
} else {
// updates
vm.$el = vm.__patch__(prevVnode, vnode);
}
activeInstance = prevActiveInstance;
// 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 ("development" !== "production" && config.performance && mark) {
updateComponent = function() {
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 = function() {
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, null, 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
const hasChildren = !!(
(
renderChildren || // has new static slots
vm.$options._renderChildren || // has old static slots
parentVnode.data.scopedSlots || // has new scoped slots
vm.$scopedSlots !== emptyObject
) // has old scoped slots
);
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 (hasChildren) {
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];
if (handlers) {
for (let i = 0, j = handlers.length; i < j; i++) {
try {
handlers[i].call(vm);
} catch (e) {
handleError(e, vm, hook + " hook");
}
}
}
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;
}
/**
* Flush both queues and run the watchers.
*/
function flushSchedulerQueue() {
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(function(a, b) {
return 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];
id = watcher.id;
has[id] = null;
watcher.run();
// in dev build, check and stop circular updates.
if ("development" !== "production" && 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) {
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;
nextTick(flushSchedulerQueue);
}
}
}
/* */
let uid$1 = 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.
*/
var Watcher = function Watcher(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;
} else {
this.deep = this.user = this.lazy = this.sync = false;
}
this.cb = cb;
this.id = ++uid$1; // 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 = function() {};
"development" !== "production" &&
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.
*/
Watcher.prototype.get = function 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.
*/
Watcher.prototype.addDep = function 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.
*/
Watcher.prototype.cleanupDeps = function cleanupDeps() {
const this$1 = this;
let i = this.deps.length;
while (i--) {
const dep = this$1.deps[i];
if (!this$1.newDepIds.has(dep.id)) {
dep.removeSub(this$1);
}
}
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.
*/
Watcher.prototype.update = function 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.
*/
Watcher.prototype.run = function 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.
*/
Watcher.prototype.evaluate = function evaluate() {
this.value = this.get();
this.dirty = false;
};
/**
* Depend on all deps collected by this watcher.
*/
Watcher.prototype.depend = function depend() {
const this$1 = this;
let i = this.deps.length;
while (i--) {
this$1.deps[i].depend();
}
};
/**
* Remove self from all dependencies' subscriber list.
*/
Watcher.prototype.teardown = function teardown() {
const this$1 = this;
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$1.deps[i].removeSub(this$1);
}
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);
}
const loop = function(key) {
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(props, key, value, function() {
if (vm.$parent && !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);
}
};
for (const key in propsOptions) loop(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 = {};
"development" !== "production" &&
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)) {
"development" !== "production" &&
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 ("development" !== "production" && 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)
: userDef;
sharedPropertyDefinition.set = noop;
} else {
sharedPropertyDefinition.get = userDef.get
? shouldCache && userDef.cache !== false
? createComputedGetter(key)
: userDef.get
: noop;
sharedPropertyDefinition.set = userDef.set ? userDef.set : noop;
}
if (
"development" !== "production" &&
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 initMethods(vm, methods) {
const props = vm.$options.props;
for (const key in methods) {
{
if (methods[key] == null) {
warn(
'Method "' +
key +
'" has an undefined value 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] = methods[key] == null ? 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(newData) {
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) {
cb.call(vm, watcher.value);
}
return function unwatchFn() {
watcher.teardown();
};
};
}
/* */
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(function(key) {
/* istanbul ignore else */
{
defineReactive(vm, key, result[key], function() {
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).filter(function(key) {
/* istanbul ignore next */
return Object.getOwnPropertyDescriptor(inject, key).enumerable;
})
: Object.keys(inject);
for (let i = 0; i < keys.length; i++) {
const key = keys[i];
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 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)) {
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._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 ("development" !== "production" && !isObject(bindObject)) {
warn("slot v-bind without argument expects an Object", this);
}
props = extend(extend({}, bindObject), props);
}
nodes = scopedSlotFn(props) || fallback;
} else {
const slotNodes = this.$slots[name];
// warn duplicate slot usage
if (slotNodes) {
if ("development" !== "production" && slotNodes._rendered) {
warn(
'Duplicate presence of slot "' +
name +
'" found in the same render tree ' +
"- this will likely cause render errors.",
this
);
}
slotNodes._rendered = true;
}
nodes = slotNodes || 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)) {
"development" !== "production" &&
warn(
"v-bind without argument expects an Object or Array value",
this
);
} else {
if (Array.isArray(value)) {
value = toObject(value);
}
let hash;
const loop = function(key) {
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 = {});
}
if (!(key in hash)) {
hash[key] = value[key];
if (isSync) {
const on = data.on || (data.on = {});
on["update:" + key] = function($event) {
value[key] = $event;
};
}
}
};
for (const key in value) loop(key);
}
}
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)) {
"development" !== "production" &&
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 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;
}
/* */
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 = function() {
return resolveSlots(children, parent);
};
// 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 = data.scopedSlots || emptyObject;
}
if (options._scopeId) {
this._c = function(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 = function(a, b, c, d) {
return 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
);
} 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
);
}
return res;
}
}
function cloneAndMarkFunctionalResult(vnode, data, contextVm, options) {
// #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;
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];
}
}
/* */
// Register the component hook to weex native render engine.
// The hook will be triggered by native, not javascript.
// Updates the state of the component to weex native render engine.
/* */
// https://github.com/Hanks10100/weex-native-directive/tree/master/component
// listening on native callback
/* */
/* */
// inline hooks to be invoked on component VNodes during patch
var componentVNodeHooks = {
init: function init(vnode, hydrating, parentElm, refElm) {
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,
parentElm,
refElm
));
child.$mount(hydrating ? vnode.elm : undefined, hydrating);
}
},
prepatch: function 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: function insert(vnode) {
const context = vnode.context;
const componentInstance = vnode.componentInstance;
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: function destroy(vnode) {
const componentInstance = vnode.componentInstance;
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, context);
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: Ctor,
propsData: propsData,
listeners: listeners,
tag: tag,
children: children
},
asyncFactory
);
// Weex specific: invoke recycle-list optimized @render function for
// extracting cell-slot template.
// https://github.com/Hanks10100/weex-native-directive/tree/master/component
/* istanbul ignore if */
return vnode;
}
function createComponentInstanceForVnode(
vnode, // we know it's MountedComponentVNode but flow doesn't
parent, // activeInstance in lifecycle state
parentElm,
refElm
) {
const options = {
_isComponent: true,
parent: parent,
_parentVnode: vnode,
_parentElm: parentElm || null,
_refElm: refElm || null
};
// 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];
hooks[key] = componentVNodeHooks[key];
}
}
// 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.props || (data.props = {}))[prop] = data.model.value;
const on = data.on || (data.on = {});
if (isDef(on[event])) {
on[event] = [data.model.callback].concat(on[event]);
} else {
on[event] = data.model.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__)) {
"development" !== "production" &&
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 (
"development" !== "production" &&
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
vnode = new VNode(
config.parsePlatformTagName(tag),
data,
children,
undefined,
undefined,
context
);
} else if (
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 = function(a, b, c, d) {
return createElement(vm, a, b, c, d, false);
};
// normalization is always applied for the public version, used in
// user-written render functions.
vm.$createElement = function(a, b, c, d) {
return 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(
vm,
"$attrs",
(parentData && parentData.attrs) || emptyObject,
function() {
!isUpdatingChildComponent && warn("$attrs is readonly.", vm);
},
true
);
defineReactive(
vm,
"$listeners",
options._parentListeners || emptyObject,
function() {
!isUpdatingChildComponent && warn("$listeners is readonly.", vm);
},
true
);
}
}
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 ref = vm.$options;
const render = ref.render;
const _parentVnode = ref._parentVnode;
// reset _rendered flag on slots for duplicate slot check
{
for (const key in vm.$slots) {
// $flow-disable-line
vm.$slots[key]._rendered = false;
}
}
if (_parentVnode) {
vm.$scopedSlots = _parentVnode.data.scopedSlots || emptyObject;
}
// 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 {
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;
}
}
}
// return empty vnode in case the render function errored out
if (!(vnode instanceof VNode)) {
if ("development" !== "production" && 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;
};
}
/* */
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 ("development" !== "production" && 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 ("development" !== "production" && 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;
opts._parentElm = options._parentElm;
opts._refElm = options._refElm;
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 extended = Ctor.extendOptions;
const sealed = Ctor.sealedOptions;
for (const key in latest) {
if (latest[key] !== sealed[key]) {
if (!modified) {
modified = {};
}
modified[key] = dedupe(latest[key], extended[key], sealed[key]);
}
}
return modified;
}
function dedupe(latest, extended, sealed) {
// compare latest and sealed to ensure lifecycle hooks won't be duplicated
// between merges
if (Array.isArray(latest)) {
const res = [];
sealed = Array.isArray(sealed) ? sealed : [sealed];
extended = Array.isArray(extended) ? extended : [extended];
for (let i = 0; i < latest.length; i++) {
// push original options and not sealed options to exclude duplicated options
if (extended.indexOf(latest[i]) >= 0 || sealed.indexOf(latest[i]) < 0) {
res.push(latest[i]);
}
}
return res;
} else {
return latest;
}
}
function Vue(options) {
if ("development" !== "production" && !(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 ("development" !== "production" && 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(function(type) {
Vue[type] = function(id, definition) {
if (!definition) {
return this.options[type + "s"][id];
} else {
/* istanbul ignore if */
if ("development" !== "production" && 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 = keepAliveInstance.cache;
const keys = keepAliveInstance.keys;
const _vnode = keepAliveInstance._vnode;
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];
const KeepAlive = {
name: "keep-alive",
abstract: true,
props: {
include: patternTypes,
exclude: patternTypes,
max: [String, Number]
},
created: function created() {
this.cache = Object.create(null);
this.keys = [];
},
destroyed: function destroyed() {
const this$1 = this;
for (const key in this$1.cache) {
pruneCacheEntry(this$1.cache, key, this$1.keys);
}
},
mounted: function mounted() {
const this$1 = this;
this.$watch("include", function(val) {
pruneCache(this$1, function(name) {
return matches(val, name);
});
});
this.$watch("exclude", function(val) {
pruneCache(this$1, function(name) {
return !matches(val, name);
});
});
},
render: function render() {
const slot = this.$slots.default;
const vnode = getFirstComponentChild(slot);
const componentOptions = vnode && vnode.componentOptions;
if (componentOptions) {
// check pattern
const name = getComponentName(componentOptions);
const ref = this;
const include = ref.include;
const exclude = ref.exclude;
if (
// not included
(include && (!name || !matches(include, name))) ||
// excluded
(exclude && name && matches(exclude, name))
) {
return vnode;
}
const ref$1 = this;
const cache = ref$1.cache;
const keys = ref$1.keys;
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]);
}
};
const builtInComponents = {
KeepAlive: KeepAlive
};
/* */
function initGlobalAPI(Vue) {
// config
const configDef = {};
configDef.get = function() {
return config;
};
{
configDef.set = function() {
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: warn,
extend: extend,
mergeOptions: mergeOptions,
defineReactive: defineReactive
};
Vue.set = set;
Vue.delete = del;
Vue.nextTick = nextTick;
Vue.options = Object.create(null);
ASSET_TYPES.forEach(function(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: function 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 = "2.5.16";
/* */
// 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 = function(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 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 = function(name) {
return name.charAt(5) === ":" && name.slice(0, 5) === "xlink";
};
const getXlinkProp = function(name) {
return isXlink(name) ? name.slice(6, name.length) : "";
};
const isFalsyAttrValue = function(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 = function(tag) {
return tag === "pre";
};
const isReservedTag = function(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) {
"development" !== "production" && 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, "");
}
const nodeOps = 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
});
/* */
const ref = {
create: function create(_, vnode) {
registerRef(vnode);
},
update: function update(oldVnode, vnode) {
if (oldVnode.data.ref !== vnode.data.ref) {
registerRef(oldVnode, true);
registerRef(vnode);
}
},
destroy: function 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 = backend.modules;
const nodeOps = backend.nodeOps;
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() {
if (--remove.listeners === 0) {
removeNode(childElm);
}
}
remove.listeners = listeners;
return remove;
}
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(function(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 ("development" !== "production" && 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 */, parentElm, refElm);
}
// 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);
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$$1)) {
if (ref$$1.parentNode === 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$1 = 0; i$1 < cbs.create.length; ++i$1) {
cbs.create[i$1](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(parentElm, 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);
oldStartVnode = oldCh[++oldStartIdx];
newStartVnode = newCh[++newStartIdx];
} else if (sameVnode(oldEndVnode, newEndVnode)) {
patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue);
oldEndVnode = oldCh[--oldEndIdx];
newEndVnode = newCh[--newEndIdx];
} else if (sameVnode(oldStartVnode, newEndVnode)) {
// Vnode moved right
patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue);
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);
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);
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(parentElm, 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, removeOnly) {
if (oldVnode === vnode) {
return;
}
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)) {
if (isDef(oldVnode.text)) {
nodeOps.setTextContent(elm, "");
}
addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
} else if (isDef(oldCh)) {
removeVnodes(elm, 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 = vnode.tag;
const data = vnode.data;
const children = vnode.children;
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 (
"development" !== "production" &&
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$1 = 0; i$1 < children.length; i$1++) {
if (
!childNode ||
!hydrate(childNode, children[i$1], 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 (
"development" !== "production" &&
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,
parentElm,
refElm
) {
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, parentElm, refElm);
} else {
const isRealElement = isDef(oldVnode.nodeType);
if (!isRealElement && sameVnode(oldVnode, vnode)) {
// patch existing root node
patchVnode(oldVnode, vnode, insertedVnodeQueue, 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$1 = 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$1,
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$1 = 0; i$1 < cbs.create.length; ++i$1) {
cbs.create[i$1](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$2 = 1; i$2 < insert.fns.length; i$2++) {
insert.fns[i$2]();
}
}
} else {
registerRef(ancestor);
}
ancestor = ancestor.parent;
}
}
// destroy old node
if (isDef(parentElm$1)) {
removeVnodes(parentElm$1, [oldVnode], 0, 0);
} else if (isDef(oldVnode.tag)) {
invokeDestroyHook(oldVnode);
}
}
}
invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
return vnode.elm;
};
}
/* */
const 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;
callHook$1(dir, "update", vnode, oldVnode);
if (dir.def && dir.def.componentUpdated) {
dirsWithPostpatch.push(dir);
}
}
}
if (dirsWithInsert.length) {
const callInsert = function() {
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", function() {
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"
);
}
}
}
const 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,
isFalsyAttrValue(value) || value === "false" ? "false" : "true"
);
} 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" &&
!el.__ieph
) {
var blocker = function(e) {
e.stopImmediatePropagation();
el.removeEventListener("input", blocker);
};
el.addEventListener("input", blocker);
// $flow-disable-line
el.__ieph = true; /* IE placeholder patched */
}
el.setAttribute(key, value);
}
}
const attrs = {
create: updateAttrs,
update: updateAttrs
};
/* */
function updateClass(oldVnode, vnode) {
const el = vnode.elm;
const data = vnode.data;
const oldData = oldVnode.data;
if (
isUndef(data.staticClass) &&
isUndef(data.class) &&
(isUndef(oldData) ||
(isUndef(oldData.staticClass) && isUndef(oldData.class)))
) {
return;
}
let cls = genClassForVnode(vnode);
// handle transition classes
const transitionClass = el._transitionClasses;
if (isDef(transitionClass)) {
cls = concat(cls, stringifyClass(transitionClass));
}
// set the class
if (cls !== el._prevClass) {
el.setAttribute("class", cls);
el._prevClass = cls;
}
}
const klass = {
create: updateClass,
update: updateClass
};
/* */
const validDivisionCharRE = /[\w).+\-_$\]]/;
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 = void 0;
// 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);
}
}
/* */
function baseWarn(msg) {
console.error("[Vue compiler]: " + msg);
}
function pluckModuleFunction(modules, key) {
return modules
? modules
.map(function(m) {
return m[key];
})
.filter(function(_) {
return _;
})
: [];
}
function addProp(el, name, value) {
(el.props || (el.props = [])).push({ name: name, value: value });
el.plain = false;
}
function addAttr(el, name, value) {
(el.attrs || (el.attrs = [])).push({ name: name, value: value });
el.plain = false;
}
// add a raw attr (use this in preTransforms)
function addRawAttr(el, name, value) {
el.attrsMap[name] = value;
el.attrsList.push({ name: name, value: value });
}
function addDirective(el, name, rawName, value, arg, modifiers) {
(el.directives || (el.directives = [])).push({
name: name,
rawName: rawName,
value: value,
arg: arg,
modifiers: modifiers
});
el.plain = false;
}
function addHandler(el, name, value, modifiers, important, warn) {
modifiers = modifiers || emptyObject;
// warn prevent and passive modifier
/* istanbul ignore if */
if (
"development" !== "production" &&
warn &&
modifiers.prevent &&
modifiers.passive
) {
warn(
"passive and prevent can't be used together. " +
"Passive handler can't prevent default event."
);
}
// check capture modifier
if (modifiers.capture) {
delete modifiers.capture;
name = "!" + name; // mark the event as captured
}
if (modifiers.once) {
delete modifiers.once;
name = "~" + name; // mark the event as once
}
/* istanbul ignore if */
if (modifiers.passive) {
delete modifiers.passive;
name = "&" + name; // mark the event as passive
}
// 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 (name === "click") {
if (modifiers.right) {
name = "contextmenu";
delete modifiers.right;
} else if (modifiers.middle) {
name = "mouseup";
}
}
let events;
if (modifiers.native) {
delete modifiers.native;
events = el.nativeEvents || (el.nativeEvents = {});
} else {
events = el.events || (el.events = {});
}
const newHandler = {
value: value.trim()
};
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 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;
}
/* */
/**
* Cross-platform code generation for component v-model
*/
function genComponentModel(el, value, modifiers) {
const ref = modifiers || {};
const number = ref.number;
const trim = ref.trim;
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: '"' + 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;
let str;
let chr;
let index$1;
let expressionPos;
let 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."
);
}
}
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."
);
}
// 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$1 = el.attrsMap["v-bind:value"] || el.attrsMap[":value"];
const typeBinding = el.attrsMap["v-bind:type"] || el.attrsMap[":type"];
if (value$1 && !typeBinding) {
const binding = el.attrsMap["v-bind:value"] ? "v-bind:value" : ":value";
warn$1(
binding +
'="' +
value$1 +
'" conflicts with v-model on the same element ' +
"because the latter already expands to a value binding internally"
);
}
}
const ref = modifiers || {};
const lazy = ref.lazy;
const number = ref.number;
const trim = ref.trim;
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(handler, event, 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);
}
};
}
function add$1(event, handler, once$$1, capture, passive) {
handler = withMacroTask(handler);
if (once$$1) {
handler = createOnceHandler(handler, event, capture);
}
target$1.addEventListener(
event,
handler,
supportsPassive ? { capture: capture, passive: passive } : capture
);
}
function remove$2(event, handler, capture, _target) {
(_target || target$1).removeEventListener(
event,
handler._withTask || 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, vnode.context);
target$1 = undefined;
}
const events = {
create: updateDOMListeners,
update: updateDOMListeners
};
/* */
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 (isUndef(props[key])) {
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") {
// 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 {
elm[key] = cur;
}
}
}
// 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.lazy) {
// inputs with lazy should only be updated when not in focus
return false;
}
if (modifiers.number) {
return toNumber(value) !== toNumber(newVal);
}
if (modifiers.trim) {
return value.trim() !== newVal.trim();
}
}
return value !== newVal;
}
const 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 = function(el, name, val) {
/* istanbul ignore if */
if (cssVarRE.test(name)) {
el.style.setProperty(name, val);
} else if (importantRE.test(val)) {
el.style.setProperty(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;
var 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);
}
}
}
const style = {
create: updateStyle,
update: updateStyle
};
/* */
/**
* 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(/\s+/).forEach(function(c) {
return 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(/\s+/).forEach(function(c) {
return 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) {
if (!def) {
return;
}
/* istanbul ignore else */
if (typeof def === "object") {
const res = {};
if (def.css !== false) {
extend(res, autoCssTransition(def.name || "v"));
}
extend(res, def);
return res;
} else if (typeof def === "string") {
return autoCssTransition(def);
}
}
var autoCssTransition = cached(function(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 */ function(fn) {
return fn();
};
function nextFrame(fn) {
raf(function() {
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 ref = getTransitionInfo(el, expectedType);
const type = ref.type;
const timeout = ref.timeout;
const propCount = ref.propCount;
if (!type) {
return cb();
}
const event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
let ended = 0;
const end = function() {
el.removeEventListener(event, onEnd);
cb();
};
var onEnd = function(e) {
if (e.target === el) {
if (++ended >= propCount) {
end();
}
}
};
setTimeout(function() {
if (ended < propCount) {
end();
}
}, timeout + 1);
el.addEventListener(event, onEnd);
}
const transformRE = /\b(transform|all)(,|$)/;
function getTransitionInfo(el, expectedType) {
const styles = window.getComputedStyle(el);
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: type,
timeout: timeout,
propCount: propCount,
hasTransform: hasTransform
};
}
function getTimeout(delays, durations) {
/* istanbul ignore next */
while (delays.length < durations.length) {
delays = delays.concat(delays);
}
return Math.max.apply(
null,
durations.map(function(d, i) {
return toMs(d) + toMs(delays[i]);
})
);
}
function toMs(s) {
return Number(s.slice(0, -1)) * 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 = data.css;
const type = data.type;
const enterClass = data.enterClass;
const enterToClass = data.enterToClass;
const enterActiveClass = data.enterActiveClass;
const appearClass = data.appearClass;
const appearToClass = data.appearToClass;
const appearActiveClass = data.appearActiveClass;
const beforeEnter = data.beforeEnter;
const enter = data.enter;
const afterEnter = data.afterEnter;
const enterCancelled = data.enterCancelled;
const beforeAppear = data.beforeAppear;
const appear = data.appear;
const afterAppear = data.afterAppear;
const appearCancelled = data.appearCancelled;
const duration = data.duration;
// 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) {
transitionNode = transitionNode.parent;
context = transitionNode.context;
}
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 ("development" !== "production" && explicitEnterDuration != null) {
checkDuration(explicitEnterDuration, "enter", vnode);
}
const expectsCSS = css !== false && !isIE9;
const userWantsControl = getHookArgumentsLength(enterHook);
var cb = (el._enterCb = once(function() {
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", function() {
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(function() {
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 = data.css;
const type = data.type;
const leaveClass = data.leaveClass;
const leaveToClass = data.leaveToClass;
const leaveActiveClass = data.leaveActiveClass;
const beforeLeave = data.beforeLeave;
const leave = data.leave;
const afterLeave = data.afterLeave;
const leaveCancelled = data.leaveCancelled;
const delayLeave = data.delayLeave;
const duration = data.duration;
const expectsCSS = css !== false && !isIE9;
const userWantsControl = getHookArgumentsLength(leave);
const explicitLeaveDuration = toNumber(
isObject(duration) ? duration.leave : duration
);
if ("development" !== "production" && isDef(explicitLeaveDuration)) {
checkDuration(explicitLeaveDuration, "leave", vnode);
}
var cb = (el._leaveCb = once(function() {
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._pending || (el.parentNode._pending = {}))[
vnode.key
] = vnode;
}
beforeLeave && beforeLeave(el);
if (expectsCSS) {
addTransitionClass(el, leaveClass);
addTransitionClass(el, leaveActiveClass);
nextFrame(function() {
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);
}
}
const transition = inBrowser
? {
create: _enter,
activate: _enter,
remove: function remove$$1(vnode, rm) {
/* istanbul ignore else */
if (vnode.data.show !== true) {
leave(vnode, rm);
} else {
rm();
}
}
}
: {};
const 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: nodeOps, modules: 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", function() {
const el = document.activeElement;
if (el && el.vmodel) {
trigger(el, "input");
}
});
}
var directive = {
inserted: function inserted(el, binding, vnode, oldVnode) {
if (vnode.tag === "select") {
// #6903
if (oldVnode.elm && !oldVnode.elm._vOptions) {
mergeVNodeHook(vnode, "postpatch", function() {
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: function 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(function(o, i) {
return !looseEqual(o, prevOptions[i]);
})
) {
// trigger change event if
// no matching option found for at least one value
const needReset = el.multiple
? binding.value.some(function(v) {
return 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(function() {
actuallySetSelected(el, binding, vm);
}, 0);
}
}
function actuallySetSelected(el, binding, vm) {
const value = binding.value;
const isMultiple = el.multiple;
if (isMultiple && !Array.isArray(value)) {
"development" !== "production" &&
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(function(o) {
return !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;
}
const show = {
bind: function bind(el, ref, vnode) {
const value = ref.value;
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$$1) {
vnode.data.show = true;
enter(vnode, function() {
el.style.display = originalDisplay;
});
} else {
el.style.display = value ? originalDisplay : "none";
}
},
update: function update(el, ref, vnode) {
const value = ref.value;
const oldValue = ref.oldValue;
/* istanbul ignore if */
if (!value === !oldValue) {
return;
}
vnode = locateNode(vnode);
const transition$$1 = vnode.data && vnode.data.transition;
if (transition$$1) {
vnode.data.show = true;
if (value) {
enter(vnode, function() {
el.style.display = el.__vOriginalDisplay;
});
} else {
leave(vnode, function() {
el.style.display = "none";
});
}
} else {
el.style.display = value ? el.__vOriginalDisplay : "none";
}
},
unbind: function unbind(el, binding, vnode, oldVnode, isDestroy) {
if (!isDestroy) {
el.style.display = el.__vOriginalDisplay;
}
}
};
const platformDirectives = {
model: directive,
show: show
};
/* */
// Provides transition support for a single element/component.
// supports transition mode (out-in / in-out)
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$1 in listeners) {
data[camelize(key$1)] = listeners[key$1];
}
return data;
}
function placeholder(h, rawChild) {
if (/\d-keep-alive$/.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 Transition = {
name: "transition",
props: transitionProps,
abstract: true,
render: function render(h) {
const this$1 = this;
let children = this.$slots.default;
if (!children) {
return;
}
// filter out text nodes (possible whitespaces)
children = children.filter(function(c) {
return c.tag || isAsyncPlaceholder(c);
});
/* istanbul ignore if */
if (!children.length) {
return;
}
// warn multiple elements
if ("development" !== "production" && children.length > 1) {
warn(
"<transition> can only be used on a single element. Use " +
"<transition-group> for lists.",
this.$parent
);
}
const mode = this.mode;
// warn invalid mode
if (
"development" !== "production" &&
mode &&
mode !== "in-out" &&
mode !== "out-in"
) {
warn("invalid <transition> mode: " + mode, this.$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(function(d) {
return d.name === "show";
})
) {
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", function() {
this$1._leaving = false;
this$1.$forceUpdate();
});
return placeholder(h, rawChild);
} else if (mode === "in-out") {
if (isAsyncPlaceholder(child)) {
return oldRawChild;
}
let delayedLeave;
const performLeave = function() {
delayedLeave();
};
mergeVNodeHook(data, "afterEnter", performLeave);
mergeVNodeHook(data, "enterCancelled", performLeave);
mergeVNodeHook(oldData, "delayLeave", function(leave) {
delayedLeave = leave;
});
}
}
return rawChild;
}
};
/* */
// Provides transition support for list items.
// supports move transitions using the FLIP technique.
// Because the vdom's children update algorithm is "unstable" - i.e.
// it doesn't guarantee the relative positioning of removed elements,
// we force transition-group to update its children into two passes:
// in the first pass, we remove all nodes that need to be removed,
// triggering their leaving transition; in the second pass, we insert/move
// into the final desired state. This way in the second pass removed
// nodes will remain where they should be.
const props = extend(
{
tag: String,
moveClass: String
},
transitionProps
);
delete props.mode;
const TransitionGroup = {
props: props,
render: function 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$1 = 0; i$1 < prevChildren.length; i$1++) {
const c$1 = prevChildren[i$1];
c$1.data.transition = transitionData;
c$1.data.pos = c$1.elm.getBoundingClientRect();
if (map[c$1.key]) {
kept.push(c$1);
} else {
removed.push(c$1);
}
}
this.kept = h(tag, null, kept);
this.removed = removed;
}
return h(tag, null, children);
},
beforeUpdate: function beforeUpdate() {
// force removing pass
this.__patch__(
this._vnode,
this.kept,
false, // hydrating
true // removeOnly (!important, avoids unnecessary moves)
);
this._vnode = this.kept;
},
updated: function 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
// $flow-disable-line
this._reflow = document.body.offsetHeight;
children.forEach(function(c) {
if (c.data.moved) {
const el = c.elm;
const s = el.style;
addTransitionClass(el, moveClass);
s.transform = s.WebkitTransform = s.transitionDuration = "";
el.addEventListener(
transitionEndEvent,
(el._moveCb = function cb(e) {
if (!e || /transform$/.test(e.propertyName)) {
el.removeEventListener(transitionEndEvent, cb);
el._moveCb = null;
removeTransitionClass(el, moveClass);
}
})
);
}
});
},
methods: {
hasMove: function 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(function(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";
}
}
const platformComponents = {
Transition: Transition,
TransitionGroup: 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.$mount = function(el, hydrating) {
el = el && inBrowser ? query(el) : undefined;
return mountComponent(this, el, hydrating);
};
// devtools global hook
/* istanbul ignore next */
if (inBrowser) {
setTimeout(function() {
if (config.devtools) {
if (devtools) {
devtools.emit("init", Vue);
} else if (
"development" !== "production" &&
"development" !== "test" &&
isChrome
) {
console[console.info ? "info" : "log"](
"Download the Vue Devtools extension for a better development experience:\n" +
"https://github.com/vuejs/vue-devtools"
);
}
}
if (
"development" !== "production" &&
"development" !== "test" &&
config.productionTip !== false &&
typeof console !== "undefined"
) {
console[console.info ? "info" : "log"](
"You are running Vue in development mode.\n" +
"Make sure to turn on production mode when deploying for production.\n" +
"See more tips at https://vuejs.org/guide/deployment.html"
);
}
}, 0);
}
/* */
const defaultTagRE = /\{\{((?:.|\n)+?)\}\}/g;
const regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;
const buildRegex = cached(function(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 ("development" !== "production" && 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">.'
);
}
}
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;
}
const klass$1 = {
staticKeys: ["staticClass"],
transformNode: transformNode,
genData: 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.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;
}
const style$1 = {
staticKeys: ["staticStyle"],
transformNode: transformNode$1,
genData: genData$1
};
/* */
let decoder;
const he = {
decode: function 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.
*/
/*!
* HTML Parser By John Resig (ejohn.org)
* Modified by Juriy "kangax" Zaytsev
* Original code by Erik Arvidsson, Mozilla Public License
* http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
*/
// Regular Expressions for parsing tags and attributes
const attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
// could use https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName
// but for Vue templates we can enforce a simple charset
const ncname = "[a-zA-Z_][\\w\\-\\.]*";
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 pased as HTML comment when inlined in page
const comment = /^<!\--/;
const conditionalComment = /^<!\[/;
let IS_REGEX_CAPTURING_BROKEN = false;
"x".replace(/x(.)?/g, function(m, g) {
IS_REGEX_CAPTURING_BROKEN = g === "";
});
// Special Elements (can contain anything)
const isPlainTextElement = makeMap("script,style,textarea", true);
const reCache = {};
const decodingMap = {
"<": "<",
">": ">",
""": '"',
"&": "&",
" ": "\n",
"	": "\t"
};
const encodedAttr = /&(?:lt|gt|quot|amp);/g;
const encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#10|#9);/g;
// #5992
const isIgnoreNewlineTag = makeMap("pre,textarea", true);
const shouldIgnoreFirstNewline = function(tag, html) {
return tag && isIgnoreNewlineTag(tag) && html[0] === "\n";
};
function decodeAttr(value, shouldDecodeNewlines) {
const re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr;
return value.replace(re, function(match) {
return 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));
}
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(lastTag, html)) {
advance(1);
}
continue;
}
}
let text = void 0,
rest = void 0,
next = void 0;
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);
advance(textEnd);
}
if (textEnd < 0) {
text = html;
html = "";
}
if (options.chars && text) {
options.chars(text);
}
} else {
var endTagLength = 0;
var stackedTag = lastTag.toLowerCase();
const reStackedTag =
reCache[stackedTag] ||
(reCache[stackedTag] = new RegExp(
"([\\s\\S]*?)(</" + stackedTag + "[^>]*>)",
"i"
));
const rest$1 = 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$1.length;
html = rest$1;
parseEndTag(stackedTag, index - endTagLength, index);
}
if (html === last) {
options.chars && options.chars(html);
if ("development" !== "production" && !stack.length && options.warn) {
options.warn('Mal-formatted tag at end of template: "' + html + '"');
}
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(attribute))
) {
advance(attr[0].length);
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];
// hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778
if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) {
if (args[3] === "") {
delete args[3];
}
if (args[4] === "") {
delete args[4];
}
if (args[5] === "") {
delete args[5];
}
}
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 (!unary) {
stack.push({
tag: tagName,
lowerCasedTag: tagName.toLowerCase(),
attrs: attrs
});
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;
}
if (tagName) {
lowerCasedTagName = tagName.toLowerCase();
}
// Find the closest opened tag of the same type
if (tagName) {
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 (
"development" !== "production" &&
(i > pos || !tagName) &&
options.warn
) {
options.warn("tag <" + stack[i].tag + "> has no matching end tag.");
}
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+(?:in|of)\s+([^]*)/;
const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
const stripParensRE = /^\(|\)$/g;
const argRE = /:(.*)$/;
const bindRE = /^:|^v-bind:/;
const modifierRE = /\.[^.]+/g;
const decodeHTMLCached = cached(he.decode);
// configurable state
let warn$2;
let delimiters;
let transforms;
let preTransforms;
let postTransforms;
let platformIsPreTag;
let platformMustUseProp;
let platformGetTagNamespace;
function createASTElement(tag, attrs, parent) {
return {
type: 1,
tag: tag,
attrsList: attrs,
attrsMap: makeAttrsMap(attrs),
parent: 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;
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;
let root;
let currentParent;
let inVPre = false;
let inPre = false;
let warned = false;
function warnOnce(msg) {
if (!warned) {
warned = true;
warn$2(msg);
}
}
function closeElement(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);
}
}
parseHTML(template, {
warn: warn$2,
expectHTML: options.expectHTML,
isUnaryTag: options.isUnaryTag,
canBeLeftOpenTag: options.canBeLeftOpenTag,
shouldDecodeNewlines: options.shouldDecodeNewlines,
shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
shouldKeepComment: options.comments,
start: function start(tag, attrs, unary) {
// 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 (isForbiddenTag(element) && !isServerRendering()) {
element.forbidden = true;
"development" !== "production" &&
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."
);
}
// 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);
// element-scope stuff
processElement(element, options);
}
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."
);
}
if (el.attrsMap.hasOwnProperty("v-for")) {
warnOnce(
"Cannot use v-for on stateful component root element because " +
"it renders multiple elements."
);
}
}
}
// tree management
if (!root) {
root = element;
checkRootConstraints(root);
} else if (!stack.length) {
// 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."
);
}
}
if (currentParent && !element.forbidden) {
if (element.elseif || element.else) {
processIfConditions(element, currentParent);
} else if (element.slotScope) {
// scoped slot
currentParent.plain = false;
const name = element.slotTarget || '"default"';
(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[
name
] = element;
} else {
currentParent.children.push(element);
element.parent = currentParent;
}
}
if (!unary) {
currentParent = element;
stack.push(element);
} else {
closeElement(element);
}
},
end: function end() {
// remove trailing whitespace
const element = stack[stack.length - 1];
const lastNode = element.children[element.children.length - 1];
if (
lastNode &&
lastNode.type === 3 &&
lastNode.text === " " &&
!inPre
) {
element.children.pop();
}
// pop stack
stack.length -= 1;
currentParent = stack[stack.length - 1];
closeElement(element);
},
chars: function chars(text) {
if (!currentParent) {
{
if (text === template) {
warnOnce(
"Component template requires a root element, rather than just text."
);
} else if ((text = text.trim())) {
warnOnce(
'text "' + text + '" outside root element will be ignored.'
);
}
}
return;
}
// IE textarea placeholder bug
/* istanbul ignore if */
if (
isIE &&
currentParent.tag === "textarea" &&
currentParent.attrsMap.placeholder === text
) {
return;
}
const children = currentParent.children;
text =
inPre || text.trim()
? isTextTag(currentParent)
? text
: decodeHTMLCached(text)
: // only preserve whitespace if its not right after a starting tag
preserveWhitespace && children.length
? " "
: "";
if (text) {
let res;
if (!inVPre && text !== " " && (res = parseText(text, delimiters))) {
children.push({
type: 2,
expression: res.expression,
tokens: res.tokens,
text: text
});
} else if (
text !== " " ||
!children.length ||
children[children.length - 1].text !== " "
) {
children.push({
type: 3,
text: text
});
}
}
},
comment: function comment(text) {
currentParent.children.push({
type: 3,
text: text,
isComment: true
});
}
});
return root;
}
function processPre(el) {
if (getAndRemoveAttr(el, "v-pre") != null) {
el.pre = true;
}
}
function processRawAttrs(el) {
const l = el.attrsList.length;
if (l) {
const attrs = (el.attrs = new Array(l));
for (let i = 0; i < l; i++) {
attrs[i] = {
name: el.attrsList[i].name,
value: JSON.stringify(el.attrsList[i].value)
};
}
} 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.attrsList.length;
processRef(element);
processSlot(element);
processComponent(element);
for (let i = 0; i < transforms.length; i++) {
element = transforms[i](element, options) || element;
}
processAttrs(element);
}
function processKey(el) {
const exp = getBindingAttr(el, "key");
if (exp) {
if ("development" !== "production" && el.tag === "template") {
warn$2(
"<template> cannot be keyed. Place the key on real elements instead."
);
}
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);
}
}
}
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, "");
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."
);
}
}
function findPrevElement(children) {
let i = children.length;
while (i--) {
if (children[i].type === 1) {
return children[i];
} else {
if ("development" !== "production" && children[i].text !== " ") {
warn$2(
'text "' +
children[i].text.trim() +
'" between v-if and v-else(-if) ' +
"will be ignored."
);
}
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;
}
}
function processSlot(el) {
if (el.tag === "slot") {
el.slotName = getBindingAttr(el, "name");
if ("development" !== "production" && 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."
);
}
} else {
let slotScope;
if (el.tag === "template") {
slotScope = getAndRemoveAttr(el, "scope");
/* istanbul ignore if */
if ("development" !== "production" && 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.",
true
);
}
el.slotScope = slotScope || getAndRemoveAttr(el, "slot-scope");
} else if ((slotScope = getAndRemoveAttr(el, "slot-scope"))) {
/* istanbul ignore if */
if ("development" !== "production" && el.attrsMap["v-for"]) {
warn$2(
"Ambiguous combined usage of slot-scope and v-for on <" +
el.tag +
"> " +
"(v-for takes higher priority). Use a wrapper <template> for the " +
"scoped slot to make it clearer.",
true
);
}
el.slotScope = slotScope;
}
const slotTarget = getBindingAttr(el, "slot");
if (slotTarget) {
el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
// preserve slot as an attribute for native shadow DOM compat
// only for non-scoped slots.
if (el.tag !== "template" && !el.slotScope) {
addAttr(el, "slot", slotTarget);
}
}
}
}
function processComponent(el) {
let binding;
if ((binding = getBindingAttr(el, "is"))) {
el.component = binding;
}
if (getAndRemoveAttr(el, "inline-template") != null) {
el.inlineTemplate = true;
}
}
function processAttrs(el) {
const list = el.attrsList;
let i, l, name, rawName, value, modifiers, isProp;
for (i = 0, l = list.length; i < l; i++) {
name = rawName = list[i].name;
value = list[i].value;
if (dirRE.test(name)) {
// mark element as dynamic
el.hasBindings = true;
// modifiers
modifiers = parseModifiers(name);
if (modifiers) {
name = name.replace(modifierRE, "");
}
if (bindRE.test(name)) {
// v-bind
name = name.replace(bindRE, "");
value = parseFilters(value);
isProp = false;
if (modifiers) {
if (modifiers.prop) {
isProp = true;
name = camelize(name);
if (name === "innerHtml") {
name = "innerHTML";
}
}
if (modifiers.camel) {
name = camelize(name);
}
if (modifiers.sync) {
addHandler(
el,
"update:" + camelize(name),
genAssignmentCode(value, "$event")
);
}
}
if (
isProp ||
(!el.component &&
platformMustUseProp(el.tag, el.attrsMap.type, name))
) {
addProp(el, name, value);
} else {
addAttr(el, name, value);
}
} else if (onRE.test(name)) {
// v-on
name = name.replace(onRE, "");
addHandler(el, name, value, modifiers, false, warn$2);
} else {
// normal directives
name = name.replace(dirRE, "");
// parse arg
const argMatch = name.match(argRE);
const arg = argMatch && argMatch[1];
if (arg) {
name = name.slice(0, -(arg.length + 1));
}
addDirective(el, name, rawName, value, arg, modifiers);
if ("development" !== "production" && 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">.'
);
}
}
addAttr(el, name, JSON.stringify(value));
// #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");
}
}
}
}
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(function(m) {
ret[m.slice(1)] = true;
});
return ret;
}
}
function makeAttrsMap(attrs) {
const map = {};
for (let i = 0, l = attrs.length; i < l; i++) {
if (
"development" !== "production" &&
map[attrs[i].name] &&
!isIE &&
!isEdge
) {
warn$2("duplicate attribute: " + attrs[i].name);
}
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 = _el.parent;
}
}
/* */
/**
* Expand input[v-model] with dyanmic type bindings into v-if-else chains
* Turn this:
* <input v-model="data[type]" :type="type">
* into this:
* <input v-if="type === 'checkbox'" type="checkbox" v-model="data[type]">
* <input v-else-if="type === 'radio'" type="radio" v-model="data[type]">
* <input v-else :type="type" v-model="data[type]">
*/
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);
}
const model$2 = {
preTransformNode: preTransformNode
};
const modules$1 = [klass$1, style$1, model$2];
/* */
function text(el, dir) {
if (dir.value) {
addProp(el, "textContent", "_s(" + dir.value + ")");
}
}
/* */
function html(el, dir) {
if (dir.value) {
addProp(el, "innerHTML", "_s(" + dir.value + ")");
}
}
const directives$1 = {
model: model,
text: text,
html: html
};
/* */
const baseOptions = {
expectHTML: true,
modules: modules$1,
directives: directives$1,
isPreTag: isPreTag,
isUnaryTag: isUnaryTag,
mustUseProp: mustUseProp,
canBeLeftOpenTag: canBeLeftOpenTag,
isReservedTag: isReservedTag,
getTagNamespace: 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" +
(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 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
const block = node.ifConditions[i$1].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 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
markStaticRoots(node.ifConditions[i$1].block, isInFor);
}
}
}
}
function isStatic(node) {
if (node.type === 2) {
// expression
return false;
}
if (node.type === 3) {
// text
return true;
}
return !!(
node.pre ||
(!node.hasBindings && // no dynamic bindings
!node.if &&
!node.for && // not v-if or v-for or v-else
!isBuiltInTag(node.tag) && // not a built-in
isPlatformReservedTag(node.tag) && // not a component
!isDirectChildOfTemplateFor(node) &&
Object.keys(node).every(isStaticKey))
);
}
function isDirectChildOfTemplateFor(node) {
while (node.parent) {
node = node.parent;
if (node.tag !== "template") {
return false;
}
if (node.for) {
return true;
}
}
return false;
}
/* */
const fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function\s*\(/;
const simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/;
// KeyboardEvent.keyCode aliases
const keyCodes = {
esc: 27,
tab: 9,
enter: 13,
space: 32,
up: 38,
left: 37,
right: 39,
down: 40,
delete: [8, 46]
};
// KeyboardEvent.key aliases
const keyNames = {
esc: "Escape",
tab: "Tab",
enter: "Enter",
space: " ",
// #7806: IE11 uses key names without `Arrow` prefix for arrow keys.
up: ["Up", "ArrowUp"],
left: ["Left", "ArrowLeft"],
right: ["Right", "ArrowRight"],
down: ["Down", "ArrowDown"],
delete: ["Backspace", "Delete"]
};
// #4868: modifiers that prevent the execution of the listener
// need to explicitly return null so that we can determine whether to remove
// the listener for .once
const genGuard = function(condition) {
return "if(" + condition + ")return null;";
};
const modifierCode = {
stop: "$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 && $event.button !== 2")
};
function genHandlers(events, isNative, warn) {
let res = isNative ? "nativeOn:{" : "on:{";
for (const name in events) {
res += '"' + name + '":' + genHandler(name, events[name]) + ",";
}
return res.slice(0, -1) + "}";
}
function genHandler(name, handler) {
if (!handler) {
return "function(){}";
}
if (Array.isArray(handler)) {
return (
"[" +
handler
.map(function(handler) {
return genHandler(name, handler);
})
.join(",") +
"]"
);
}
const isMethodPath = simplePathRE.test(handler.value);
const isFunctionExpression = fnExpRE.test(handler.value);
if (!handler.modifiers) {
if (isMethodPath || isFunctionExpression) {
return handler.value;
}
/* istanbul ignore if */
return "function($event){" + 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") {
var modifiers = handler.modifiers;
genModifierCode += genGuard(
["ctrl", "shift", "alt", "meta"]
.filter(function(keyModifier) {
return !modifiers[keyModifier];
})
.map(function(keyModifier) {
return "$event." + keyModifier + "Key";
})
.join("||")
);
} else {
keys.push(key);
}
}
if (keys.length) {
code += genKeyFilter(keys);
}
// Make sure modifiers like prevent and stop get executed after key filtering
if (genModifierCode) {
code += genModifierCode;
}
const handlerCode = isMethodPath
? "return " + handler.value + "($event)"
: isFunctionExpression
? "return (" + handler.value + ")($event)"
: handler.value;
/* istanbul ignore if */
return "function($event){" + code + handlerCode + "}";
}
}
function genKeyFilter(keys) {
return (
"if(!('button' in $event)&&" +
keys.map(genFilterCode).join("&&") +
")return null;"
);
}
function genFilterCode(key) {
const keyVal = parseInt(key, 10);
if (keyVal) {
return "$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 ("development" !== "production" && dir.modifiers) {
warn("v-on without argument does not support modifiers.");
}
el.wrapListeners = function(code) {
return "_g(" + code + "," + dir.value + ")";
};
}
/* */
function bind$1(el, dir) {
el.wrapData = function(code) {
return (
"_b(" +
code +
",'" +
el.tag +
"'," +
dir.value +
"," +
(dir.modifiers && dir.modifiers.prop ? "true" : "false") +
(dir.modifiers && dir.modifiers.sync ? ",true" : "") +
")"
);
};
}
/* */
const baseDirectives = {
on: on,
bind: bind$1,
cloak: noop
};
/* */
const CodegenState = function CodegenState(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 = function(el) {
return !isReservedTag(el.tag);
};
this.onceId = 0;
this.staticRenderFns = [];
};
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.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) {
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 {
const data = el.plain ? undefined : genData$2(el, state);
const children = el.inlineTemplate
? null
: genChildren(el, state, true);
code =
"_c('" +
el.tag +
"'" +
(data ? "," + data : "") +
(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;
state.staticRenderFns.push(
"with(this){return " + genElement(el, state) + "}"
);
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) {
"development" !== "production" &&
state.warn("v-once can only be used inside v-for that is keyed. ");
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 (
"development" !== "production" &&
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.",
true /* tip */
);
}
el.forProcessed = true; // avoid recursion
return (
(altHelper || "_l") +
"((" +
exp +
")," +
"function(" +
alias +
iterator1 +
iterator2 +
"){" +
"return " +
(altGen || genElement)(el, state) +
"})"
);
}
function genData$2(el, state) {
let data = "{";
// directives first.
// directives may mutate the el's other properties before they are generated.
const dirs = genDirectives(el, state);
if (dirs) {
data += dirs + ",";
}
// key
if (el.key) {
data += "key:" + el.key + ",";
}
// ref
if (el.ref) {
data += "ref:" + el.ref + ",";
}
if (el.refInFor) {
data += "refInFor:true,";
}
// pre
if (el.pre) {
data += "pre:true,";
}
// record original tag name for components using "is" attribute
if (el.component) {
data += 'tag:"' + el.tag + '",';
}
// module data generation functions
for (let i = 0; i < state.dataGenFns.length; i++) {
data += state.dataGenFns[i](el);
}
// attributes
if (el.attrs) {
data += "attrs:{" + genProps(el.attrs) + "},";
}
// DOM props
if (el.props) {
data += "domProps:{" + genProps(el.props) + "},";
}
// event handlers
if (el.events) {
data += genHandlers(el.events, false, state.warn) + ",";
}
if (el.nativeEvents) {
data += genHandlers(el.nativeEvents, true, state.warn) + ",";
}
// slot target
// only for non-scoped slots
if (el.slotTarget && !el.slotScope) {
data += "slot:" + el.slotTarget + ",";
}
// scoped slots
if (el.scopedSlots) {
data += genScopedSlots(el.scopedSlots, state) + ",";
}
// component v-model
if (el.model) {
data +=
"model:{value:" +
el.model.value +
",callback:" +
el.model.callback +
",expression:" +
el.model.expression +
"},";
}
// inline-template
if (el.inlineTemplate) {
const inlineTemplate = genInlineTemplate(el, state);
if (inlineTemplate) {
data += inlineTemplate + ",";
}
}
data = data.replace(/,$/, "") + "}";
// v-bind 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.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 (
"development" !== "production" &&
(el.children.length !== 1 || ast.type !== 1)
) {
state.warn(
"Inline-template components must have exactly one child element."
);
}
if (ast.type === 1) {
const inlineRenderFns = generate(ast, state.options);
return (
"inlineTemplate:{render:function(){" +
inlineRenderFns.render +
"},staticRenderFns:[" +
inlineRenderFns.staticRenderFns
.map(function(code) {
return "function(){" + code + "}";
})
.join(",") +
"]}"
);
}
}
function genScopedSlots(slots, state) {
return (
"scopedSlots:_u([" +
Object.keys(slots)
.map(function(key) {
return genScopedSlot(key, slots[key], state);
})
.join(",") +
"])"
);
}
function genScopedSlot(key, el, state) {
if (el.for && !el.forProcessed) {
return genForScopedSlot(key, el, state);
}
const fn =
"function(" +
String(el.slotScope) +
"){" +
"return " +
(el.tag === "template"
? el.if
? el.if + "?" + (genChildren(el, state) || "undefined") + ":undefined"
: genChildren(el, state) || "undefined"
: genElement(el, state)) +
"}";
return "{key:" + key + ",fn:" + fn + "}";
}
function genForScopedSlot(key, el, state) {
const exp = el.for;
const alias = el.alias;
const iterator1 = el.iterator1 ? "," + el.iterator1 : "";
const iterator2 = el.iterator2 ? "," + el.iterator2 : "";
el.forProcessed = true; // avoid recursion
return (
"_l((" +
exp +
")," +
"function(" +
alias +
iterator1 +
iterator2 +
"){" +
"return " +
genScopedSlot(key, el, state) +
"})"
);
}
function genChildren(el, state, checkSkip, altGenElement, altGenNode) {
const children = el.children;
if (children.length) {
const el$1 = children[0];
// optimize single v-for
if (
children.length === 1 &&
el$1.for &&
el$1.tag !== "template" &&
el$1.tag !== "slot"
) {
return (altGenElement || genElement)(el$1, state);
}
const normalizationType = checkSkip
? getNormalizationType(children, state.maybeComponent)
: 0;
const gen = altGenNode || genNode;
return (
"[" +
children
.map(function(c) {
return 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(function(c) {
return needsNormalization(c.block);
}))
) {
res = 2;
break;
}
if (
maybeComponent(el) ||
(el.ifConditions &&
el.ifConditions.some(function(c) {
return 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);
}
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.attrs
.map(function(a) {
return camelize(a.name) + ":" + a.value;
})
.join(",") +
"}";
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 res = "";
for (let i = 0; i < props.length; i++) {
const prop = props[i];
/* istanbul ignore if */
{
res +=
'"' + prop.name + '":' + transformSpecialNewlines(prop.value) + ",";
}
}
return res.slice(0, -1);
}
// #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) {
const errors = [];
if (ast) {
checkNode(ast, errors);
}
return errors;
}
function checkNode(node, errors) {
if (node.type === 1) {
for (const name in node.attrsMap) {
if (dirRE.test(name)) {
const value = node.attrsMap[name];
if (value) {
if (name === "v-for") {
checkFor(node, 'v-for="' + value + '"', errors);
} else if (onRE.test(name)) {
checkEvent(value, name + '="' + value + '"', errors);
} else {
checkExpression(value, name + '="' + value + '"', errors);
}
}
}
}
if (node.children) {
for (let i = 0; i < node.children.length; i++) {
checkNode(node.children[i], errors);
}
}
} else if (node.type === 2) {
checkExpression(node.expression, node.text, errors);
}
}
function checkEvent(exp, text, errors) {
const stipped = exp.replace(stripStringRE, "");
const keywordMatch = stipped.match(unaryOperatorsRE);
if (keywordMatch && stipped.charAt(keywordMatch.index - 1) !== "$") {
errors.push(
"avoid using JavaScript unary operator as property name: " +
'"' +
keywordMatch[0] +
'" in expression ' +
text.trim()
);
}
checkExpression(exp, text, errors);
}
function checkFor(node, text, errors) {
checkExpression(node.for || "", text, errors);
checkIdentifier(node.alias, "v-for alias", text, errors);
checkIdentifier(node.iterator1, "v-for iterator", text, errors);
checkIdentifier(node.iterator2, "v-for iterator", text, errors);
}
function checkIdentifier(ident, type, text, errors) {
if (typeof ident === "string") {
try {
new Function("var " + ident + "=_");
} catch (e) {
errors.push(
"invalid " + type + ' "' + ident + '" in expression: ' + text.trim()
);
}
}
}
function checkExpression(exp, text, errors) {
try {
new Function("return " + exp);
} catch (e) {
const keywordMatch = exp
.replace(stripStringRE, "")
.match(prohibitedKeywordRE);
if (keywordMatch) {
errors.push(
"avoid using JavaScript keyword as property name: " +
'"' +
keywordMatch[0] +
'"\n Raw expression: ' +
text.trim()
);
} else {
errors.push(
"invalid expression: " +
e.message +
" in\n\n" +
" " +
exp +
"\n\n" +
" Raw expression: " +
text.trim() +
"\n"
);
}
}
}
/* */
function createFunction(code, errors) {
try {
return new Function(code);
} catch (err) {
errors.push({ err: err, code: 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) {
warn$$1(
"Error compiling template:\n\n" +
template +
"\n\n" +
compiled.errors
.map(function(e) {
return "- " + e;
})
.join("\n") +
"\n",
vm
);
}
if (compiled.tips && compiled.tips.length) {
compiled.tips.forEach(function(msg) {
return tip(msg, vm);
});
}
}
// turn code into functions
const res = {};
const fnGenErrors = [];
res.render = createFunction(compiled.render, fnGenErrors);
res.staticRenderFns = compiled.staticRenderFns.map(function(code) {
return createFunction(code, fnGenErrors);
});
// check function generation errors.
// this should only happen if there is a bug in the compiler itself.
// mostly for codegen development use
/* istanbul ignore if */
{
if (
(!compiled.errors || !compiled.errors.length) &&
fnGenErrors.length
) {
warn$$1(
"Failed to generate render function:\n\n" +
fnGenErrors
.map(function(ref) {
const err = ref.err;
const code = ref.code;
return 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 = [];
finalOptions.warn = function(msg, tip) {
(tip ? tips : errors).push(msg);
};
if (options) {
// 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];
}
}
}
const compiled = baseCompile(template, finalOptions);
{
errors.push.apply(errors, detectErrors(compiled.ast));
}
compiled.errors = errors;
compiled.tips = tips;
return compiled;
}
return {
compile: 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: ast,
render: code.render,
staticRenderFns: code.staticRenderFns
};
});
/* */
const ref$1 = createCompiler(baseOptions);
const compileToFunctions = ref$1.compileToFunctions;
/* */
// check whether current browser encodes a char inside attribute values
let div;
function getShouldDecode(href) {
div = div || document.createElement("div");
div.innerHTML = href ? '<a href="\n"/>' : '<div a="\n"/>';
return div.innerHTML.indexOf(" ") > 0;
}
// #3663: IE encodes newlines inside attribute values while other browsers don't
const shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false;
// #6828: chrome encodes content in a[href]
const shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false;
/* */
const idToTemplate = cached(function(id) {
const el = query(id);
return el && el.innerHTML;
});
const mount = Vue.prototype.$mount;
Vue.prototype.$mount = function(el, hydrating) {
el = el && query(el);
/* istanbul ignore if */
if (el === document.body || el === document.documentElement) {
"development" !== "production" &&
warn(
"Do not mount Vue to <html> or <body> - mount to normal elements instead."
);
return this;
}
const options = this.$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 ("development" !== "production" && !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 ("development" !== "production" && config.performance && mark) {
mark("compile");
}
const ref = compileToFunctions(
template,
{
shouldDecodeNewlines: shouldDecodeNewlines,
shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref,
delimiters: options.delimiters,
comments: options.comments
},
this
);
const render = ref.render;
const staticRenderFns = ref.staticRenderFns;
options.render = render;
options.staticRenderFns = staticRenderFns;
/* istanbul ignore if */
if ("development" !== "production" && 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;
return Vue;
});