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vuex.js
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vuex.js
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/**
* vuex v2.0.0
* (c) 2016 Evan You
* @license MIT
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global.Vuex = factory());
}(this, (function () { 'use strict';
var devtoolHook =
typeof window !== 'undefined' &&
window.__VUE_DEVTOOLS_GLOBAL_HOOK__
function devtoolPlugin (store) {
if (!devtoolHook) { return }
store._devtoolHook = devtoolHook
devtoolHook.emit('vuex:init', store)
devtoolHook.on('vuex:travel-to-state', function (targetState) {
store.replaceState(targetState)
})
store.subscribe(function (mutation, state) {
devtoolHook.emit('vuex:mutation', mutation, state)
})
}
function applyMixin (Vue) {
var version = Number(Vue.version.split('.')[0])
if (version >= 2) {
var usesInit = Vue.config._lifecycleHooks.indexOf('init') > -1
Vue.mixin(usesInit ? { init: vuexInit } : { beforeCreate: vuexInit })
} else {
// override init and inject vuex init procedure
// for 1.x backwards compatibility.
var _init = Vue.prototype._init
Vue.prototype._init = function (options) {
if ( options === void 0 ) options = {};
options.init = options.init
? [vuexInit].concat(options.init)
: vuexInit
_init.call(this, options)
}
}
/**
* Vuex init hook, injected into each instances init hooks list.
*/
function vuexInit () {
var options = this.$options
// store injection
if (options.store) {
this.$store = options.store
} else if (options.parent && options.parent.$store) {
this.$store = options.parent.$store
}
}
}
function mapState (states) {
var res = {}
normalizeMap(states).forEach(function (ref) {
var key = ref.key;
var val = ref.val;
res[key] = function mappedState () {
return typeof val === 'function'
? val.call(this, this.$store.state, this.$store.getters)
: this.$store.state[val]
}
})
return res
}
function mapMutations (mutations) {
var res = {}
normalizeMap(mutations).forEach(function (ref) {
var key = ref.key;
var val = ref.val;
res[key] = function mappedMutation () {
var args = [], len = arguments.length;
while ( len-- ) args[ len ] = arguments[ len ];
return this.$store.commit.apply(this.$store, [val].concat(args))
}
})
return res
}
function mapGetters (getters) {
var res = {}
normalizeMap(getters).forEach(function (ref) {
var key = ref.key;
var val = ref.val;
res[key] = function mappedGetter () {
if (!(val in this.$store.getters)) {
console.error(("[vuex] unknown getter: " + val))
}
return this.$store.getters[val]
}
})
return res
}
function mapActions (actions) {
var res = {}
normalizeMap(actions).forEach(function (ref) {
var key = ref.key;
var val = ref.val;
res[key] = function mappedAction () {
var args = [], len = arguments.length;
while ( len-- ) args[ len ] = arguments[ len ];
return this.$store.dispatch.apply(this.$store, [val].concat(args))
}
})
return res
}
function normalizeMap (map) {
return Array.isArray(map)
? map.map(function (key) { return ({ key: key, val: key }); })
: Object.keys(map).map(function (key) { return ({ key: key, val: map[key] }); })
}
function isObject (obj) {
return obj !== null && typeof obj === 'object'
}
function isPromise (val) {
return val && typeof val.then === 'function'
}
function assert (condition, msg) {
if (!condition) { throw new Error(("[vuex] " + msg)) }
}
var Vue // bind on install
var Store = function Store (options) {
var this$1 = this;
if ( options === void 0 ) options = {};
assert(Vue, "must call Vue.use(Vuex) before creating a store instance.")
assert(typeof Promise !== 'undefined', "vuex requires a Promise polyfill in this browser.")
var state = options.state; if ( state === void 0 ) state = {};
var plugins = options.plugins; if ( plugins === void 0 ) plugins = [];
var strict = options.strict; if ( strict === void 0 ) strict = false;
// store internal state
this._options = options
this._committing = false
this._actions = Object.create(null)
this._mutations = Object.create(null)
this._wrappedGetters = Object.create(null)
this._runtimeModules = Object.create(null)
this._subscribers = []
this._watcherVM = new Vue()
// bind commit and dispatch to self
var store = this
var ref = this;
var dispatch = ref.dispatch;
var commit = ref.commit;
this.dispatch = function boundDispatch (type, payload) {
return dispatch.call(store, type, payload)
}
this.commit = function boundCommit (type, payload, options) {
return commit.call(store, type, payload, options)
}
// strict mode
this.strict = strict
// init root module.
// this also recursively registers all sub-modules
// and collects all module getters inside this._wrappedGetters
installModule(this, state, [], options)
// initialize the store vm, which is responsible for the reactivity
// (also registers _wrappedGetters as computed properties)
resetStoreVM(this, state)
// apply plugins
plugins.concat(devtoolPlugin).forEach(function (plugin) { return plugin(this$1); })
};
var prototypeAccessors = { state: {} };
prototypeAccessors.state.get = function () {
return this._vm.state
};
prototypeAccessors.state.set = function (v) {
assert(false, "Use store.replaceState() to explicit replace store state.")
};
Store.prototype.commit = function commit (type, payload, options) {
var this$1 = this;
// check object-style commit
if (isObject(type) && type.type) {
options = payload
payload = type
type = type.type
}
var mutation = { type: type, payload: payload }
var entry = this._mutations[type]
if (!entry) {
console.error(("[vuex] unknown mutation type: " + type))
return
}
this._withCommit(function () {
entry.forEach(function commitIterator (handler) {
handler(payload)
})
})
if (!options || !options.silent) {
this._subscribers.forEach(function (sub) { return sub(mutation, this$1.state); })
}
};
Store.prototype.dispatch = function dispatch (type, payload) {
// check object-style dispatch
if (isObject(type) && type.type) {
payload = type
type = type.type
}
var entry = this._actions[type]
if (!entry) {
console.error(("[vuex] unknown action type: " + type))
return
}
return entry.length > 1
? Promise.all(entry.map(function (handler) { return handler(payload); }))
: entry[0](payload)
};
Store.prototype.subscribe = function subscribe (fn) {
var subs = this._subscribers
if (subs.indexOf(fn) < 0) {
subs.push(fn)
}
return function () {
var i = subs.indexOf(fn)
if (i > -1) {
subs.splice(i, 1)
}
}
};
Store.prototype.watch = function watch (getter, cb, options) {
var this$1 = this;
assert(typeof getter === 'function', "store.watch only accepts a function.")
return this._watcherVM.$watch(function () { return getter(this$1.state); }, cb, options)
};
Store.prototype.replaceState = function replaceState (state) {
var this$1 = this;
this._withCommit(function () {
this$1._vm.state = state
})
};
Store.prototype.registerModule = function registerModule (path, module) {
if (typeof path === 'string') { path = [path] }
assert(Array.isArray(path), "module path must be a string or an Array.")
this._runtimeModules[path.join('.')] = module
installModule(this, this.state, path, module)
// reset store to update getters...
resetStoreVM(this, this.state)
};
Store.prototype.unregisterModule = function unregisterModule (path) {
var this$1 = this;
if (typeof path === 'string') { path = [path] }
assert(Array.isArray(path), "module path must be a string or an Array.")
delete this._runtimeModules[path.join('.')]
this._withCommit(function () {
var parentState = getNestedState(this$1.state, path.slice(0, -1))
Vue.delete(parentState, path[path.length - 1])
})
resetStore(this)
};
Store.prototype.hotUpdate = function hotUpdate (newOptions) {
updateModule(this._options, newOptions)
resetStore(this)
};
Store.prototype._withCommit = function _withCommit (fn) {
var committing = this._committing
this._committing = true
fn()
this._committing = committing
};
Object.defineProperties( Store.prototype, prototypeAccessors );
function updateModule (targetModule, newModule) {
if (newModule.actions) {
targetModule.actions = newModule.actions
}
if (newModule.mutations) {
targetModule.mutations = newModule.mutations
}
if (newModule.getters) {
targetModule.getters = newModule.getters
}
if (newModule.modules) {
for (var key in newModule.modules) {
if (!(targetModule.modules && targetModule.modules[key])) {
console.warn(
"[vuex] trying to add a new module '" + key + "' on hot reloading, " +
'manual reload is needed'
)
return
}
updateModule(targetModule.modules[key], newModule.modules[key])
}
}
}
function resetStore (store) {
store._actions = Object.create(null)
store._mutations = Object.create(null)
store._wrappedGetters = Object.create(null)
var state = store.state
// init root module
installModule(store, state, [], store._options, true)
// init all runtime modules
Object.keys(store._runtimeModules).forEach(function (key) {
installModule(store, state, key.split('.'), store._runtimeModules[key], true)
})
// reset vm
resetStoreVM(store, state)
}
function resetStoreVM (store, state) {
var oldVm = store._vm
// bind store public getters
store.getters = {}
var wrappedGetters = store._wrappedGetters
var computed = {}
Object.keys(wrappedGetters).forEach(function (key) {
var fn = wrappedGetters[key]
// use computed to leverage its lazy-caching mechanism
computed[key] = function () { return fn(store); }
Object.defineProperty(store.getters, key, {
get: function () { return store._vm[key]; }
})
})
// use a Vue instance to store the state tree
// suppress warnings just in case the user has added
// some funky global mixins
var silent = Vue.config.silent
Vue.config.silent = true
store._vm = new Vue({
data: { state: state },
computed: computed
})
Vue.config.silent = silent
// enable strict mode for new vm
if (store.strict) {
enableStrictMode(store)
}
if (oldVm) {
// dispatch changes in all subscribed watchers
// to force getter re-evaluation.
store._withCommit(function () {
oldVm.state = null
})
Vue.nextTick(function () { return oldVm.$destroy(); })
}
}
function installModule (store, rootState, path, module, hot) {
var isRoot = !path.length
var state = module.state;
var actions = module.actions;
var mutations = module.mutations;
var getters = module.getters;
var modules = module.modules;
// set state
if (!isRoot && !hot) {
var parentState = getNestedState(rootState, path.slice(0, -1))
var moduleName = path[path.length - 1]
store._withCommit(function () {
Vue.set(parentState, moduleName, state || {})
})
}
if (mutations) {
Object.keys(mutations).forEach(function (key) {
registerMutation(store, key, mutations[key], path)
})
}
if (actions) {
Object.keys(actions).forEach(function (key) {
registerAction(store, key, actions[key], path)
})
}
if (getters) {
wrapGetters(store, getters, path)
}
if (modules) {
Object.keys(modules).forEach(function (key) {
installModule(store, rootState, path.concat(key), modules[key], hot)
})
}
}
function registerMutation (store, type, handler, path) {
if ( path === void 0 ) path = [];
var entry = store._mutations[type] || (store._mutations[type] = [])
entry.push(function wrappedMutationHandler (payload) {
handler(getNestedState(store.state, path), payload)
})
}
function registerAction (store, type, handler, path) {
if ( path === void 0 ) path = [];
var entry = store._actions[type] || (store._actions[type] = [])
var dispatch = store.dispatch;
var commit = store.commit;
entry.push(function wrappedActionHandler (payload, cb) {
var res = handler({
dispatch: dispatch,
commit: commit,
getters: store.getters,
state: getNestedState(store.state, path),
rootState: store.state
}, payload, cb)
if (!isPromise(res)) {
res = Promise.resolve(res)
}
if (store._devtoolHook) {
return res.catch(function (err) {
store._devtoolHook.emit('vuex:error', err)
throw err
})
} else {
return res
}
})
}
function wrapGetters (store, moduleGetters, modulePath) {
Object.keys(moduleGetters).forEach(function (getterKey) {
var rawGetter = moduleGetters[getterKey]
if (store._wrappedGetters[getterKey]) {
console.error(("[vuex] duplicate getter key: " + getterKey))
return
}
store._wrappedGetters[getterKey] = function wrappedGetter (store) {
return rawGetter(
getNestedState(store.state, modulePath), // local state
store.getters, // getters
store.state // root state
)
}
})
}
function enableStrictMode (store) {
store._vm.$watch('state', function () {
assert(store._committing, "Do not mutate vuex store state outside mutation handlers.")
}, { deep: true, sync: true })
}
function getNestedState (state, path) {
return path.length
? path.reduce(function (state, key) { return state[key]; }, state)
: state
}
function install (_Vue) {
if (Vue) {
console.error(
'[vuex] already installed. Vue.use(Vuex) should be called only once.'
)
return
}
Vue = _Vue
applyMixin(Vue)
}
// auto install in dist mode
if (typeof window !== 'undefined' && window.Vue) {
install(window.Vue)
}
var index = {
Store: Store,
install: install,
mapState: mapState,
mapMutations: mapMutations,
mapGetters: mapGetters,
mapActions: mapActions
}
return index;
})));