vue源码架构的解读（详细）

npm install npm run dev

"dev": "rollup -w -c scripts/config.js --environment TARGET:web-full-dev", "dev:cjs": "rollup -w -c scripts/config.js --environment TARGET:web-runtime-cjs-dev",

'web-runtime-cjs-dev': { entry: resolve('web/entry-runtime.js'), dest: resolve('dist/vue.runtime.common.dev.js'), format: 'cjs', env: 'development', banner }

import Vue from './runtime/index' export default Vue

import Vue from 'core/index' Vue.prototype.$mount = function ( el?: string | Element, hydrating?: boolean ): Component { el = el && inBrowser ? query(el) : undefined return mountComponent(this, el, hydrating) } export default Vue

You are running Vue in development mode. Make sure to turn on production mode when deploying for production. See more tips at https://vuejs.org/guide/deployment.html

function Vue (options) { if (process.env.NODE_ENV !== '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) export default Vue

export function initMixin (Vue) { Vue.prototype._init = function (options?: Object) { const vm = this // a uid vm._uid = uid++ let startTag, endTag /* istanbul ignore if */ if (process.env.NODE_ENV !== '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 // 处理传入的options // 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 { // 传入的options,默认的options一起合并挂载到vm.$options上 vm.$options = mergeOptions( resolveConstructorOptions(vm.constructor), options || {}, vm ) } /* istanbul ignore else */ if (process.env.NODE_ENV !== 'production') { // 代理 initProxy(vm) } else { vm._renderProxy = vm } // 生命周期 initLifecycle(vm) // emit on 事件 initEvents(vm) // 处理render vdom initRender(vm) callHook(vm, 'beforeCreate') // 处理Injections initInjections(vm) // resolve injections before data/props // 双向数据绑定，监听订阅 initState(vm) initProvide(vm) // resolve provide after data/props callHook(vm, 'created') /* istanbul ignore if */ if (process.env.NODE_ENV !== 'production' && config.performance && mark) { vm._name = formatComponentName(vm, false) mark(endTag) measure(`vue ${vm._name} init`, startTag, endTag) } // 渲染到dom if (vm.$options.el) { vm.$mount(vm.$options.el) } } }

export function callHook (vm: Component, hook: string) { // disable dep collection when invoking lifecycle hooks pushTarget() //执行对象的周期函数，周期函数最后被处理成数组 const handlers = vm.$options[hook] const info = `${hook} hook` if (handlers) { for (let i = 0, j = handlers.length; i < j; i++) { invokeWithErrorHandling(handlers[i], vm, null, vm, info) } } if (vm._hasHookEvent) { vm.$emit('hook:' + hook) } popTarget()

if (!(key in vm)) { proxy(vm, `_props`, key) }

export function initState (vm: Component) { 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) } }

Vue.prototype.$set = set Vue.prototype.$delete = del