How to use ensureRenderer method in Playwright Internal

Best JavaScript code snippet using playwright-internal

vnodeToDom.js

Source:vnodeToDom.js Github

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...12app.mount('#app')13/​* 创建 app 对象和重写 app.mount 方法 */​14const createApp = ((...args) => {15 /​/​ 创建 app 对象16 const app = ensureRenderer().createApp(...args)17 const { mount } = app18 /​/​ 重写 mount 方法19 app.mount = (containerOrSelector) => {20 /​/​ 标准化容器21 const container = normalizeContainer(containerOrSelector)22 if (!container)23 return24 const component = app._component25 /​/​ 如组件对象没有定义 render 函数和 template 模板，则取容器的 innerHTML 作为组件模板内容26 if (!isFunction(component) && !component.render && !component.template) {27 component.template = container.innerHTML28 }29 /​/​ 挂载前清空容器内容30 container.innerHTML = ''31 /​/​ 真正的挂载32 return mount(container)33 }34 return app35})36/​* ensureRenderer() 用来创建一个渲染器对象，它的内部代码是这样的： */​37/​/​ 渲染相关的一些配置，比如更新属性的方法，操作 DOM 的方法38const rendererOptions = {39 patchProp,40 ...nodeOps41}42let renderer43/​/​ 延时创建渲染器，当用户只依赖响应式包的时候，可以通过 tree-shaking 移除核心渲染逻辑相关的代码44function ensureRenderer() {45 return renderer || (renderer = createRenderer(rendererOptions))46}47function createRenderer(options) {48 return baseCreateRenderer(options)49}50function baseCreateRenderer(options) {51 function render(vnode, container) {52 /​/​ 组件渲染的核心逻辑53 }54 return {55 render,56 createApp: createAppAPI(render)57 }58}...

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render.js

Source:render.js Github

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1import { isObject } from './​utils.js';2import { watchEffect } from './​reactive.js';3function createAppAPI (render) {4 /​/​ 在这里安装插件5 const installPlugins = new Set();6 return function (context) {7 /​/​ 返回Vue实例8 return {9 use(plugin, ...options) {},10 mixin(mixin) {},11 component(name, component) {},12 directive(name, directive) {},13 mount (container) {14 container = new String(container);15 /​/​ vue3新出的Composition API的setup，这个方法会在beforeCreate之前执行16 /​/​ 第一个形参为props，第二个为上下文context,返回值为可以挂载模板上17 const getVnode = renderComponentRoot(context);18 /​/​ 数据改变页面变化，用了watchEffect，重新对页面渲染19 watchEffect(() => {20 const vnode = getVnode();21 /​/​ 将上下文存入虚拟节点便于后序使用22 vnode.appContext = context;23 context.subTree = vnode;24 /​/​ 第一个形参表示根节点的虚拟dom，第二个形参代表挂载到的容器的id25 render(vnode, container)26 }) 27 }28 }29 }30}31/​/​ 这里面会做具体的虚拟dom的生成,32function renderComponentRoot ({ setup }) {33 return setup && setup(34 new Proxy({}, {}),35 { attrs: null,36 emit: null,37 expose: () => {},38 slots: null,39 props: null40 })41}42/​/​ 可以自定义的渲染函数，通过暴露像querySelector这样的选项，进行dom操作43function createRenderer ({ querySelector, createElement, insert }) {44 const render = (vnode, container) => {45 /​/​ 这里进行新旧节点的比较46 function patch (oldVnode, newVnode, container) {47 if (oldVnode) {48 /​/​ 这里进行更新dom操作，最长子序列比较49 } else {50 /​/​ 初始化dom51 const parent = querySelector(container);52 /​/​ 将旧节点的虚拟dom缓存起来53 container.vnode = vnode;54 const child = createElement(vnode.tag);55 if (typeof vnode.children === 'string') { parent.innerHTML = vnode.children }56 else { }57 insert(child, parent);58 }59 }60 patch(container._vnode || null, vnode, container);61 }62 return {63 render,64 hydrate: {},65 createApp: createAppAPI(render)66 }67}68/​/​ vue3有默认的渲染选项，这里是我简单自定义的选项69const ensureRenderer = () => createRenderer({70 querySelector (sel) {71 return document.querySelector(sel);72 },73 createElement (tag) {74 return document.createElement(tag);75 },76 insert (child, parent) {77 if (parent) {78 parent.appendChild(child);79 }80 }81})82function h (tag, attrs, children) {83 if (isObject(tag)) {84 /​/​ TODO 这里是组件生成vnode的逻辑85 return tag;86 } else if (typeof tag === 'string') {87 /​/​ 这是自己写的骚操作不是源码88 if (typeof children === 'string') {89 children = new Function('obj',90 'with (obj) {return `'+ children.replace(/​\{\{(.+)?\}\}/​g, '${$1}') + '`}')(attrs.props);91 }92 return {93 tag,94 attrs,95 children96 }97 }98}99export {100 ensureRenderer,101 createRenderer,102 h...

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vue3mock.js

Source:vue3mock.js Github

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1/​/​ 创建 app2function createApp (...args) {3 const app = ensureRenderer().createApp(...args)4 const { mount } = app5 app.mount = (containerOrSelector) => {6 const container = document.querySelector(containerOrSelector)7 const proxy = mount(container)8 container.removeAttribute('v-cloak')9 container.setAttribute('data-v-app', '')10 return proxy11 }12 return app13}14/​/​ 实现dom 操作，属性patch的方法15const rendererOptions = {16 patchProp () {},17 forcePatchProp () {},18 nodeOps: {19 insert () {},20 remove () {}21 }22}23/​/​ 创建渲染器24function ensureRenderer() {25 return createRenderer(rendererOptions)26}27/​/​ 通过 patch 进行渲染28const render = (vnode, container) => {29 if (vnode == null) {30 } else {31 patch(container._vnode, vnode, container)32 }33 container._vnode = vnode34}35function createAppAPI (render) {36 /​/​ 创建 app创建，示例全局的属性37 return function createApp (rootComponent, rootProps = null) {38 const app = {...

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runtime-canvas.js

Source:runtime-canvas.js Github

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...54const patchProp = (el, key, preValue, nextValue) => {55 el[key] = nextValue56}57let renderer58function ensureRenderer() {59 return renderer || createRenderer({60 ...nodeOps,61 patchProp62 })63}64export const createApp = (...args) => {65 const app = ensureRenderer().createApp(...args);66 return app;...

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vue3中的柯里化.js

Source:vue3中的柯里化.js Github

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...9 patchProp,10 ...nodeOps11}12let renderer13function ensureRenderer() {14 return renderer || (renderer = createRenderer(rendererOptions))15}16function createRenderer(options) {17 return baseCreateRenderer(options)18}19function baseCreateRenderer(options) {20 function render(vnode, container) {21 /​/​ 组件渲染的核心逻辑22 }23 return {24 render,25 createApp: createAppApi(render)26 }27}28function createAppApi(render) {29 return function createApp(rootComponent, rootProps = null) {30 const app = {31 _component: rootComponent,32 _props: rootProps,33 mount(rootContainer) {34 const vnode = createVNode(rootComponent, rootProps)35 render(vnode, rootContainer)36 app._container = rootContainer37 return vnode._component.proxy38 }39 }40 return app41 }42}43const createApp = ((...args) => {44 const app = ensureRenderer().createApp(...args)45 const { mount } = app46 app.mount = (containerOrSelector) => {47 /​/​ ...48 }49 return app...

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runtime-dom.js

Source:runtime-dom.js Github

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...12 parent.appendChild(child)13 }14}15let renderer;16function ensureRenderer() {17 return renderer || createRenderer(rendererOptions)18}19function normalizeContainer(container) {20 const res = document.querySelector(container)21 return res22}23export const createApp = (...args) => {24 const app = ensureRenderer().createApp(...args);25 const {26 mount27 } = app;28 app.mount = (containerOrSelector) => {29 const container = normalizeContainer(containerOrSelector)30 const proxy = mount(container)31 return proxy32 }33 return app;...

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index.js

Source:index.js Github

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...7 ...nodeOps8}9/​/​ canvas 渲染器10let renderer11function ensureRenderer() {12 return renderer || (renderer = createRenderer(rendererOptions))13}14/​/​ console.log('renderer', renderer)15export const render = ((...args) => {16 ensureRenderer().render(...args)17})18export const createApp = (...args) => {19 const app = ensureRenderer().createApp(...args)20 /​/​ console.log('app', app)21 return app...

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vue.js

Source:vue.js Github

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1import { ensureRenderer } from './​runtimer-dom.js';2const createApp = (...args) => {3 const app = ensureRenderer().createApp(...args);4 const mount = app.mount;5 app.mount = el => {6 const container = document.querySelector(el);7 container.innerHTML = '';8 mount(container);9 };10 return app;11};...

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Using AI Code Generation

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1const { ensureRenderer } = require('playwright/​lib/​server/​browserContext');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 await ensureRenderer(context);7 await browser.close();8})();

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Using AI Code Generation

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1const { ensureRenderer } = require('playwright-core/​lib/​server/​browserContext');2const { chromium } = require('playwright-core');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 await ensureRenderer(context);7 await browser.close();8})();

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Using AI Code Generation

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1const playwright = require('playwright');2const { ensureRenderer } = require('playwright/​lib/​server/​browserContext');3(async () => {4 const browser = await playwright['chromium'].launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const renderer = await ensureRenderer(page);8 await renderer.evaluate(() => {9 console.log('Hello World');10 });11 await browser.close();12})();13const playwright = require('playwright');14const { ensureRenderer } = require('playwright/​lib/​server/​browserContext');15(async () => {16 const browser = await playwright['chromium'].launch();17 const context = await browser.newContext();18 const page = await context.newPage();19 const renderer = await ensureRenderer(page);20 const title = await renderer.evaluate(() => {21 return document.title;22 });23 console.log(`Title of the page is ${title}`);24 await browser.close();25})();26const playwright = require('playwright');27const { ensureRenderer } = require('playwright/​lib/​server/​browserContext');28(async () => {29 const browser = await playwright['chromium'].launch();30 const context = await browser.newContext();31 const page = await context.newPage();32 const renderer = await ensureRenderer(page);

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Using AI Code Generation

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1const { ensureRenderer } = require('playwright/​lib/​server/​browserContext.js');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 await page.screenshot({ path: 'google.png' });8 await ensureRenderer(context);9 await page.screenshot({ path: 'google.png' });10 await browser.close();11})();12const { chromium } = require('playwright');13const { ensureRenderer } = require('playwright/​lib/​server/​browserContext.js');14(async () => {15 const browser = await chromium.launch();16 const context = await browser.newContext();17 await ensureRenderer(context);18 const page = await context.newPage();19 await page.screenshot({ path: 'google.png' });20 await browser.close(

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Using AI Code Generation

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1const { ensureRenderer } = require('playwright/​lib/​server/​supplements/​recorder/​recorderApp');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6 await ensureRenderer(page);7 await page.click('text=Sign in');8 await page.fill('input[name="identifier"]', '

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Using AI Code Generation

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1const { ensureRenderer } = require('playwright/​lib/​server/​browserType');2(async () => {3 const browser = await ensureRenderer('chromium');4 const context = await browser.newContext();5 const page = await context.newPage();6 await page.screenshot({ path: 'example.png' });7 await browser.close();8})();

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Using AI Code Generation

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1const { ensureRenderer } = require('playwright/​lib/​server/​webkit');2const { webkit } = require('playwright');3(async () => {4 const browser = await webkit.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 await page.screenshot({ path: 'google.png' });8 await ensureRenderer(page);9 await page.screenshot({ path: 'google.png' });10 await browser.close();11})();12const { ensureRenderer } = require('playwright/​lib/​server/​webkit');13const { webkit } = require('playwright');14(async () => {15 const browser = await webkit.launch();16 const context = await browser.newContext();17 const page = await context.newPage();18 await page.screenshot({ path: 'google.png' });19 await ensureRenderer(page);20 await page.screenshot({ path: 'google.png' });21 await browser.close();22})();23const { ensureRenderer } = require('playwright/​lib/​server/​webkit');24const { webkit } = require('playwright');25(async () => {26 const browser = await webkit.launch();27 const context = await browser.newContext();28 const page = await context.newPage();29 await page.screenshot({ path: 'google.png' });30 await ensureRenderer(page);31 await page.screenshot({ path: 'google.png' });32 await browser.close();33})();34 at Playwright._onExit (C:\Users\Nikhil\Documents\playwright\playwright\lib\server\playwright.js:111:23)

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Using AI Code Generation

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1const { ensureRenderer } = require('playwright/​lib/​server/​browserType');2const { chromium } = require('playwright/​lib/​server/​chromium');3const { webkit } = require('playwright/​lib/​server/​webkit');4const { firefox } = require('playwright/​lib/​server/​firefox');5(async () => {6 const browserType = chromium;7 const browser = await browserType.launch();8 const context = await browser.newContext();9 const page = await context.newPage();10 const renderer = await ensureRenderer(browserType, page);11 console.log(renderer);12 await browser.close();13})();

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Using AI Code Generation

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1const { ensureRenderer } = require("playwright/​lib/​server/​browserType");2const { chromium } = require("playwright");3const browser = await chromium.launch();4const context = await browser.newContext();5const page = await context.newPage();6const renderer = await ensureRenderer(page);7console.log(renderer);8await browser.close();9const { ensureRenderer } = require("playwright/​lib/​server/​browserType");10const { chromium } = require("playwright");11const browser = await chromium.launch();12const context = await browser.newContext();13const page = await context.newPage();14const renderer = await ensureRenderer(page);15console.log(renderer);16await browser.close();17const { ensureRenderer } = require("playwright/​lib/​server/​browserType");18const { chromium } = require("playwright");19const browser = await chromium.launch();20const context = await browser.newContext();21const page = await context.newPage();22const renderer = await ensureRenderer(page);23console.log(renderer);24await browser.close();25const { ensureRenderer } = require("playwright/​lib/​server/​browserType");26const { chromium } = require("playwright");27const browser = await chromium.launch();28const context = await browser.newContext();29const page = await context.newPage();30const renderer = await ensureRenderer(page);31console.log(renderer);32await browser.close();33const { ensureRenderer } = require("playwright/​lib/​server/​browserType");34const { chromium } = require("playwright");35const browser = await chromium.launch();36const context = await browser.newContext();37const page = await context.newPage();38const renderer = await ensureRenderer(page);39console.log(renderer);40await browser.close();41const { ensureRenderer } = require("playwright/​lib/​server/​browserType");42const { chromium } = require("playwright");43const browser = await chromium.launch();44const context = await browser.newContext();45const page = await context.newPage();46const renderer = await ensureRenderer(page);47console.log(renderer);48await browser.close();

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Using AI Code Generation

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1const playwright = require('playwright');2const { ensureRenderer } = require('@playwright/​test/​lib/​server/​renderer');3const { createTestServer } = require('@playwright/​test/​lib/​test/​testServer');4const server = createTestServer();5server.PORT = 8080;6server.PREFIX = '';7server.CROSS_PROCESS_PREFIX = '';8(async () => {9 const renderer = await ensureRenderer({ playwright, server, isWorker: false, headful: true });10 console.log(renderer);11})();

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Playwright tutorial

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  11. Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
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