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How to use legacyRenderSubtreeIntoContainer method in Playwright Internal
Best JavaScript code snippet using playwright-internal
ReactDOMLegacy.js
Source:ReactDOMLegacy.js 
...76 }77 : undefined,78 );79}80function legacyRenderSubtreeIntoContainer(81 parentComponent: ?React$Component<any, any>,82 children: ReactNodeList,83 container: Container,84 forceHydrate: boolean,85 callback: ?Function,86) {87 // TODO: Without `any` type, Flow says "Property cannot be accessed on any88 // member of intersection type." Whyyyyyy.89 let root: RootType = (container._reactRootContainer: any);90 let fiberRoot;91 if (!root) {92 // Initial mount93 // containeræReactDOM.renderç第äºä¸ªåæ°ï¼å³åºç¨æè½½çDOMèç¹ï¼94 root = container._reactRootContainer = legacyCreateRootFromDOMContainer(95 container,96 forceHydrate,97 );98 fiberRoot = root._internalRoot;99 if (typeof callback === 'function') {100 const originalCallback = callback;101 callback = function() {102 const instance = getPublicRootInstance(fiberRoot);103 originalCallback.call(instance);104 };105 }106 // Initial mount should not be batched.107 unbatchedUpdates(() => {108 updateContainer(children, fiberRoot, parentComponent, callback);109 });110 } else {111 fiberRoot = root._internalRoot;112 if (typeof callback === 'function') {113 const originalCallback = callback;114 callback = function() {115 const instance = getPublicRootInstance(fiberRoot);116 originalCallback.call(instance);117 };118 }119 // Update120 updateContainer(children, fiberRoot, parentComponent, callback);121 }122 return getPublicRootInstance(fiberRoot);123}124export function findDOMNode(125 componentOrElement: Element | ?React$Component<any, any>,126): null | Element | Text {127 if (componentOrElement == null) {128 return null;129 }130 if ((componentOrElement: any).nodeType === ELEMENT_NODE) {131 return (componentOrElement: any);132 }133 return findHostInstance(componentOrElement);134}135export function hydrate(136 element: React$Node,137 container: Container,138 callback: ?Function,139) {140 invariant(141 isValidContainer(container),142 'Target container is not a DOM element.',143 );144 // TODO: throw or warn if we couldn't hydrate?145 return legacyRenderSubtreeIntoContainer(146 null,147 element,148 container,149 true,150 callback,151 );152}153export function render(154 element: React$Element<any>,155 container: Container,156 callback: ?Function,157) {158 invariant(159 isValidContainer(container),160 'Target container is not a DOM element.',161 );162 return legacyRenderSubtreeIntoContainer(163 null,164 element,165 container,166 false,167 callback,168 );169}170export function unstable_renderSubtreeIntoContainer(171 parentComponent: React$Component<any, any>,172 element: React$Element<any>,173 containerNode: Container,174 callback: ?Function,175) {176 invariant(177 isValidContainer(containerNode),178 'Target container is not a DOM element.',179 );180 invariant(181 parentComponent != null && hasInstance(parentComponent),182 'parentComponent must be a valid React Component',183 );184 return legacyRenderSubtreeIntoContainer(185 parentComponent,186 element,187 containerNode,188 false,189 callback,190 );191}192export function unmountComponentAtNode(container: Container) {193 invariant(194 isValidContainer(container),195 'unmountComponentAtNode(...): Target container is not a DOM element.',196 );197 if (container._reactRootContainer) {198 // Unmount should not be batched.199 unbatchedUpdates(() => {200 legacyRenderSubtreeIntoContainer(null, null, container, false, () => {201 // $FlowFixMe This should probably use `delete container._reactRootContainer`202 container._reactRootContainer = null;203 unmarkContainerAsRoot(container);204 });205 });206 // If you call unmountComponentAtNode twice in quick succession, you'll207 // get `true` twice. That's probably fine?208 return true;209 } else {210 return false;211 }...
ReactDOM.render.js
Source:ReactDOM.render.js
12 ReactDOM.render: function (element, container, callback) {3 return legacyRenderSubtreeIntoContainer(null, element, container, false, callback);4 },56function legacyRenderSubtreeIntoContainer(parentComponent, children, container, forceHydrate, callback) {7 8 // åå§åæ¶9 // parentComponent null10 // children App11 // container div#app DOMå
ç´ 12 // forceHydrate false13 // callback ä¸è§£é1415 var root = container._reactRootContainer; //undefined16 if (!root) {17 // Initial mount18 // é¦æ¬¡æ¸²æ19 // çæä¸ä¸ª ReactRoot å®ä¾ï¼æè½½å° container ç _reactRootContainer å±æ§ä¸20 root = container._reactRootContainer = legacyCreateRootFromDOMContainer(container, forceHydrate);
...
react-dom.js
Source:react-dom.js
...16 }17 },18 // ...19 hydrate(element: React$Node, container: DOMContainer, callback: ?Function) {20 return legacyRenderSubtreeIntoContainer(21 null,22 element,23 container,24 true,25 callback26 )27 },28 render(29 element: React$Element<any>,30 container: DOMContainer,31 callback: ?Function32 ) {33 return legacyRenderSubtreeIntoContainer(34 null,35 // EXPLAIN React.CreateElement36 element,37 // document.getElementById('app')38 container,39 false,40 callback41 )42 },43 unstable_batchedUpdates: batchedUpdates,44 unstable_interactiveUpdates: interactiveUpdates,45 flushSync: flushSync46 // ...47}
index.js
Source:index.js
1import { legacyRenderSubtreeIntoContainer } from "./ReactDOMLegacy";2export function render(element, container) {3 return legacyRenderSubtreeIntoContainer(null, element, container)...
Using AI Code Generation
1const playwright = require('playwright');2(async () => {3 const browser = await playwright.chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 const element = await page.$('input[name="q"]');7 await page.legacyRenderSubtreeIntoContainer(element);8 await page.screenshot({ path: 'google.png' });9 await browser.close();10})();
Using AI Code Generation
1const playwright = require('playwright');2const { legacyRenderSubtreeIntoContainer } = playwright.internal;3const { chromium } = playwright;4(async () => {5 const browser = await chromium.launch();6 const context = await browser.newContext();7 const page = await context.newPage();8 await page.setContent('<div id="container"></div>');9 await legacyRenderSubtreeIntoContainer(page, <div>hello</div>, document.querySelector('#container'));10 await browser.close();11})();12playwright.internal.legacyRenderSubtreeIntoContainer = legacyRenderSubtreeIntoContainer;13playwright.internal.legacyRenderSubtreeIntoContainer = legacyRenderSubtreeIntoContainer;14const { chromium } = require('playwright');15(async () => {16 const browser = await chromium.launch();17 const context = await browser.newContext({ browserContextOptions: { 'user-data-dir': './mydir' } });18 const page = await context.newPage();19})();
Using AI Code Generation
1const legacyRenderSubtreeIntoContainer = require('playwright').internal.legacyRenderSubtreeIntoContainer;2const React = require('react');3const ReactDOM = require('react-dom');4const App = () => {5 return <div>Hello World</div>;6};7legacyRenderSubtreeIntoContainer(null, <App />, document.body);8const { test, expect } = require('@playwright/test');9test('should render a React app', async ({ page }) => {10 await page.goto('test.js');11 const text = await page.innerText('body');12 expect(text).toBe('Hello World');13});
Using AI Code Generation
1const playwright = require('playwright');2(async () => {3 const browser = await playwright.chromium.launch();4 const page = await browser.newPage();5 const component = await page.$('#component');6 await page.evaluate(component => {7 const { render, unmountComponentAtNode } = require('react-dom');8 const { legacyRenderSubtreeIntoContainer } = require('playwright-core/lib/server/dom');9 const { Component } = require('react');10 class MyComponent extends Component {11 render() {12 return <div>Hello {this.props.name}</div>;13 }14 }15 const container = document.createElement('div');16 component.appendChild(container);17 legacyRenderSubtreeIntoContainer(null, <MyComponent name="John" />, container);18 }, component);19 await page.screenshot({ path: 'example.png' });20 await browser.close();21})();22import { chromium } from 'playwright';23(async () => {24 const browser = await chromium.launch();25 const page = await browser.newPage();26 const component = await page.$('#component');27 await page.evaluate(component => {28 const { render, unmountComponentAtNode } = require('react-dom');29 const { legacyRenderSubtreeIntoContainer } = require('playwright-core/lib/server/dom');30 const { Component } = require('react');31 class MyComponent extends Component {32 render() {33 return <div>Hello {this.props.name}</div>;34 }35 }36 const container = document.createElement('div');37 component.appendChild(container);38 legacyRenderSubtreeIntoContainer(null, <MyComponent name="John" />, container);39 }, component);40 await page.screenshot({ path: 'example.png' });41 await browser.close();42})();
Using AI Code Generation
1const playwright = require('playwright');2const { legacyRenderSubtreeIntoContainer } = require('playwright/lib/server/dom');3const { parse } = require('playwright/lib/server/common/html');4(async () => {5 const browser = await playwright.firefox.launch();6 const context = await browser.newContext();7 const page = await context.newPage();8 const { root, shadowRoots } = await page.evaluateHandle(() => {9 const div = document.createElement('div');10 div.attachShadow({ mode: 'open' });11 document.body.appendChild(div);12 return {13 };14 });15 await legacyRenderSubtreeIntoContainer(16 parse(`<div>hello</div>`),17 );18 await page.screenshot({ path: 'example.png' });19 await browser.close();20})();21{22 "dependencies": {23 },24 "devDependencies": {},25 "scripts": {26 },27}28 at ExecutionContext._evaluateInternal (/Users/username/Projects/playwright-test/node_modules/playwright/lib/server/common/ExecutionContext.js:217:19)29 at processTicksAndRejections (internal/process/task_queues.js:97:5)30 at async ExecutionContext.evaluate (/Users/username/Projects/playwright-test/node_modules/playwright/lib/server/common/ExecutionContext.js:106:16)
Using AI Code Generation
1const { legacyRenderSubtreeIntoContainer } = require('playwright/lib/server/dom.js');2const { createContainer } = require('playwright/lib/server/dom.js');3const container = createContainer();4const container2 = createContainer();5legacyRenderSubtreeIntoContainer(container, <div>Test</div>, null);6legacyRenderSubtreeIntoContainer(container2, <div>Test2</div>, null);7const { renderSubtreeIntoContainer } = require('playwright/lib/server/dom.js');8const container = createContainer();9renderSubtreeIntoContainer(container, <div>Test</div>, null);10const { render } = require('playwright/lib/server/dom.js');11render(<div>Test</div>, null);
Using AI Code Generation
1legacyRenderSubtreeIntoContainer(null, <Component />, document.body);2legacyRenderSubtreeIntoContainer(null, <Component />, document.body);3let page;4beforeEach(async () => {5 const browser = await chromium.launch();6 const context = await browser.newContext();7 page = await context.newPage();8});9afterEach(async () => {10 await page.close();11});12let page;13beforeEach(async () => {14 const browser = await chromium.launch();15 const context = await browser.newContext();16 page = await context.newPage();17});18afterEach(async () => {19 await page.close();20});
Using AI Code Generation
1const playwright = require('playwright');2const { LegacyRoot } = playwright;3module.exports = async (page, selector, component) => {4 const handle = await page.$(selector);5 const root = new LegacyRoot(page, handle);6 await root.renderSubtreeIntoContainer(component);7};8const { test, expect } = require('@playwright/test');9const { render } = require('react-dom');10const { LegacyRoot } = require('playwright');11const legacyRenderSubtreeIntoContainer = require('./test');12test('test', async ({ page }) => {13 await legacyRenderSubtreeIntoContainer(page, '.navbar__inner', <div>Test</div>);14 const text = await page.innerText('.navbar__inner');15 expect(text).toBe('Test');16});
StackOverFlow community discussions
Questions
Discussion
Is it possible to get the selector from a locator object in playwright?
firefox browser does not start in playwright
Running Playwright in Azure Function
firefox browser does not start in playwright
How to run a list of test suites in a single file concurrently in jest?
Jest + Playwright - Test callbacks of event-based DOM library
Well this is one way, but not sure if it will work for all possible locators!.
// Get a selector from a playwright locator
import { Locator } from "@playwright/test";
export function extractSelector(locator: Locator) {
const selector = locator.toString();
const parts = selector.split("@");
if (parts.length !== 2) { throw Error("extractSelector: susupect that this is not a locator"); }
if (parts[0] !== "Locator") { throw Error("extractSelector: did not find locator"); }
return parts[1];
}
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