How to use getHostRootInstanceInContainer method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactMount.js

Source: ReactMount.js Github

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...34 );35 ReactUpdates.ReactReconcileTransaction.release(transaction);36}37function getTopLevelWrapperInContainer(container) {38 var root = getHostRootInstanceInContainer(container);39 return root ? root._hostContainerInfo._topLevelWrapper : null;40};41function getHostRootInstanceInContainer(container) {42 var rootEl = getReactRootElementInContainer(container);43 var prevHostInstance = rootEl && ReactDOMComponentTree.getInstanceFromNode(rootEl);44 return (45 prevHostInstance &&46 !prevHostInstance._hostParent ? prevHostInstance : null47 );48}49function getReactRootElementInContainer(container) {50 if (!container) {51 return null;52 }53 if (container.nodeType === DOC_NODE_TYPE) {54 return container.documentElement;55 } else {...

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flat1.js

Source: flat1.js Github

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...48/​* 校验 DOM 元素容器 */​49function isValidContainer(node) {/​* ... */​}50function isReactNode(node) {/​* ... */​}51/​* 从容器获取宿主根元素实例 */​52function getHostRootInstanceInContainer(container) {/​* ... */​}53/​* 从容器获取顶层包装类 */​54function getTopLevelWrapperInContainer(container) {/​* ... */​}55var topLevelRootCounter = 1;56var TopLevelWrapper = function () {57 this.rootID = topLevelRootCounter++;58};59TopLevelWrapper.prototype.isReactComponent = {};60if (process.env.NODE_ENV !== 'production') {61 TopLevelWrapper.displayName = 'TopLevelWrapper';62}63TopLevelWrapper.prototype.render = function () {64 return this.props.child;65};66TopLevelWrapper.isReactTopLevelWrapper = true;...

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getHostRootInstanceInContainer.js

Source: getHostRootInstanceInContainer.js Github

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1/​/​ document.getElmenetById('app')2/​/​ 3function getHostRootInstanceInContainer(container) {4 var rootEl = getReactRootElementInContainer(container); /​/​ null or document.documentElement5 var prevHostInstance = rootEl && ReactDOMComponentTree.getInstanceFromNode(rootEl);6 return prevHostInstance && !prevHostInstance._hostParent ? prevHostInstance : null;...

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getTopLevelWrapperInContainer.js

Source: getTopLevelWrapperInContainer.js Github

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1/​/​ document.getElmenetById('app')2function getTopLevelWrapperInContainer(container) {3 var root = getHostRootInstanceInContainer(container); /​/​ null4 return root ? root._hostContainerInfo._topLevelWrapper : null; /​/​ null...

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 const host = await page._delegate._getHostRootInstanceInContainer(page);7 console.log(host);8 await browser.close();9})();10{ _host: { _host: { _host: [Circular], _options: [Object] }, _options: { browser: [Object], context: [Object], page: [Object] } }, _options: { browser: { name: 'chromium', _options: [Object] }, context: {}, page: {} } }

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Using AI Code Generation

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1const {chromium} = require('playwright');2(async () => {3 const browser = await chromium.launch({headless: false});4 const context = await browser.newContext();5 const page = await context.newPage();6 const rootInstance = await page._delegate._delegate.getHostRootInstanceInContainer();7 console.log(rootInstance);8 await browser.close();9})();10{ _internal: { _ownerDocument: [Circular] }, _properties: Map {} }

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​dom');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 const rootInstance = getHostRootInstanceInContainer(page._delegate);8 const userAgent = await rootInstance.evaluate(() => navigator.userAgent);9 console.log(userAgent);10 await browser.close();11})();12Mozilla/​5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/​537.36 (KHTML, like Gecko) Chrome/​85.0.4183.83 Safari/​537.3613const iframeElement = page.locator('iframe');14const iframeRootInstance = await iframeElement.evaluateHandle(element => getHostRootInstanceInContainer(element._delegate));15const userAgent = await iframeRootInstance.evaluate(() => navigator.userAgent);16console.log(userAgent);17Mozilla/​5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/​537.36 (KHTML, like Gecko) Chrome/​85.0.4183.83 Safari/​537.3618const iframeElement = page.locator('iframe');19const iframeRootInstance = await iframeElement.evaluateHandle(element => element.contentDocument);20const userAgent = await iframeRootInstance.evaluate(() => navigator.userAgent);21console.log(userAgent);22Mozilla/​5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/​537.36 (KHTML, like Gecko) Chrome/​85.0.4183.83 Safari/​537.3623const iframeElement = page.locator('iframe');24const iframeRootInstance = await iframeElement.contentFrame().evaluateHandle(() => document);

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​frames');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 const rootInstance = getHostRootInstanceInContainer(page.mainFrame()._pageProxy._delegate);8 console.log(rootInstance);9 await browser.close();10})();11{12 _private: {13 _attributes: {},

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Using AI Code Generation

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1const playwright = require('playwright');2const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement');3(async () => {4 const browser = await playwright.chromium.launch();5 const page = await browser.newPage();6 const root = await getHostRootInstanceInContainer(page);7 console.log(root);8 await browser.close();9})();10{11 viewportSize: { width: 1280, height: 720 },12}13const playwright = require('playwright');14const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement');

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​dom.js');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch({ headless: false });5 const context = await browser.newContext();6 const page = await context.newPage();7 const elementHandle = await page.$('input');8 const rootInstance = getHostRootInstanceInContainer(elementHandle);9 console.log(rootInstance);10 await browser.close();11})();12{ _rootContainerInfo: { _internalInstanceHandle: [Object] },13 { current: [Circular],14 memoizedInteractions: Set {},15 pendingInteractionMap: Map {} },16 { _internalRoot: [Circular],

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('@playwright/​test/​lib/​server/​dom');2const { test } = require('@playwright/​test');3test('test', async ({ page }) => {4 const root = getHostRootInstanceInContainer(page);5 const iframe = root.querySelector('iframe');6 const iframeRoot = getHostRootInstanceInContainer(iframe);7 const childFrame = iframeRoot.querySelector('iframe');8 const childFrameRoot = getHostRootInstanceInContainer(childFrame);9 console.log(childFrameRoot);10});

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('@playwright/​test/​lib/​server/​frames');2const { Frame } = require('@playwright/​test/​lib/​server/​frames');3const { Page } = require('@playwright/​test/​lib/​server/​page');4const { BrowserContext } = require('@playwright/​test/​lib/​server/​browserContext');5const frame = new Frame(new Page(new BrowserContext()), null);6const frameElement = getHostRootInstanceInContainer(frame);7console.log(frameElement);8const { getHostRootInstanceInContainer } = require('@playwright/​test/​lib/​server/​frames');9const { Frame } = require('@playwright/​test/​lib/​server/​frames');10const { Page } = require('@playwright/​test/​lib/​server/​page');11const { BrowserContext } = require('@playwright/​test/​lib/​server/​browserContext');12const frame = new Frame(new Page(new BrowserContext()), null);13const frameElement = getHostRootInstanceInContainer(frame);14console.log(frameElement);15const frameElement = getHostRootInstanceInContainer(frame);16console.log(frameElement);17const frameElement = page.frames()[1].element();18console.log(frameElement);

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement.js');2const { chromium } = require('playwright');3const { createTestServer } = require('playwright-core/​lib/​utils/​testserver/​');4const { test, expect } = require('@playwright/​test');5test('test', async ({ page }) => {6 const server = await createTestServer();7 server.setRoute('/​test.html', (req, res) => {8 res.end(`<html><body><div id="test">Hello</​div></​body></​html>`);9 });10 await page.goto(server.PREFIX + '/​test.html');11 const root = await getHostRootInstanceInContainer(page, page

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StackOverFlow community discussions

Questions
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I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

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