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How to use hoistStatic method in Playwright Internal

Best JavaScript code snippet using playwright-internal

transform.js

Source:transform.js

...133function transform(root, options) {134    var context = createTransformContext(root, options);135    traverseNode(root, context);136    if (options.hoistStatic) {137        hoistStatic_1.hoistStatic(root, context);138    }139    finalizeRoot(root, context);140}141exports.transform = transform;142function finalizeRoot(root, context) {143    var helper = context.helper;144    var children = root.children;145    var child = children[0];146    if (children.length === 1) {147        if (hoistStatic_1.isSingleElementRoot(root, child) && child.codegenNode) {148            var codegenNode = child.codegenNode;149            if (codegenNode.type !== 20) {150                if (codegenNode.callee === runtimeHelpers_1.WITH_DIRECTIVES) {151                    codegenNode.arguments[0].callee = helper(runtimeHelpers_1.CREATE_BLOCK);...

withAuth.js

Source:withAuth.js

...78  const NewComponent = higherOrderComponent(BaseComponent);79  hoistNonReactStatic(NewComponent, BaseComponent);80  return NewComponent;81};...

compile.js

Source:compile.js

1import * as runtimeDom from '@vue/runtime-dom';2import { compile, parse, generate } from '@vue/compiler-dom';3import { extend, generateCodeFrame } from '@vue/shared';4//import { generate } from './genCode.js';5const compileCache = Object.create(null);6function compileToFunction(template, options) {7  const key = template;8  const cached = compileCache[key];9  if (cached) {10    return cached;11  }12  const { code, ast } = compile(13      template,14      extend(15          {16            hoistStatic: true,17            onError(err) {18              if (process.env.NODE_ENV !== 'production') {19                const message = `Template compilation error: ${ err.message }`;20                const codeFrame = err.loc && generateCodeFrame(template, err.loc.start.offset, err.loc.end.offset);21                console.warn(codeFrame ? `${ message }\n${ codeFrame }` : message);22              } else {23                /* istanbul ignore next */24                throw err;25              }26            },27          },28          options,29      ),30  );31//  let render = new Function('Vue', code)(runtimeDom);32//  render._rc = true;33  setPatchFlag(ast);34  const t = generate(ast, { prefixIdentifiers: false });35  let render1 = new Function('Vue', t.code)(runtimeDom);36  render1._rc = true;37  return ( compileCache[key] = render1 );38}39function parseAst(template, options) {40  return parse(template, extend({}, options));41}42// å»é¤ä¼å43function setPatchFlag(node) {44  if (node.codegenNode) {45    node.codegenNode.patchFlag = '-2 /* BAIL */';46  }47  node.children?.forEach(setPatchFlag);48}...

04-transform.js

Source:04-transform.js

1export function transform(root: RootNode, options: TransformOptions) {2    const context = createTransformContext(root, options)3    traverseNode(root, context)4    if (options.hoistStatic) {5      hoistStatic(root, context)6    }7    if (!options.ssr) {8      createRootCodegen(root, context)9    }10    // finalize meta information11    root.helpers = [...context.helpers.keys()]12    root.components = [...context.components]13    root.directives = [...context.directives]14    root.imports = context.imports15    root.hoists = context.hoists16    root.temps = context.temps17    root.cached = context.cached18  19    if (__COMPAT__) {...

ssr.js

Source:ssr.js

...17        <WrappedComponent {...this.props}/>18      );19    }20  }21  const HoistComponent = hoistStatic(Hoc, WrappedComponent);22  hook.registerComponent(corenID, HoistComponent);23  return HoistComponent;...

wrapDOM.js

Source:wrapDOM.js

...11            </Wrapper>12          );13        }14      }15      return hoistStatic(Hoc, WrappedComponent);16    }17    console.warn('Because `process.env.isBrowser` is false, wrapDOM will not work');18    return WrappedComponent;19  };...

hoist-static.mjs

Source:hoist-static.mjs

...10/// ...11/// export default class Home extends Component {12/// }13///14/// hoistStatic(Home, Layout)...

index.js

Source:index.js

1import renderMore from './renderMore';2import formatVal from './formatVal';3import validator from './validator';4import wrap from './wrap';5import validateBone from './validateBone';6import hoistStatic from './hoistStatic';7// export { default as controlled } from './controlled'; // zhenchao.sun8export default {9  renderMore,10  formatVal,11  validator,12  wrap,13  validateBone,14  hoistStatic,...

Using AI Code Generation

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  await page.screenshot({ path: `example.png` });7  await browser.close();8})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const page = await browser.newPage();5  await page.evaluate(() => {6    const button = document.createElement('button');7    button.textContent = 'Click me';8    document.body.appendChild(button);9    button.addEventListener('click', () => {10      alert('Clicked');11    });12  });13  await page.click('button');14  await browser.close();15})();16### `browserType.launch([options])`

Using AI Code Generation

1const { chromium } = require('playwright');2const { Page } = require('playwright/lib/server/page');3(async () => {4  const browser = await chromium.launch({ headless: false });5  const page = await browser.newPage();6  const { context } = page;7  const { _pageBindings } = context;8  const { _page } = _pageBindings;9  const { _pageDelegate } = _page;10  const { _delegate } = _pageDelegate;11  const { _pageOrError } = _delegate;12  const { _page } = _pageOrError;13  const { _delegate } = _page;14  const { _pageDelegate } = _delegate;15  const { _delegate } = _pageDelegate;16  const { _delegate } = _delegate;17  const { _page } = _delegate;18  const { _pageDelegate } = _page;19  const { _delegate } = _pageDelegate;20  const { _delegate } = _delegate;21  const { _page } = _delegate;22  const { _pageDelegate } = _page;23  const { _delegate } = _pageDelegate;24  const { _delegate } = _delegate;25  const { _page } = _delegate;26  const { _pageDelegate } = _page;27  const { _delegate } = _pageDelegate;28  const { _delegate } = _delegate;29  const { _page } = _delegate;30  const { _pageDelegate } = _page;31  const { _delegate } = _pageDelegate;32  const { _delegate } = _delegate;33  const { _page } = _delegate;34  const { _pageDelegate } = _page;35  const { _delegate } = _pageDelegate;36  const { _delegate } = _delegate;37  const { _page } = _delegate;38  const { _pageDelegate } = _page;39  const { _delegate } = _pageDelegate;40  const { _delegate } = _delegate;41  const { _page } = _delegate;42  const { _pageDelegate } = _page;43  const { _delegate } = _pageDelegate;44  const { _delegate } = _delegate;45  const { _page } = _delegate;46  const { _pageDelegate } = _page;47  const { _delegate } = _pageDelegate;48  const { _

Using AI Code Generation

1const { chromium } = require('playwright');2const { hoistStatic } = require('playwright/lib/server/supplements/recorder/recorderSupplement');3const { RecorderSupplement } = require('playwright/lib/server/supplements/recorder/recorderSupplement');4const { RecorderController } = require('playwright/lib/server/supplements/recorder/recorderController');5const { RecorderServer } = require('playwright/lib/server/recorderServer');6const { RecorderApp } = require('playwright/lib/server/recorder/recorderApp');7const { RecorderModel } = require('playwright/lib/server/recorder/recorderModel');8const { RecorderSupplementWrapper } = require('playwright/lib/server/supplements/recorder/recorderSupplementWrapper');9const { Context } = require('playwright/lib/server/chromium/crBrowser');10const { Page } = require('playwright/lib/server/chromium/crPage');11const { Frame } = require('playwright/lib/server/chromium/crFrame');12const { ElementHandle } = require('playwright/lib/server/chromium/crElementHandle');13const { RecorderSupplement: RecorderSupplement1 } = require('playwright/lib/server/supplements/recorder/recorderSupplement');14const { RecorderController: RecorderController1 } = require('playwright/lib/server/supplements/recorder/recorderController');15const { RecorderServer: RecorderServer1 } = require('playwright/lib/server/recorderServer');16const { RecorderApp: RecorderApp1 } = require('playwright/lib/server/recorder/recorderApp');17const { RecorderModel: RecorderModel1 } = require('playwright/lib/server/recorder/recorderModel');18const { RecorderSupplementWrapper: RecorderSupplementWrapper1 } = require('playwright/lib/server/supplements/recorder/recorderSupplementWrapper');19const { Context: Context1 } = require('playwright/lib/server/chromium/crBrowser');20const { Page: Page1 } = require('playwright/lib/server/chromium/crPage');21const { Frame: Frame1 } = require('playwright/lib/server/chromium/crFrame');22const { ElementHandle: ElementHandle1 } = require('playwright/lib/server/chromium/crElementHandle');23const { RecorderSupplement: RecorderSupplement2 } = require('playwright/lib/server/supplements/recorder/recorderSupplement');24const { RecorderController: RecorderController2 } = require('playwright

Using AI Code Generation

1const { Playwright } = require('playwright');2const { hoistStatic } = require('playwright/lib/utils/utils');3const { chromium } = require('playwright-chromium');4const { firefox } = require('playwright-firefox');5const { webkit } = require('playwright-webkit');6const playwright = new Playwright();7hoistStatic(playwright, chromium);8hoistStatic(playwright, firefox);9hoistStatic(playwright, webkit);10module.exports = playwright;11const { chromium } = require('playwright-chromium');12const { firefox } = require('playwright-firefox');13const { webkit } = require('playwright-webkit');14const { Playwright } = require('playwright');15const { hoistStatic } = require('playwright/lib/utils/utils');16const playwright = new Playwright();17hoistStatic(playwright, chromium);18hoistStatic(playwright, firefox);19hoistStatic(playwright, webkit);20(async () => {21  const browser = await playwright.chromium.launch();22  const context = await browser.newContext();23  const page = await context.newPage();24  await page.screenshot({ path: 'example.png' });25  await browser.close();26})();27[Apache 2.0](./LICENSE)

Using AI Code Generation

1const { PlaywrightInternal } = require('@playwright/test');2const { test } = require('@playwright/test');3const path = require('path');4const fs = require('fs');5const { chromium } = require('playwright');6const { expect } = require('@playwright/test');7const { describe } = require('mocha');8const { hoistStatic } = PlaywrightInternal;9describe('My first test', () => {10  test('first test', async ({ page }) => {11    const title = page.locator('text=Create a browser automation test');12    await expect(title).toBeVisible();13  });14});15const { test } = require('@playwright/test');16const path = require('path');17const fs = require('fs');18const { chromium } = require('playwright');19const { expect } = require('@playwright/test');20const { describe } = require('mocha');21describe('My first test', () => {22  test('first test', async ({ page }) => {23    const title = page.locator('text=Create a browser automation test');24    await expect(title).toBeVisible();25  });26});

Using AI Code Generation

1const { test } = require('@playwright/test');2const { hoistStatic } = require('@playwright/test/lib/server/frames');3test('Test', async ({ page }) => {4  await page.click('text=Docs');5  hoistStatic(frame, 'window');6  const title = await frame.evaluate(() => window.document.title);7  console.log(title);8});9const { test } = require('@playwright/test');10const { hoistStatic } = require('@playwright/test/lib/server/frames');11test('Test', async ({ page }) => {12  await page.click('text=Docs');13  hoistStatic(frame, 'window');14  const title = await frame.evaluate(() => window.document.title);15  console.log(title);16});17const { test } = require('@playwright/test');18const { hoistStatic } = require('@playwright/test/lib/server/frames');19test('Test', async ({ page }) => {20  await page.click('text=Docs');21  hoistStatic(frame, 'window');22  const title = await frame.evaluate(() => window.document.title);23  console.log(title);24});25const { test } = require('@playwright/test');26const { hoistStatic } = require('@playwright/test/lib/server/frames');27test('Test', async ({ page }) => {28  await page.goto('https

Using AI Code Generation

1const { hoistStatic } = require('@playwright/test/lib/utils/hoist');2const { testInfo, expect } = require('@playwright/test/lib/utils/testInfo');3const { test } = require('@playwright/test/lib/test');4const { expect } = require('@playwright/test/lib/utils/expect');5const { expect } = require('@playwright/test/lib/utils/expect');6const { expect } = require('@playwright/test/lib/utils/expect');7const { expect } = require('@playwright/test/lib/utils/expect');8const { expect } = require('@playwright/test/lib/utils/expect');9const { expect } = require('@playwright/test/lib/utils/expect');10const { expect } = require('@playwright/test/lib/utils/expect');11const { expect } = require('@playwright/test/lib/utils/expect');12const { expect } = require('@playwright/test/lib/utils/expect');13const { expect } = require('@playwright/test/lib/utils/expect');

Using AI Code Generation

1const { hoistStatic } = require('@playwright/test/lib/utils');2const { chromium } = require('playwright');3const { expect } = require('chai');4const { describe, it } = require('mocha');5hoistStatic(chromium, Chromium);6describe('Playwright', async () => {7    it('should open browser', async () => {8        const browser = await Chromium.launch();9        const context = await browser.newContext();10        const page = await context.newPage();11        const title = await page.title();12        expect(title).to.equal('Playwright');13    });14});

Using AI Code Generation

1const { chromium } = require('playwright');2const { hoistStatic } = require('playwright-core/lib/server/hoist');3(async () => {4    const browser = await chromium.launch({ headless: false });5    const context = await browser.newContext();6    const server = await hoistStatic(__dirname, {7    });8    const page = await context.newPage();9    await page.screenshot({ path: `example.png` });10    await browser.close();11    await server.stop();12})();

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

How to run a list of test suites in a single file concurrently in jest?

Running Playwright in Azure Function

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];
}

https://stackoverflow.com/questions/72044959/is-it-possible-to-get-the-selector-from-a-locator-object-in-playwright

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

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

Assuming you are not running test with the --runinband flag, the simple answer is yes but it depends ????

There is a pretty comprehensive GitHub issue jest#6957 that explains certain cases of when tests are run concurrently or in parallel. But it seems to depend on a lot of edge cases where jest tries its best to determine the fastest way to run the tests given the circumstances.

To my knowledge there is no way to force jest to run in parallel.

Aside

Have you considered using playwright instead of puppeteer with jest? Playwright has their own internally built testing library called @playwright/test that is used in place of jest with a similar API. This library allows for explicitly defining test groups in a single file to run in parallel (i.e. test.describe.parallel) or serially (i.e. test.describe.serial). Or even to run all tests in parallel via a config option.

// parallel
test.describe.parallel('group', () => {
  test('runs in parallel 1', async ({ page }) => {});
  test('runs in parallel 2', async ({ page }) => {});
});

// serial
test.describe.serial('group', () => {
  test('runs first', async ({ page }) => {});
  test('runs second', async ({ page }) => {});
});

https://stackoverflow.com/questions/73497773/how-to-run-a-list-of-test-suites-in-a-single-file-concurrently-in-jest

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})

https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

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