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How to use unhideTextInstance method in Playwright Internal

Best JavaScript code snippet using playwright-internal

react-native-renderer.js

...313// Returns: void314// Input parameters:315//  textInstance: TextInstance,316//  text: string317export function unhideTextInstance(textInstance, text) {318  logNotImplemented('unhideTextInstance');319}320const HostConfig = {321  now: Date.now,322  323  createInstance: createInstance,324  createTextInstance: createTextInstance,325  appendInitialChild: appendInitialChild,326  finalizeInitialChildren: finalizeInitialChildren,327  getPublicInstance: getPublicInstance,328  getRootHostContext: getRootHostContext,329  getChildHostContext: getChildHostContext,330  331  prepareForCommit: prepareForCommit,...

magic-script-renderer.js

Source: magic-script-renderer.js

...281// Returns: void282// Input parameters:283//  textInstance: TextInstance,284//  text: string285function unhideTextInstance(textInstance, text) {286  logNotImplemented('unhideTextInstance');287}288const HostConfig = {289  now: Date.now,290  createInstance: createInstance,291  createTextInstance: createTextInstance,292  appendInitialChild: appendInitialChild,293  finalizeInitialChildren: finalizeInitialChildren,294  getPublicInstance: getPublicInstance,295  getRootHostContext: getRootHostContext,296  getChildHostContext: getChildHostContext,297  prepareForCommit: prepareForCommit,298  resetAfterCommit: resetAfterCommit,299  prepareUpdate: prepareUpdate,...

ReactKonvaHostConfig.js

Source: ReactKonvaHostConfig.js

...182        instance.show();183    }184}185exports.unhideInstance = unhideInstance;186function unhideTextInstance(textInstance, text) {187    // Noop188}189exports.unhideTextInstance = unhideTextInstance;190function clearContainer(container) {191    // Noop192}193exports.clearContainer = clearContainer;194function detachDeletedInstance() { }195exports.detachDeletedInstance = detachDeletedInstance;196const getCurrentEventPriority = () => constants_1.DefaultEventPriority;...

index.js

Source: index.js

...157  },158  unhideInstance(instance, props) {159    console.log("unhideInstance", instance, props);160  },161  unhideTextInstance(textInstance, text) {162    console.log("unhideTextInstance", textInstance, text);163  },...

ReactPixiFiber.js

Source: ReactPixiFiber.js

...148}149export function hideTextInstance(instance) {150  // Noop151}152export function unhideTextInstance(instance, props) {153  // Noop154}155export function detachDeletedInstance(instance) {156  // Noop157}158export function now() {159  return typeof performance === "object" &&160    typeof performance.now === "function"161    ? () => performance.now()162    : () => Date.now();163}164export const supportsMutation = true;165const hostConfig = {166  appendChild: appendChild,...

react-native-renderer.test.js

Source: react-native-renderer.test.js

...89  test("unhideInstance", () => {90    const result = FN.unhideInstance({});91  });92  test("unhideTextInstance", () => {93    const result = FN.unhideTextInstance({});94  });...

ReactFiberHostConfigWithNoMutation.js

Source: ReactFiberHostConfigWithNoMutation.js

1/**2 * Copyright (c) Facebook, Inc. and its affiliates.3 *4 * This source code is licensed under the MIT license found in the5 * LICENSE file in the root directory of this source tree.6 *7 *      8 */9import invariant from 'shared/invariant';10// Renderers that don't support mutation11// can re-export everything from this module.12function shim(...args     ) {13  invariant(14    false,15    'The current renderer does not support mutation. ' +16      'This error is likely caused by a bug in React. ' +17      'Please file an issue.',18  );19}20// Mutation (when unsupported)21export const supportsMutation = false;22export const appendChild = shim;23export const appendChildToContainer = shim;24export const commitTextUpdate = shim;25export const commitMount = shim;26export const commitUpdate = shim;27export const insertBefore = shim;28export const insertInContainerBefore = shim;29export const removeChild = shim;30export const removeChildFromContainer = shim;31export const resetTextContent = shim;32export const hideInstance = shim;33export const hideTextInstance = shim;34export const unhideInstance = shim;35export const unhideTextInstance = shim;...

HostConfigWithNoMutation.js

Source: HostConfigWithNoMutation.js

1/**2 * Copyright (c) Facebook, Inc. and its affiliates.3 *4 * This source code is licensed under the MIT license found in the5 * LICENSE file in the root directory of this source tree.6 *7 * @flow8 */9import invariant from 'shared/invariant';10// Renderers that don't support mutation11// can re-export everything from this module.12function shim(...args: any) {13  invariant(14    false,15    'The current renderer does not support mutation. ' +16      'This error is likely caused by a bug in React. ' +17      'Please file an issue.',18  );19}20// Mutation (when unsupported)21export const supportsMutation = false;22export const appendChild = shim;23export const appendChildToContainer = shim;24export const commitTextUpdate = shim;25export const commitMount = shim;26export const commitUpdate = shim;27export const insertBefore = shim;28export const insertInContainerBefore = shim;29export const removeChild = shim;30export const removeChildFromContainer = shim;31export const resetTextContent = shim;32export const hideInstance = shim;33export const hideTextInstance = shim;34export const unhideInstance = shim;...

Using AI Code Generation

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  await page.click('text=Get started');7  await page.waitForNavigation();8  await page.click('text=API');9  await page.waitForNavigation();10  await page.click('text=Internal API');11  await page.waitForNavigation();12  await page.click('text=unhideTextInstance');13  await page.waitForSelector('text=unhideTextInstance');14  await page.unhideTextInstance('text=unhideTextInstance');15  await page.screenshot({ path: 'example.png' });16  await browser.close();17})();

Using AI Code Generation

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  await page.type('input[title="Search"]', 'Playwright');7  await page.click('input[value="Google Search"]');8  await page.waitForSelector('text=Playwright: Node.js library to automate Chromium, Firefox and WebKit with a single API');9  await page.click('text=Playwright: Node.js library to automate Chromium, Firefox and WebKit with a single API');10  await page.waitForSelector('text=Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API. Playwright is built to enable cross-browser web automation that is ever-green, capable, reliable and fast.');11  await page.unhideTextInstance('text=Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API. Playwright is built to enable cross-browser web automation that is ever-green, capable, reliable and fast.');12  await page.screenshot({ path: `screenshot.png` });13  await browser.close();14})();

Using AI Code Generation

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  await page.evaluate(() => {7    const element = document.querySelector('input');8    window.playwright.internal.unhideTextInstance(element);9  });10  await page.screenshot({ path: 'example.png' });11  await browser.close();12})();

Using AI Code Generation

1const { unhideTextInstance } = require('playwright/lib/server/dom.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.click('text=Learn more');8  const textNode = await page.$('text=Learn more');9  await unhideTextInstance(textNode);10  await page.click('text=Learn more');11  await browser.close();12})();13const { unhideTextInstance } = require('playwright/lib/server/dom.js');14const { chromium } = require('playwright');15(async () => {16  const browser = await chromium.launch();17  const context = await browser.newContext();18  const page = await context.newPage();19  await page.click('text=Learn more');20  const textNode = await page.$('text=Learn more');21  await unhideTextInstance(textNode);22  await page.click('text=Learn more');23  await browser.close();24})();25const { unhideTextInstance } = require('playwright/lib/server/dom.js');26const { chromium } = require('playwright');27(async () => {28  const browser = await chromium.launch();29  const context = await browser.newContext();30  const page = await context.newPage();31  await page.click('text=Learn more');32  const textNode = await page.$('text=Learn more');33  await unhideTextInstance(textNode);34  await page.click('text=Learn more');35  await browser.close();36})();

Using AI Code Generation

1const {chromium} = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  await page.type('input[name="q"]', 'Playwright');6  await page.keyboard.press('Enter');7  await page.waitForSelector('.g');8  const elementHandle = await page.$('.g');9  const text = await page.evaluate(element => element.textContent, elementHandle);10  console.log(text);11  await browser.close();12})();13const {chromium} = require('playwright');14(async () => {15  const browser = await chromium.launch();16  const page = await browser.newPage();17  await page.type('input[name="q"]', 'Playwright');18  await page.keyboard.press('Enter');19  await page.waitForSelector('.g');20  const elementHandle = await page.$('.g');21  const text = await page.evaluate(element => element.textContent, elementHandle);22  console.log(text);23  await browser.close();24})();25const {chromium} = require('playwright');26(async () => {27  const browser = await chromium.launch();28  const page = await browser.newPage();29  await page.type('input[name="q"]', 'Playwright');30  await page.keyboard.press('Enter');31  await page.waitForSelector('.g');32  const elementHandle = await page.$('.g');33  const text = await page.evaluate(element => element.textContent, elementHandle);34  console.log(text);35  await browser.close();36})();37const {chromium} = require('playwright');38(async () => {39  const browser = await chromium.launch();40  const page = await browser.newPage();41  await page.type('input[name="q"]', 'Playwright');42  await page.keyboard.press('Enter');43  await page.waitForSelector('.g');44  const elementHandle = await page.$('.g');45  const text = await page.evaluate(element => element.textContent, element

Using AI Code Generation

1const {chromium} = require('playwright');2(async () => {3  const context = await chromium.launch();4  const page = await context.newPage();5  const element = await page.$('input');6  await page.evaluate(element => element.unhideTextInstance(), element);7  await page.fill('input', 'Hello World');8  await page.screenshot({ path: 'example.png' });9  await context.close();10})();

Using AI Code Generation

1import { unhideTextInstance } from "playwright/lib/client/selectorEngine";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 [response] = await Promise.all([8    page.waitForNavigation(),9    page.click("text=Today's Deals"),10  ]);11  await unhideTextInstance(page, "text=Best Sellers");12  await page.click("text=Best Sellers");13  await page.screenshot({ path: "example.png" });14  await browser.close();15})();16I have a query, how to use unhideTextInstance method of Playwright Internal API in a .ts file. I am not able to find a way to import the method in the .ts file. Can you please help me out?17Thanks for the reply. I have a follow up question. I am not able to use the unhideTextInstance method in the .ts file. I am getting the following error: “Cannot find name ‘unhideTextInstance’.ts(2304)”. Can you please help me out?

StackOverFlow community discussions

Questions

Discussion

Jest + Playwright - Test callbacks of event-based DOM library

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

Running Playwright in Azure Function

firefox browser does not start in playwright

Is it possible to get the selector from a locator object in playwright?

firefox browser does not start in playwright

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

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

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

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

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