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How to use injectToKeepAliveRoot method in Playwright Internal

Best JavaScript code snippet using playwright-internal

runtime-core.esm-bundler-3a8001f8.js

Source: runtime-core.esm-bundler-3a8001f8.js

...423    if (target) {424        let current = target.parent;425        while (current && current.parent) {426            if (isKeepAlive(current.parent.vnode)) {427                injectToKeepAliveRoot(wrappedHook, type, target, current);428            }429            current = current.parent;430        }431    }432}433function injectToKeepAliveRoot(hook, type, target, keepAliveRoot) {434    // injectHook wraps the original for error handling, so make sure to remove435    // the wrapped version.436    const injected = injectHook(type, hook, keepAliveRoot, true /* prepend */);437    onUnmounted(() => {438        remove(keepAliveRoot[type], injected);439    }, target);440}441function injectHook(type, hook, target = currentInstance, prepend = false) {442    if (target) {443        const hooks = target[type] || (target[type] = []);444        // cache the error handling wrapper for injected hooks so the same hook445        // can be properly deduped by the scheduler. "__weh" stands for "with error446        // handling".447        const wrappedHook = hook.__weh ||...

vendor.js

Source: vendor.js

...1862  if (target) {1863    let current = target.parent;1864    while (current && current.parent) {1865      if (isKeepAlive(current.parent.vnode)) {1866        injectToKeepAliveRoot(wrappedHook, type, target, current);1867      }1868      current = current.parent;1869    }1870  }1871}1872function injectToKeepAliveRoot(hook, type, target, keepAliveRoot) {1873  const injected = injectHook(type, hook, keepAliveRoot, true);1874  onUnmounted(() => {1875    remove(keepAliveRoot[type], injected);1876  }, target);1877}1878function injectHook(type, hook, target = currentInstance, prepend = false) {1879  if (target) {1880    const hooks = target[type] || (target[type] = []);1881    const wrappedHook = hook.__weh || (hook.__weh = (...args) => {1882      if (target.isUnmounted) {1883        return;1884      }1885      pauseTracking();1886      setCurrentInstance(target);...

vendor.0cf0f85f.js

Source: vendor.0cf0f85f.js

...1757  if (target) {1758    let current = target.parent;1759    while (current && current.parent) {1760      if (isKeepAlive(current.parent.vnode)) {1761        injectToKeepAliveRoot(wrappedHook, type, target, current);1762      }1763      current = current.parent;1764    }1765  }1766}1767function injectToKeepAliveRoot(hook, type, target, keepAliveRoot) {1768  const injected = injectHook(type, hook, keepAliveRoot, true);1769  onUnmounted(() => {1770    remove(keepAliveRoot[type], injected);1771  }, target);1772}1773function injectHook(type, hook, target = currentInstance, prepend = false) {1774  if (target) {1775    const hooks = target[type] || (target[type] = []);1776    const wrappedHook = hook.__weh || (hook.__weh = (...args) => {1777      if (target.isUnmounted) {1778        return;1779      }1780      pauseTracking();1781      setCurrentInstance(target);...

vue.runtime.esm.js

Source: vue.runtime.esm.js

...1725    if (target) {1726        let current = target.parent;1727        while (current && current.parent) {1728            if (isKeepAlive(current.parent.vnode)) {1729                injectToKeepAliveRoot(wrappedHook, type, target, current);1730            }1731            current = current.parent;1732        }1733    }1734}1735function injectToKeepAliveRoot(hook, type, target, keepAliveRoot) {1736    // injectHook wraps the original for error handling, so make sure to remove1737    // the wrapped version.1738    const injected = injectHook(type, hook, keepAliveRoot, true /* prepend */);1739    onUnmounted(() => {1740        remove(keepAliveRoot[type], injected);1741    }, target);1742}1743/**1744Runtime helper for applying directives to a vnode. Example usage:1745const comp = resolveComponent('comp')1746const foo = resolveDirective('foo')1747const bar = resolveDirective('bar')1748return withDirectives(h(comp), [1749  [foo, this.x],
...

jquery-3.6.0.min.js

Source: jquery-3.6.0.min.js

...784    e()785  });786  if (injectHook(t, r, n), n) {787    let e = n.parent;788    for (; e && e.parent;) isKeepAlive(e.parent.vnode) && injectToKeepAliveRoot(r, t, n, e), e = e.parent789  }790}791function injectToKeepAliveRoot(e, t, n, r) {792  const o = injectHook(t, e, r, !0);793  Ce((() => {794    remove(r[t], o)795  }), n)796}797function injectHook(e, t, n = Ye, r = !1) {798  if (n) {799    const o = n[e] || (n[e] = []), s = t.__weh || (t.__weh = (...r) => {800      if (n.isUnmounted) return;801      pauseTracking(), setCurrentInstance(n);802      const o = callWithAsyncErrorHandling(t, n, e, r);803      return setCurrentInstance(null), resetTracking(), o804    });805    return r ? o.unshift(s) : o.push(s), s...

index.147aad71.js

Source: index.147aad71.js

...1704  if (target) {1705    let current = target.parent;1706    while (current && current.parent) {1707      if (isKeepAlive(current.parent.vnode)) {1708        injectToKeepAliveRoot(wrappedHook, type, target, current);1709      }1710      current = current.parent;1711    }1712  }1713}1714function injectToKeepAliveRoot(hook, type, target, keepAliveRoot) {1715  const injected = injectHook(type, hook, keepAliveRoot, true);1716  onUnmounted(() => {1717    remove(keepAliveRoot[type], injected);1718  }, target);1719}1720const isInternalKey = (key) => key[0] === "_" || key === "$stable";1721const normalizeSlotValue = (value) => isArray(value) ? value.map(normalizeVNode) : [normalizeVNode(value)];1722const normalizeSlot = (key, rawSlot, ctx) => withCtx((props) => {1723  return normalizeSlotValue(rawSlot(props));1724}, ctx);1725const normalizeObjectSlots = (rawSlots, slots) => {1726  const ctx = rawSlots._ctx;1727  for (const key in rawSlots) {1728    if (isInternalKey(key))...

runtime-core.cjs.prod.js

Source: runtime-core.cjs.prod.js

...2346    if (target) {2347        let current = target.parent;2348        while (current && current.parent) {2349            if (current.parent.type === KeepAliveImpl) {2350                injectToKeepAliveRoot(wrappedHook, type, target, current);2351            }2352            current = current.parent;2353        }2354    }2355}2356function injectToKeepAliveRoot(hook, type, target, keepAliveRoot) {2357    injectHook(type, hook, keepAliveRoot, true /* prepend */);2358    onUnmounted(() => {2359        const hooks = keepAliveRoot[type];2360        hooks.splice(hooks.indexOf(hook), 1);2361    }, target);2362}2363function injectHook(type, hook, target = currentInstance, prepend = false) {2364    if (target) {2365        const hooks = target[type] || (target[type] = []);2366        // cache the error handling wrapper for injected hooks so the same hook2367        // can be properly deduped by the scheduler. "__weh" stands for "with error2368        // handling".2369        const wrappedHook = hook.__weh ||2370            (hook.__weh = (...args) => {...

KeepAlive.js

Source: KeepAlive.js

...213  if (target) {214    let current = target.parent215    while (current && current.parent) {216      if (isKeepAlive(current.parent.vnode)) {217        injectToKeepAliveRoot(wrappedHook, type, target, current)218      }219      current = current.parent220    }221  }222}223function injectToKeepAliveRoot (hook, type, target, keepAliveRoot) {224  const injected = injectHook(type, hook, keepAliveRoot, true)225  onUnmounted(() => {226    remove(keepAliveRoot[type], injected)227  }, target)228}229function resetShapeFlag (vnode) {230  let shapeFlag = vnode.shapeFlag231  if (shapeFlag & 256) {...

Using AI Code Generation

1const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const root = document.querySelector('html');7  injectToKeepAliveRoot(root);8  const page = await context.newPage();9  await page.screenshot({ path: 'example.png' });10  await browser.close();11})();12const { chromium } = require('playwright');13(async () => {14  const browser = await chromium.launch();15  const context = await browser.newContext();16  const root = document.querySelector('html');17  injectToKeepAliveRoot(root);18  const page = await context.newPage();19  await page.screenshot({ path: 'example.png' });20  await browser.close();21})();22    at CDPSession.send (/home/user/node_modules/playwright/lib/cjs/server/cjs/chromium/crConnection.js:105:19)23    at async BrowserContext._createTarget (/home/user/node_modules/playwright/lib/cjs/server/cjs/chromium/crBrowser.js:88:5)24    at async BrowserContext.newPage (/home/user/node_modules/playwright/lib/cjs/server/cjs/browserContext.js:379:5)25    at async Object.<anonymous> (/home/user/test2.js:19:18)

Using AI Code Generation

1const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');2injectToKeepAliveRoot();3const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');4injectToKeepAliveRoot();5const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');6injectToKeepAliveRoot();7const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');8injectToKeepAliveRoot();9const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');10injectToKeepAliveRoot();11const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');12injectToKeepAliveRoot();13const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');14injectToKeepAliveRoot();15const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');16injectToKeepAliveRoot();17const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');18injectToKeepAliveRoot();19const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');20injectToKeepAliveRoot();21const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');22injectToKeepAliveRoot();23const { injectToKeepAliveRoot } = require('playwright/lib/server/injected/injectedScript');

Using AI Code Generation

1const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");2const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");3const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");4const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");5const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");6const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");7const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");8const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");9const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");10const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");11const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");12const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");13const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");14const { injectToKeepAliveRoot } = require("playwright/lib/utils/injectedScript.js");

Using AI Code Generation

1const {injectToKeepAliveRoot} = require('playwright/lib/server/browserType');2const {chromium} = require('playwright');3const browser = await chromium.launch();4const page = await browser.newPage();5await injectToKeepAliveRoot(page);6await page.close();7await browser.close();

Using AI Code Generation

1import { injectToKeepAliveRoot } from "playwright/lib/server/injected/injectToKeepAliveRoot";2const { injectToKeepAliveRoot } = require("playwright/lib/server/injected/injectToKeepAliveRoot");3const { injectToKeepAliveRoot } = require("playwright/lib/server/injected/injectToKeepAliveRoot");4import { injectToKeepAliveRoot } from "playwright/lib/server/injected/injectToKeepAliveRoot";5const { injectToKeepAliveRoot } = require("playwright/lib/server/injected/injectToKeepAliveRoot");6import { injectToKeepAliveRoot } from "playwright/lib/server/injected/injectToKeepAliveRoot";7const { injectToKeepAliveRoot } = require("playwright/lib/server/injected/injectToKeepAliveRoot");8import { injectToKeepAliveRoot } from "playwright/lib/server/injected/injectToKeepAliveRoot";9const { injectToKeepAliveRoot } = require("playwright/lib/server/injected/injectToKeepAliveRoot");10import { injectToKeepAliveRoot } from "playwright/lib/server/injected/injectToKeepAliveRoot";11const { injectToKeepAliveRoot } = require("playwright/lib/server/injected/injectToKeepAliveRoot");12import { injectToKeepAliveRoot } from "playwright/lib/server/injected/inject

Using AI Code Generation

1const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');2const { chromium, webkit, firefox } = require('playwright');3(async () => {4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.screenshot({ path: `example.png` });7  await browser.close();8})();9const { createServer } = require('http');10const server = createServer((req, res) => {11  res.end('Hello World');12});13server.listen(8080);

Using AI Code Generation

1const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');2const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');3const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');4console.log(keepAliveRoot, keepAliveRoot2);5const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');6const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');7const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');8console.log(keepAliveRoot, keepAliveRoot2);9const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');10const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');11const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');12console.log(keepAliveRoot, keepAliveRoot2);13const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');14const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');15const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');16console.log(keepAliveRoot, keepAliveRoot2);17const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');18const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');19const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');20console.log(keepAliveRoot, keepAliveRoot2);21const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');22const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');23const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');24console.log(keepAliveRoot, keepAliveRoot2);

Using AI Code Generation

1const { injectToKeepAliveRoot } = require('playwright/lib/server/injectedScript');2const { context } = require('playwright/lib/server/chromium/crBrowser');3const { getRoots } = require('playwright/lib/server/injectedScript');4const roots = getRoots();5injectToKeepAliveRoot(roots[0], context);6const { injectToKeepAliveRoot } = require('playwright/lib/server/injectedScript');7const { context } = require('playwright/lib/server/chromium/crBrowser');8const { getRoots } = require('playwright/lib/server/injectedScript');9const roots = getRoots();10injectToKeepAliveRoot(roots[0], context);11const { injectToKeepAliveRoot } = require('playwright/lib/server/injectedScript');12const { context } = require('playwright/lib/server/chromium/crBrowser');13const { getRoots } = require('playwright/lib/server/injectedScript');14const roots = getRoots();15injectToKeepAliveRoot(roots[0], context);16const { injectToKeepAliveRoot } = require('playwright/lib/server/injectedScript');17const { context } = require('playwright/lib/server/chromium/crBrowser');18const { getRoots } = require('playwright/lib/server/injectedScript');19const roots = getRoots();20injectToKeepAliveRoot(roots[0], context);21const { injectToKeepAliveRoot } = require('playwright/lib/server/injectedScript');22const { context } = require('playwright/lib/server/chromium/crBrowser');23const { getRoots } = require('playwright/lib/server/injectedScript');24const roots = getRoots();25injectToKeepAliveRoot(roots[0], context);26const { injectToKeepAliveRoot } = require('playwright/lib/server/injectedScript');27const { context } = require('playwright/lib/server/chromium/crBrowser');28const { getRoots } = require('playwright/lib/server/injectedScript');

Using AI Code Generation

1const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');2const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');3const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');4console.log(keepAliveRoot, keepAliveRoot2);5const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');6const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');7const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');8console.log(keepAliveRoot, keepAliveRoot2);9const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');10const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');11const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');12console.log(keepAliveRoot, keepAliveRoot2);13const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');14const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');15const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');16console.log(keepAliveRoot, keepAliveRoot2);17const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');18const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');19const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');20console.log(keepAliveRoot, keepAliveRoot2);21const { injectToKeepAliveRoot } = require('playwright/lib/server/browserContext');22const keepAliveRoot = injectToKeepAliveRoot('keepAliveRoot');23const keepAliveRoot2 = injectToKeepAliveRoot('keepAliveRoot2');24console.log(keepAliveRoot, keepAliveRoot2);

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?

firefox browser does not start in playwright

Running Playwright in Azure Function

Is it possible to get the selector from a locator object 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

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

Blogs

Check out the latest blogs from LambdaTest on this topic:

An Interactive Guide To CSS Hover Effects

Building a website is all about keeping the user experience in mind. Ultimately, it’s about providing visitors with a mind-blowing experience so they’ll keep coming back. One way to ensure visitors have a great time on your site is to add some eye-catching text or image animations.

Dec’22 Updates: The All-New LT Browser 2.0, XCUI App Automation with HyperExecute, And More!

Greetings folks! With the new year finally upon us, we’re excited to announce a collection of brand-new product updates. At LambdaTest, we strive to provide you with a comprehensive test orchestration and execution platform to ensure the ultimate web and mobile experience.

Pair testing strategy in an Agile environment

Pair testing can help you complete your testing tasks faster and with higher quality. But who can do pair testing, and when should it be done? And what form of pair testing is best for your circumstance? Check out this blog for more information on how to conduct pair testing to optimize its benefits.

Getting Rid of Technical Debt in Agile Projects

Technical debt was originally defined as code restructuring, but in today’s fast-paced software delivery environment, it has evolved. Technical debt may be anything that the software development team puts off for later, such as ineffective code, unfixed defects, lacking unit tests, excessive manual tests, or missing automated tests. And, like financial debt, it is challenging to pay back.

Top 22 Selenium Automation Testing Blogs To Look Out In 2020

If you are a web tester then somewhere down the road you will have to come across Selenium, an open-source test automation framework that has been on boom ever since its launch in 2004.

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
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.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.