How to use parseSerializedValue method in Playwright Internal

Best JavaScript code snippet using playwright-internal

serializers.js

Source:serializers.js

...38}39function parseError(error) {40  if (!error.error) {41    if (error.value === undefined) throw new Error('Serialized error must have either an error or a value');42    return parseSerializedValue(error.value, undefined);43  }44  if (error.error.name === 'TimeoutError') {45    const e = new _errors.TimeoutError(error.error.message);46    e.stack = error.error.stack || '';47    return e;48  }49  const e = new Error(error.error.message);50  e.stack = error.error.stack || '';51  e.name = error.error.name;52  return e;53}54function parseSerializedValue(value, handles) {55  if (value.n !== undefined) return value.n;56  if (value.s !== undefined) return value.s;57  if (value.b !== undefined) return value.b;58  if (value.v !== undefined) {59    if (value.v === 'undefined') return undefined;60    if (value.v === 'null') return null;61    if (value.v === 'NaN') return NaN;62    if (value.v === 'Infinity') return Infinity;63    if (value.v === '-Infinity') return -Infinity;64    if (value.v === '-0') return -0;65  }66  if (value.d !== undefined) return new Date(value.d);67  if (value.r !== undefined) return new RegExp(value.r.p, value.r.f);68  if (value.a !== undefined) return value.a.map(a => parseSerializedValue(a, handles));69  if (value.o !== undefined) {70    const result = {};71    for (const {72      k,73      v74    } of value.o) result[k] = parseSerializedValue(v, handles);75    return result;76  }77  if (value.h !== undefined) {78    if (handles === undefined) throw new Error('Unexpected handle');79    return handles[value.h];80  }81  throw new Error('Unexpected value');82}83function serializeValue(value, handleSerializer, visited) {84  const handle = handleSerializer(value);85  if ('fallThrough' in handle) value = handle.fallThrough;else return handle;86  if (visited.has(value)) throw new Error('Argument is a circular structure');87  if (typeof value === 'symbol') return {88    v: 'undefined'...

jsHandleDispatcher.js

Source:jsHandleDispatcher.js

1"use strict";2Object.defineProperty(exports, "__esModule", {3  value: true4});5exports.JSHandleDispatcher = void 0;6exports.parseArgument = parseArgument;7exports.parseValue = parseValue;8exports.serializeResult = serializeResult;9var _dispatcher = require("./dispatcher");10var _elementHandlerDispatcher = require("./elementHandlerDispatcher");11var _serializers = require("../protocol/serializers");12/**13 * Copyright (c) Microsoft Corporation.14 *15 * Licensed under the Apache License, Version 2.0 (the "License");16 * you may not use this file except in compliance with the License.17 * You may obtain a copy of the License at18 *19 * http://www.apache.org/licenses/LICENSE-2.020 *21 * Unless required by applicable law or agreed to in writing, software22 * distributed under the License is distributed on an "AS IS" BASIS,23 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.24 * See the License for the specific language governing permissions and25 * limitations under the License.26 */27class JSHandleDispatcher extends _dispatcher.Dispatcher {28  constructor(scope, jsHandle) {29    // Do not call this directly, use createHandle() instead.30    super(scope, jsHandle, jsHandle.asElement() ? 'ElementHandle' : 'JSHandle', {31      preview: jsHandle.toString()32    });33    this._type_JSHandle = true;34    jsHandle._setPreviewCallback(preview => this._dispatchEvent('previewUpdated', {35      preview36    }));37  }38  async evaluateExpression(params) {39    return {40      value: serializeResult(await this._object.evaluateExpressionAndWaitForSignals(params.expression, params.isFunction, true41      /* returnByValue */42      , parseArgument(params.arg)))43    };44  }45  async evaluateExpressionHandle(params) {46    const jsHandle = await this._object.evaluateExpressionAndWaitForSignals(params.expression, params.isFunction, false47    /* returnByValue */48    , parseArgument(params.arg));49    return {50      handle: _elementHandlerDispatcher.ElementHandleDispatcher.fromJSHandle(this._scope, jsHandle)51    };52  }53  async getProperty(params) {54    const jsHandle = await this._object.getProperty(params.name);55    return {56      handle: _elementHandlerDispatcher.ElementHandleDispatcher.fromJSHandle(this._scope, jsHandle)57    };58  }59  async getPropertyList() {60    const map = await this._object.getProperties();61    const properties = [];62    for (const [name, value] of map) properties.push({63      name,64      value: _elementHandlerDispatcher.ElementHandleDispatcher.fromJSHandle(this._scope, value)65    });66    return {67      properties68    };69  }70  async jsonValue() {71    return {72      value: serializeResult(await this._object.jsonValue())73    };74  }75  async dispose() {76    await this._object.dispose();77  }78} // Generic channel parser converts guids to JSHandleDispatchers,79// and this function takes care of coverting them into underlying JSHandles.80exports.JSHandleDispatcher = JSHandleDispatcher;81function parseArgument(arg) {82  return (0, _serializers.parseSerializedValue)(arg.value, arg.handles.map(a => a._object));83}84function parseValue(v) {85  return (0, _serializers.parseSerializedValue)(v, []);86}87function serializeResult(arg) {88  return (0, _serializers.serializeValue)(arg, value => ({89    fallThrough: value90  }), new Set());...

Using AI Code Generation

1const { parseSerializedValue } = require('playwright/lib/client/serializers');2const value = await page.evaluate(() => {3    return {4        c: {5        }6    };7});8const parsedValue = parseSerializedValue(value);9console.log(parsedValue);10const { parseSerializedValue } = require('playwright/lib/client/serializers');11const value = await page.evaluate(() => {12    return new Set([1, 2, 3]);13});14const parsedValue = parseSerializedValue(value);15console.log(parsedValue);16const { parseSerializedValue } = require('playwright/lib/client/serializers');17const value = await page.evaluate(() => {18    return new Map([['a', 1], ['b', 2], ['c', 3]]);19});20const parsedValue = parseSerializedValue(value);21console.log(parsedValue);22const { parseSerializedValue } = require('playwright/lib/client/serializers');23const value = await page.evaluate(() => {24    return new Date('2020-01-01');25});26const parsedValue = parseSerializedValue(value);27console.log(parsedValue);28const { parseSerializedValue } = require('playwright/lib/client/serializers');29const value = await page.evaluate(() => {30    return new Error('This is an error');31});32const parsedValue = parseSerializedValue(value);33console.log(parsedValue);

Using AI Code Generation

1const { parseSerializedValue } = require('playwright/lib/client/serializers');2const result = parseSerializedValue('{"type":"object","value":{"foo":"bar"}}');3console.log(result);4const { parseSerializedValue } = require('playwright/lib/client/serializers');5const result = parseSerializedValue('{"type":"object","value":{"foo":{"type":"object","value":{"bar":"baz"}}}}');6console.log(result);7const { parseSerializedValue } = require('playwright/lib/client/serializers');8const result = parseSerializedValue('{"type":"object","value":{"foo":{"type":"object","value":{"bar":{"type":"object","value":{"baz":"qux"}}}}}}');9console.log(result);10const { parseSerializedValue } = require('playwright/lib/client/serializers');11const result = parseSerializedValue('{"type":"object","value":{"foo":{"type":"object","value":{"bar":{"type":"object","value":{"baz":{"type":"object","value":{"qux":"quux"}}}}}}}}');12console.log(result);13const { parseSerializedValue } = require('playwright/lib/client/serializers');14const result = parseSerializedValue('{"type":"object","value":{"foo":{"type":"object","value":{"bar":{"type":"object","value":{"baz":{"type":"object","value":{"qux":{"type":"object","value":{"quux":"corge"}}}}}}}}}}');15console.log(result);16const { parseSerializedValue

Using AI Code Generation

1const { parseSerializedValue } = require('playwright/lib/server/frames');2const { serializeValue } = require('playwright/lib/server/serializers');3const { parse } = require('playwright/lib/server/protocol');4const { parseCallArgument } = require('playwright/lib/server/callMetadata');5const { parseEvaluationResult } = require('playwright/lib/server/page');6const { parseValueResult } = require('playwright/lib/server/elementHandleDispatcher');7const { Page } = require('playwright/lib/server/page');8const { ElementHandle } = require('playwright/lib/server/elementHandler');9const { JSHandle } = require('playwright/lib/server/jsHandle');10const { JSHandleDispatcher } = require('playwright/lib/server/jsHandleDispatcher');11const { ElementHandleDispatcher } = require('playwright/lib/server/elementHandleDispatcher');12const { Frame } = require('playwright/lib/server/frame');13const { FrameDispatcher } = require('playwright/lib/server/frameDispatcher');14const { helper } = require('playwright/lib/server/helper');15const { assert } = require('playwright/lib/server/helper');16const { CDPSession } = require('playwright/lib/server/cdpSession');17const { CDPSessionDispatcher } = require('playwright/lib/server/cdpSessionDispatcher');18const { Connection } = require('playwright/lib/server/connection');19const { ConnectionDispatcher } = require('playwright/lib/server/connectionDispatcher');20const { BrowserContext } = require('playwright/lib/server/browserContext');21const { BrowserContextDispatcher } = require('playwright/lib/server/browserContextDispatcher');22const { Browser } = require('playwright/lib/server/browser');23const { BrowserDispatcher } = require('playwright/lib/server/browserDispatcher');24const { Playwright } = require('playwright/lib/server/playwright');25const { PlaywrightDispatcher } = require('playwright/lib/server/playwrightDispatcher');26const { DispatcherConnection } = require('playwright/lib/client/dispatcher');27const { parseSerializedValue } = require('playwright/lib/server/frames');28const { serializeValue } = require('playwright/lib/server/serializers');29const { parse } = require('playwright/lib/server/protocol');30const { parseCallArgument } = require('playwright/lib/server/callMetadata');31const { parseEvaluationResult } = require('playwright/lib/server/page');32const { parseValue

Using AI Code Generation

1const { parseSerializedValue } = require('playwright/lib/client/protocol/serializers');2const value = parseSerializedValue('{"foo":"bar"}');3console.log(value);4const { parseSerializedValue } = require('playwright/lib/server/protocol/serializers');5const value = parseSerializedValue('{"foo":"bar"}');6console.log(value);7{ foo: 'bar' }

Using AI Code Generation

1const { parseSerializedValue } = require('playwright/lib/server/frames');2const value = parseSerializedValue({ type: 'string', value: 'Hello World' });3console.log(value);4const value = 'Hello World';5console.log(typeof value);6const { parseSerializedValue } = require('playwright/lib/server/frames');7const value = parseSerializedValue({ type: 'string', value: 'Hello World' });8console.log(value);9const value = 'Hello World';10console.log(typeof value);11const { parseSerializedValue } = require('playwright/lib/server/frames');12const value = parseSerializedValue({ type: 'string', value: 'Hello World' });13console.log(value);

Using AI Code Generation

1const { parseSerializedValue } = require('@playwright/test/lib/utils/serializedValue');2const serializedValue = {3  preview: {4      {5      },6      {7      },8  },9};10console.log(parseSerializedValue(serializedValue));11{ a: 1, b: 'b' }

Using AI Code Generation

1const { parseSerializedValue } = require('playwright/lib/server/common/serializers');2const value = 'Hello World';3const { value: parsedValue } = parseSerializedValue(value);4console.log(parsedValue);5const { parseSerializedValue } = require('playwright/lib/server/common/serializers');6const value = 'Hello World';7const { value: parsedValue } = parseSerializedValue(value);8console.log(parsedValue);9const playwright = require('playwright');10(async () => {11  for (const browserType of ['chromium', 'firefox', 'webkit']) {12    const browser = await playwright[browserType].launch();13    const context = await browser.newContext();14    const page = await context.newPage();15    await page.screenshot({ path: `example-${browserType}.png` });16    await browser.close();17  }18})();19const playwright = require('playwright');20(async () => {21  for (const browserType of

Using AI Code Generation

1const { parseSerializedValue } = require('playwright/lib/client/serializers');2const value = parseSerializedValue({ type: 'string', value: 'Hello World' });3console.log(value);4const { parseSerializedValue } = require('playwright/lib/client/serializers');5const value = parseSerializedValue({ type: 'string', value: 'Hello World' });6console.log(value);7const { parseSerializedValue } = require('playwright/lib/client/serializers');8const value = parseSerializedValue({ type: 'string', value: 'Hello World' });9console.log(value);10const { parseSerializedValue } = require('playwright/lib/client/serializers');11const value = parseSerializedValue({ type: 'string', value: 'Hello World' });12console.log(value);13const { parseSerializedValue } = require('playwright/lib/client/serializers');14const value = parseSerializedValue({ type: 'string', value: 'Hello World' });15console.log(value);

Using AI Code Generation

1const { parseSerializedValue } = require('playwright/lib/server/frames');2const { parse } = require('playwright/lib/utils/parseUtils');3const value = parseSerializedValue(parse(`{ "foo": "bar" }`));4console.log(value);5const { parseSerializedValue } = require('playwright/lib/server/frames');6const { parse } = require('playwright/lib/utils/parseUtils');7const value = parseSerializedValue(parse(`{ "foo": "bar" }`));8console.log(value);

Using AI Code Generation

1const { parseSerializedValue } = require('playwright/lib/protocol/serializers');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 value = await page.evaluate(() => {8    const obj = { a: 1, b: 'test' };9    const objString = JSON.stringify(obj);10    return objString;11  });12  console.log(value);13  const parsedValue = parseSerializedValue(value);14  console.log(parsedValue);15  await browser.close();16})();17{"a":1,"b":"test"}18{ a: 1, b: 'test' }19parseSerializedValue(value)20JSON.stringify() method21JSON.parse() method

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.