Best JavaScript code snippet using playwright-internal
ReactPropTypes.js
Source:ReactPropTypes.js  
...13  object: createPrimitiveTypeChecker('object'),14  string: createPrimitiveTypeChecker('string'),15  any: createAnyTypeChecker(),16  arrayOf: createArrayOfTypeChecker,17  element: createElementTypeChecker(),18  instanceOf: createInstanceTypeChecker,19  node: createNodeChecker(),20  objectOf: createObjectOfTypeChecker,21  oneOf: createEnumTypeChecker,22  oneOfType: createUnionTypeChecker,23  shape: createShapeTypeChecker24};25function createChainableTypeChecker(validate) {26  function checkType(isRequired, props, propName, componentName, location, propFullName) {27    componentName = componentName || ANONYMOUS;28    propFullName = propFullName || propName;29    if (props[propName] == null) {30      var locationName = ReactPropTypeLocationNames[location];31      if (isRequired) {32        return new Error('Required ' + locationName + ' `' + propFullName + '` was not specified in ' + ('`' + componentName + '`.'));33      }34      return null;35    } else {36      return validate(props, propName, componentName, location, propFullName);37    }38  }39  var chainedCheckType = checkType.bind(null, false);40  chainedCheckType.isRequired = checkType.bind(null, true);41  return chainedCheckType;42}43function createPrimitiveTypeChecker(expectedType) {44  function validate(props, propName, componentName, location, propFullName) {45    var propValue = props[propName];46    var propType = getPropType(propValue);47    if (propType !== expectedType) {48      var locationName = ReactPropTypeLocationNames[location];49      var preciseType = getPreciseType(propValue);50      return new Error('Invalid ' + locationName + ' `' + propFullName + '` of type ' + ('`' + preciseType + '` supplied to `' + componentName + '`, expected ') + ('`' + expectedType + '`.'));51    }52    return null;53  }54  return createChainableTypeChecker(validate);55}56function createAnyTypeChecker() {57  return createChainableTypeChecker(emptyFunction.thatReturns(null));58}59function createArrayOfTypeChecker(typeChecker) {60  function validate(props, propName, componentName, location, propFullName) {61    var propValue = props[propName];62    if (!Array.isArray(propValue)) {63      var locationName = ReactPropTypeLocationNames[location];64      var propType = getPropType(propValue);65      return new Error('Invalid ' + locationName + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected an array.'));66    }67    for (var i = 0; i < propValue.length; i++) {68      var error = typeChecker(propValue, i, componentName, location, propFullName + '[' + i + ']');69      if (error instanceof Error) {70        return error;71      }72    }73    return null;74  }75  return createChainableTypeChecker(validate);76}77function createElementTypeChecker() {78  function validate(props, propName, componentName, location, propFullName) {79    if (!ReactElement.isValidElement(props[propName])) {80      var locationName = ReactPropTypeLocationNames[location];81      return new Error('Invalid ' + locationName + ' `' + propFullName + '` supplied to ' + ('`' + componentName + '`, expected a single ReactElement.'));82    }83    return null;84  }85  return createChainableTypeChecker(validate);86}87function createInstanceTypeChecker(expectedClass) {88  function validate(props, propName, componentName, location, propFullName) {89    if (!(props[propName] instanceof expectedClass)) {90      var locationName = ReactPropTypeLocationNames[location];91      var expectedClassName = expectedClass.name || ANONYMOUS;...propValidation.js
Source:propValidation.js  
...10  string: createPrimitiveTypeChecker('string'),11  symbol: createPrimitiveTypeChecker('symbol'),12  any: createAnyTypeChecker(),13  arrayOf: createArrayOfTypeChecker,14  element: createElementTypeChecker(),15  instanceOf: createInstanceTypeChecker,16  objectOf: createObjectOfTypeChecker,17  oneOf: createEnumTypeChecker,18  oneOfType: createUnionTypeChecker,19  shape: createShapeTypeChecker,20};21// node: createNodeChecker(),22/*23* Primitive checker24*/25function createChainableTypeChecker(validate) {26  function checkType(isOptional, value) {27    if (value == null) {28      if (isOptional) {29        if (value === null) {30          return new Error(31            `The ${value} is marked as required, but its value is \`null\`.`32          );33        }34        return new Error(35          `The ${value} is marked as required, but its value is \`undefined\`.`36        );37      }38      return null;39    } else {40      return validate(value);41    }42  }43  const chainedCheckType = checkType.bind(null, false);44  chainedCheckType.isOptional = checkType.bind(null, true);45  return chainedCheckType;46}47function createPrimitiveTypeChecker(expectedType) {48  function validate(value) {49    const propType = getPropType(value);50    if (propType !== expectedType) {51      var preciseType = getPreciseType(value);52      return new Error(53        `Invalid type!`54      );55    }56    return null;57  }58  return createChainableTypeChecker(validate);59}60const getPropType = propValue => {61  var propType = typeof propValue62  if (Array.isArray(propValue)) {63    return 'array'64  } else if (propValue instanceof RegExp) {65    return 'object'66  } else if (isSymbol(propType, propValue)) {67    return 'symbol'68  }69  return propType70};71const getPreciseType = propValue => {72  var propType = getPropType(propValue)73  if (propType === 'object') {74    if (propValue instanceof Date) {75      return 'date'76    } else if (propValue instanceof RegExp) {77      return 'regexp'78    }79  }80  return propType81};82const isSymbol = (propType, propValue) => {83  if (propType === 'symbol' || 84    propValue['@@toStringTag'] === 'Symbol' || 85    typeof Symbol === 'function' && propValue instanceof Symbol86  ) {87    return true88  }89  return false90};91const getClassName = propValue =>92  !propValue.constructor || !propValue.constructor.name 93    ? ANONYMOUS94    : propValue.constructor.name95/*96* Other checkers97*/98function createAnyTypeChecker() {99  return createChainableTypeChecker(emptyFunction);100}101/*eslint-disable no-self-compare*/102function is(x, y) {103  // SameValue algorithm104  if (x === y) { // Steps 1-5, 7-10105    // Steps 6.b-6.e: +0 != -0106    return x !== 0 || 1 / x === 1 / y;107  } else {108    // Step 6.a: NaN == NaN109    return x !== x && y !== y;110  }111}112/*eslint-enable no-self-compare*/113function createArrayOfTypeChecker(typeChecker) {114  function validate(value) {115    if (typeof typeChecker !== 'function') {116      return new Error(117        `Property of component has invalid PropType notation inside arrayOf.`118      );119    }120    if (!Array.isArray(value)) {121      var propType = getPropType(value);122      return new Error(123        `Invalid of type supplied to , expected an array.`124      );125    }126    for (var i = 0; i < value.length; i++) {127      var error = typeChecker(value[i]);128      if (error instanceof Error) {129        return error;130      }131    }132    return null;133  }134  return createChainableTypeChecker(validate);135}136function createElementTypeChecker() {137  function validate(value) {138    if (!React.isValidElement(value)) {139      var propType = getPropType(value);140      return new Error(141        `Invalid of type supplied to, expected a single React.`142      );143    }144    return null;145  }146  return createChainableTypeChecker(validate);147}148function createInstanceTypeChecker(expectedClass) {149  function validate(value) {150    if (value instanceof expectedClass) {...CustomPropTypes.js
Source:CustomPropTypes.js  
...36   * @param propName37   * @param componentName38   * @returns {Error|undefined}39   */40  elementType: createElementTypeChecker(),41  /**42   * Checks whether a prop matches a key of an associated object43   *44   * @param props45   * @param propName46   * @param componentName47   * @returns {Error|undefined}48   */49  keyOf: createKeyOfChecker,50  /**51   * Checks if only one of the listed properties is in use. An error is given52   * if multiple have a value53   *54   * @param props55   * @param propName56   * @param componentName57   * @returns {Error|undefined}58   */59  singlePropFrom: createSinglePropFromChecker,60  all61};62function errMsg(props, propName, componentName, msgContinuation) {63  return `Invalid prop '${propName}' of value '${props[propName]}'` +64    ` supplied to '${componentName}'${msgContinuation}`;65}66/**67 * Create chain-able isRequired validator68 *69 * Largely copied directly from:70 *  https://github.com/facebook/react/blob/0.11-stable/src/core/ReactPropTypes.js#L9471 */72function createChainableTypeChecker(validate) {73  function checkType(isRequired, props, propName, componentName) {74    componentName = componentName || ANONYMOUS;75    if (props[propName] == null) {76      if (isRequired) {77        return new Error(78          `Required prop '${propName}' was not specified in '${componentName}'.`79        );80      }81    } else {82      return validate(props, propName, componentName);83    }84  }85  let chainedCheckType = checkType.bind(null, false);86  chainedCheckType.isRequired = checkType.bind(null, true);87  return chainedCheckType;88}89function createMountableChecker() {90  function validate(props, propName, componentName) {91    if (typeof props[propName] !== 'object' ||92      typeof props[propName].render !== 'function' && props[propName].nodeType !== 1) {93      return new Error(94        errMsg(props, propName, componentName,95          ', expected a DOM element or an object that has a `render` method')96      );97    }98  }99  return createChainableTypeChecker(validate);100}101function createKeyOfChecker(obj) {102  function validate(props, propName, componentName) {103    let propValue = props[propName];104    if (!obj.hasOwnProperty(propValue)) {105      let valuesString = JSON.stringify(Object.keys(obj));106      return new Error(107        errMsg(props, propName, componentName, `, expected one of ${valuesString}.`)108      );109    }110  }111  return createChainableTypeChecker(validate);112}113function createSinglePropFromChecker(arrOfProps) {114  function validate(props, propName, componentName) {115    const usedPropCount = arrOfProps116      .map(listedProp => props[listedProp])117      .reduce((acc, curr) => acc + (curr !== undefined ? 1 : 0), 0);118    if (usedPropCount > 1) {119      const [first, ...others] = arrOfProps;120      const message = `${others.join(', ')} and ${first}`;121      return new Error(122        `Invalid prop '${propName}', only one of the following ` +123        `may be provided: ${message}`124      );125    }126  }127  return validate;128}129function all(propTypes) {130  if (propTypes === undefined) {131    throw new Error('No validations provided');132  }133  if (!(propTypes instanceof Array)) {134    throw new Error('Invalid argument must be an array');135  }136  if (propTypes.length === 0) {137    throw new Error('No validations provided');138  }139  return function(props, propName, componentName) {140    for(let i = 0; i < propTypes.length; i++) {141      let result = propTypes[i](props, propName, componentName);142      if (result !== undefined && result !== null) {143        return result;144      }145    }146  };147}148function createElementTypeChecker() {149  function validate(props, propName, componentName) {150    let errBeginning = errMsg(props, propName, componentName,151      '. Expected an Element `type`');152    if (typeof props[propName] !== 'function') {153      if (React.isValidElement(props[propName])) {154        return new Error(errBeginning + ', not an actual Element');155      }156      if (typeof props[propName] !== 'string') {157        return new Error(errBeginning +158          ' such as a tag name or return value of React.createClass(...)');159      }160    }161  }162  return createChainableTypeChecker(validate);...Using AI Code Generation
1const { createElementTypeChecker } = require('@playwright/test/lib/server/frames');2const { Frame } = require('@playwright/test/lib/server/frames');3const { ElementHandle } = require('@playwright/test/lib/server/dom');4const { JSHandle } = require('@playwright/test/lib/server/jsHandle');5const frame = new Frame();6const elementHandle = new ElementHandle();7const jsHandle = new JSHandle();8const typeCheck = createElementTypeChecker('frame', Frame);9console.log(typeCheck(frame));10const typeCheck1 = createElementTypeChecker('elementHandle', ElementHandle);11console.log(typeCheck1(elementHandle));12const typeCheck2 = createElementTypeChecker('jsHandle', JSHandle);13console.log(typeCheck2(jsHandle));14const typeCheck3 = createElementTypeChecker('frame', ElementHandle);15console.log(typeCheck3(frame));16const typeCheck4 = createElementTypeChecker('elementHandle', JSHandle);17console.log(typeCheck4(elementHandle));18const typeCheck5 = createElementTypeChecker('jsHandle', Frame);19console.log(typeCheck5(jsHandle));Using AI Code Generation
1const { createElementTypeChecker } = require('playwright/lib/server/frames');2const { Frame } = require('playwright/lib/server/frames');3const { ElementHandle } = require('playwright/lib/server/frames');4const { JSHandle } = require('playwright/lib/server/frames');5const { JSHandlePreview } = require('playwright/lib/server/frames');6const { JSHandlePreviewFactory } = require('playwright/lib/server/frames');7const { ElementHandlePreview } = require('playwright/lib/server/frames');8const { ElementHandlePreviewFactory } = require('playwright/lib/server/frames');9const { ElementHandleFactory } = require('playwright/lib/server/frames');10const { FrameFactory } = require('playwright/lib/server/frames');11const frame = new Frame();12const elementHandle = new ElementHandle();13const jsHandle = new JSHandle();14const jsHandlePreview = new JSHandlePreview();15const jsHandlePreviewFactory = new JSHandlePreviewFactory();16const elementHandlePreview = new ElementHandlePreview();17const elementHandlePreviewFactory = new ElementHandlePreviewFactory();18const elementHandleFactory = new ElementHandleFactory();19const frameFactory = new FrameFactory();20const checker = createElementTypeChecker('elementHandle', 'ElementHandle', (handle) => {21  return handle instanceof ElementHandle;22}, (handle) => {23  return elementHandleFactory._fromHandle(handle);24}, (handle) => {25  return elementHandlePreviewFactory._fromHandle(handle);26}, (handle) => {27  return handle._preview;28}, (preview) => {29  return elementHandlePreviewFactory._fromPreview(preview);30}, (preview) => {31  return elementHandleFactory._fromPreview(preview);32}, (preview) => {33  return elementHandlePreviewFactory._elementHandleForPreview(preview);34}, (preview) => {35  return elementHandleFactory._elementHandleForPreview(preview);36}, (handle) => {37  return handle._context;38}, (handle) => {39  return handle._context.frame;40}, (preview) => {41  return frameFactory._fromPreview(preview);42}, (preview) => {43  return frameFactory._frameForPreview(preview);44}, (preview) => {45  return jsHandlePreviewFactory._fromPreview(preview);46}, (preview) => {47  return jsHandleFactory._fromPreview(preview);48}, (preview) => {49  return jsHandlePreviewFactory._jsHandleForPreview(pUsing AI Code Generation
1const { createElementTypeChecker } = require('playwright/lib/server/common/JSHandle');2const { ElementHandle } = require('playwright/lib/server/dom/ElementHandle');3const elementHandle = new ElementHandle();4const elementTypeChecker = createElementTypeChecker('ElementHandle');5console.log(elementTypeChecker(elementHandle));6const { createElementTypeChecker } = require('playwright/lib/server/common/JSHandle');7const { ElementHandle } = require('playwright/lib/server/dom/ElementHandle');8const elementHandle = new ElementHandle();9const elementTypeChecker = createElementTypeChecker('ElementHandle');10console.log(elementTypeChecker(elementHandle));11const { createElementTypeChecker } = require('playwright/lib/server/common/JSHandle');12const { ElementHandle } = require('playwright/lib/server/dom/ElementHandle');13const elementHandle = new ElementHandle();14const elementTypeChecker = createElementTypeChecker('ElementHandle');15console.log(elementTypeChecker(elementHandle));16const { createElementTypeChecker } = require('playwright/lib/server/common/JSHandle');17const { ElementHandle } = require('playwright/lib/server/dom/ElementHandle');18const elementHandle = new ElementHandle();19const elementTypeChecker = createElementTypeChecker('ElementHandle');20console.log(elementTypeChecker(elementHandle));21const { createElementTypeChecker } = require('playwright/lib/server/common/JSHandle');22const { ElementHandle } = require('playwright/lib/server/dom/ElementHandle');23const elementHandle = new ElementHandle();24const elementTypeChecker = createElementTypeChecker('ElementHandle');25console.log(elementTypeChecker(elementHandle));26const { createElementTypeChecker } = require('playwright/lib/server/common/JSHandle');27const { ElementHandle } = require('playwright/lib/server/dom/ElementHandle');28const elementHandle = new ElementHandle();29const elementTypeChecker = createElementTypeChecker('ElementHandle');30console.log(elementTypeChecker(elementHandle));Using AI Code Generation
1const { createElementTypeChecker } = require('@playwright/test/lib/server/frames');2const { test } = require('@playwright/test');3test('test', async ({ page }) => {4  const elementHandle = await page.$('body');5  const checker = createElementTypeChecker(['HTMLElement', 'SVGElement']);6  const result = checker(elementHandle);7  console.log(result);8});9const { createElementTypeChecker } = require('@playwright/test/lib/server/frames');10const { test } = require('@playwright/test');11test('test', async ({ page }) => {12  const elementHandle = await page.$('body');13  const checker = createElementTypeChecker(['HTMLImageElement', 'SVGElement']);14  const result = checker(elementHandle);15  console.log(result);16});Using AI Code Generation
1const { createElementTypeChecker } = require('@playwright/test/lib/utils/elementHandleDispatcher');2const { chromium } = require('playwright');3const { test } = require('@playwright/test');4test('should pass', async ({ page }) => {5  const elementHandle = await page.$('text=Get started');6  const isElementHandle = createElementTypeChecker('ElementHandle');7  console.log(isElementHandle(elementHandle));8});9test('should fail', async ({ page }) => {10  const elementHandle = await page.$('text=Get started');11  const isElementHandle = createElementTypeChecker('ElementHandle');12  console.log(isElementHandle(elementHandle));13});Using AI Code Generation
1const { createElementTypeChecker } = require('playwright/lib/server/dom.js');2const { assert } = require('chai');3const { JSDOM } = require('jsdom');4const { window } = new JSDOM();5const { document } = window;6const element = document.createElement('div');7const element2 = document.createElement('p');8const elementChecker = createElementTypeChecker('div');9const elementChecker2 = createElementTypeChecker('p');10const { createElementTypeChecker } = require('playwright/lib/server/dom.js');11const { assert } = require('chai');12const { JSDOM } = require('jsdom');13const { window } = new JSDOM();14const { document } = window;15const element = document.createElement('div');16const element2 = document.createElement('p');17const elementChecker = createElementTypeChecker('div');18assert.equal(elementChecker(element), true);19assert.equal(elementChecker(element2), false);20const elementChecker2 = createElementTypeChecker('p');21assert.equal(elementChecker2(element), false);22assert.equal(elementChecker2(element2), true);Using AI Code Generation
1const { createElementTypeChecker } = require('playwright-core/lib/server/common/JSHandle.js');2const { ElementHandle } = require('playwright-core/lib/server/dom.js');3const { Page } = require('playwright-core/lib/server/page.js');4const customElementChecker = createElementTypeChecker('custom', (value) => {5    return value === 'custom';6});7const page = new Page(null, null, null);8const customElementHandle = new ElementHandle(page, customElementChecker, 'custom', null);9console.log(await customElementHandle.evaluate(element => element));10const customElementHandle2 = await customElementHandle.$('custom');11console.log(await customElementHandle2.evaluate(element => element));12Error: Protocol error (Runtime.callFunctionOn): Cannot find context with specified id undefined13Error: Protocol error (Runtime.callFunctionOn): Cannot find context with specified id undefined14Error: Protocol error (Runtime.callFunctionOn): Cannot find context with specified id undefinedUsing AI Code Generation
1const { createElementTypeChecker } = require('@playwright/test/lib/server/frames');2const frame = page.mainFrame();3const element = frame.querySelector('button');4const isButton = createElementTypeChecker('button');5const isInput = createElementTypeChecker('input');6const { createElementTypeChecker } = require('@playwright/test/lib/server/frames');7const frame = page.mainFrame();8const element = frame.querySelector('button');9const isButton = createElementTypeChecker('button');10const isInput = createElementTypeChecker('input');11const { createElementTypeChecker } = require('@playwright/test/lib/server/frames');12const frame = page.mainFrame();13const element = frame.querySelector('button');14const isButton = createElementTypeChecker('button');15const isInput = createElementTypeChecker('input');16const { createElementTypeChecker } = require('@playwright/test/lib/server/frames');17const frame = page.mainFrame();18const element = frame.querySelector('button');19const isButton = createElementTypeChecker('button');20const isInput = createElementTypeChecker('input');21const { createElementTypeChecker } = require('@playwright/test/lib/server/frames');22const frame = page.mainFrame();23const element = frame.querySelector('button');24const isButton = createElementTypeChecker('button');25const isInput = createElementTypeChecker('input');26const { createElementTypeChecker } = require('@playwright/test/lib/server/frames');27const frame = page.mainFrame();28const element = frame.querySelector('button');29const isButton = createElementTypeChecker('button');Using AI Code Generation
1const { createElementTypeChecker } = require('playwright/lib/server/dom.js');2const isHTML = createElementTypeChecker('HTML');3const isButton = createElementTypeChecker('Button');4const isDiv = createElementTypeChecker('Div');5const isSpan = createElementTypeChecker('Span');6const isAnchor = createElementTypeChecker('Anchor');7const isTextArea = createElementTypeChecker('TextArea');8const isInput = createElementTypeChecker('Input');9const isLabel = createElementTypeChecker('Label');10const isSelect = createElementTypeChecker('Select');11const isOption = createElementTypeChecker('Option');12const isTable = createElementTypeChecker('Table');13const isTableRow = createElementTypeChecker('TableRow');14const isTableCell = createElementTypeChecker('TableCell');15const isList = createElementTypeChecker('List');16const isListItem = createElementTypeChecker('ListItem');17const isOrderedList = createElementTypeChecker('OrderedList');18const isUnorderedList = createElementTypeChecker('UnorderedList');19const isImage = createElementTypeChecker('Image');20const isParagraph = createElementTypeChecker('Paragraph');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.
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