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How to use isJavaScriptErrorInEvaluate method in Playwright Internal

Best JavaScript code snippet using playwright-internal

javascript.js

Source:javascript.js

...220  return expression;221} // Error inside the expression evaluation as opposed to a protocol error.222class JavaScriptErrorInEvaluate extends Error {}223exports.JavaScriptErrorInEvaluate = JavaScriptErrorInEvaluate;224function isJavaScriptErrorInEvaluate(error) {225  return error instanceof JavaScriptErrorInEvaluate;...

crExecutionContext.js

Source:crExecutionContext.js

...121      type: 'undefined'122    }123  };124  if (error instanceof TypeError && error.message.startsWith('Converting circular structure to JSON')) (0, _stackTrace.rewriteErrorMessage)(error, error.message + ' Are you passing a nested JSHandle?');125  if (!js.isJavaScriptErrorInEvaluate(error) && !(0, _protocolError.isSessionClosedError)(error)) throw new Error('Execution context was destroyed, most likely because of a navigation.');126  throw error;127}128function potentiallyUnserializableValue(remoteObject) {129  const value = remoteObject.value;130  const unserializableValue = remoteObject.unserializableValue;131  return unserializableValue ? js.parseUnserializableValue(unserializableValue) : value;132}133function renderPreview(object) {134  if (object.type === 'undefined') return 'undefined';135  if ('value' in object) return String(object.value);136  if (object.unserializableValue) return String(object.unserializableValue);137  if (object.description === 'Object' && object.preview) {138    const tokens = [];139    for (const {...

ffExecutionContext.js

Source:ffExecutionContext.js

...112      value: undefined113    }114  };115  if (error instanceof TypeError && error.message.startsWith('Converting circular structure to JSON')) (0, _stackTrace.rewriteErrorMessage)(error, error.message + ' Are you passing a nested JSHandle?');116  if (!js.isJavaScriptErrorInEvaluate(error) && !(0, _protocolError.isSessionClosedError)(error)) throw new Error('Execution context was destroyed, most likely because of a navigation.');117  throw error;118}119function potentiallyUnserializableValue(remoteObject) {120  const value = remoteObject.value;121  const unserializableValue = remoteObject.unserializableValue;122  return unserializableValue ? js.parseUnserializableValue(unserializableValue) : value;123}124function renderPreview(object) {125  if (object.type === 'undefined') return 'undefined';126  if (object.unserializableValue) return String(object.unserializableValue);127  if (object.type === 'symbol') return 'Symbol()';128  if (object.subtype === 'regexp') return 'RegExp';129  if (object.subtype === 'weakmap') return 'WeakMap';130  if (object.subtype === 'weakset') return 'WeakSet';...

wkExecutionContext.js

Source:wkExecutionContext.js

...121  const isUnserializable = remoteObject.type === 'number' && ['NaN', '-Infinity', 'Infinity', '-0'].includes(remoteObject.description);122  return isUnserializable ? js.parseUnserializableValue(remoteObject.description) : value;123}124function rewriteError(error) {125  if (!js.isJavaScriptErrorInEvaluate(error) && !(0, _protocolError.isSessionClosedError)(error)) return new Error('Execution context was destroyed, most likely because of a navigation.');126  return error;127}128function renderPreview(object) {129  if (object.type === 'undefined') return 'undefined';130  if ('value' in object) return String(object.value);131  if (object.description === 'Object' && object.preview) {132    const tokens = [];133    for (const {134      name,135      value136    } of object.preview.properties) tokens.push(`${name}: ${value}`);137    return `{${tokens.join(', ')}}`;138  }139  if (object.subtype === 'array' && object.preview) {...

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  try {7    await page.evaluate(() => {8      const obj = {};9      obj.foo.bar();10    });11  } catch (error) {12    const isJS = page.isJavaScriptErrorInEvaluate(error);13    console.log('isJS', isJS);14  }15  await browser.close();16})();17const { chromium } = require('playwright');18(async () => {19  const browser = await chromium.launch();20  const context = await browser.newContext();21  const page = await context.newPage();22  try {23    await page.evaluate(() => {24      const obj = {};25      obj.foo.bar();26    });27  } catch (error) {28    const isJS = page.isJavaScriptErrorInEvaluate(error);29    console.log('isJS', isJS);30  }31  await browser.close();32})();33const { chromium } = require('playwright');34(async () => {35  const browser = await chromium.launch();36  const context = await browser.newContext();37  const page = await context.newPage();38  try {39    await page.evaluate(() => {40      const obj = {};41      obj.foo.bar();42    });43  } catch (error) {44    const isJS = page.isJavaScriptErrorInEvaluate(error);45    console.log('isJS', isJS);46  }47  await browser.close();48})();49const { chromium } = require('playwright');50(async () => {51  const browser = await chromium.launch();52  const context = await browser.newContext();53  const page = await context.newPage();54  try {55    await page.evaluate(() => {

Using AI Code Generation

1const { isJavaScriptErrorInEvaluate } = require('playwright/lib/internal/stackTrace');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const page = await browser.newPage();6  try {7    await page.evaluate(() => { throw new Error('foo'); });8  } catch (e) {9    console.log(isJavaScriptErrorInEvaluate(e));10  }11  await browser.close();12})();

Using AI Code Generation

1const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch({ headless: false, slowMo: 100 });5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.evaluate(() => {8    throw new Error('this is a test');9  });10  await browser.close();11})();12const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');13const { chromium } = require('playwright');14(async () => {15  const browser = await chromium.launch({ headless: false, slowMo: 100 });16  const context = await browser.newContext();17  const page = await context.newPage();18  await page.evaluate(() => {19    throw new Error('this is a test');20  });21  await browser.close();22})();23const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');24const { chromium } = require('playwright');25(async () => {26  const browser = await chromium.launch({ headless: false, slowMo: 100 });27  const context = await browser.newContext();28  const page = await context.newPage();29  await page.evaluate(() => {30    throw new Error('this is a test');31  });32  await browser.close();33})();34const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');35const { chromium } = require('playwright');36(async () => {37  const browser = await chromium.launch({ headless: false, slowMo: 100 });38  const context = await browser.newContext();39  const page = await context.newPage();40  await page.evaluate(() => {41    throw new Error('this is a test');42  });

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    throw new Error('Error in evaluate');8  });9  await browser.close();10})();11    at ExecutionContext._evaluateInternal (C:\Users\username\Documents\playwright\playwright\lib\client\page.js:1:3349)12    at processTicksAndRejections (internal/process/task_queues.js:93:5)13    at async Page.evaluate (C:\Users\username\Documents\playwright\playwright\lib\client\page.js:1:2303)14    at async Object.<anonymous> (C:\Users\username\Documents\playwright\playwright\test.js:8:3)

Using AI Code Generation

1const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/chromium/crExecutionContext.js');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    window.test = 1;8  });9  await page.evaluate(() => {10    window.test.test();11  });12  await browser.close();13})();14const { test, expect } = require('@playwright/test');15test('should throw an error', async ({ page }) => {16  const error = await page.evaluate(() => {17    window.test.test();18  }).catch(e => e);19  expect(error).toBeTruthy();20  expect(error.message).toContain('window.test.test is not a function');21});22const { test, expect } = require('@playwright/test');23test('should throw an error', async ({ page }) => {24  const error = await page.evaluate(() => {25    window.test.test();26  }).catch(e => e);27  expect(error).toBeTruthy();28  expect(error.message).toContain('window.test.test is not a function');29});

Using AI Code Generation

1const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/supplements/recorder/recorderApp');2const { chromium } = require('playwright');3const fs = require('fs');4(async () => {5  const browser = await chromium.launch();6  const context = await browser.newContext();7  const page = await context.newPage();8  const error = await page.evaluate(() => {9    return new Error('my error');10  });11  const isJavaScriptError = isJavaScriptErrorInEvaluate(error);12  fs.writeFileSync('result.txt', isJavaScriptError);13  await browser.close();14})();15I think this is a good idea, but I am not sure about the name. Maybe just isJavaScriptError() ?16I think this is a good idea, but I am not sure about the name. Maybe just  isJavaScriptError()  ?17I think this is a good idea, but I am not sure about the name. Maybe just  isJavaScriptError()  ?

Using AI Code Generation

1const { isJavaScriptErrorInEvaluate } = require("playwright/lib/server/frames");2const { chromium } = require("playwright");3const { assert } = require("console");4const { test } = require("mocha");5(async () => {6  const browser = await chromium.launch();7  const context = await browser.newContext();8  const page = await context.newPage();9  try {10    await page.evaluate(() => {11      throw new Error("Error in evaluate");12    });13  } catch (error) {14    assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);15  }16  try {17    await page.evaluate(() => {18      const a = {};19      a.b.c();20    });21  } catch (error) {22    assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);23  }24  try {25    await page.evaluate(() => {26      return new Promise((resolve, reject) => {27        setTimeout(() => {28          reject("Error in evaluate");29        }, 1000);30      });31    });32  } catch (error) {33    assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);34  }35  try {36    await page.evaluate(() => {37      return new Promise((resolve, reject) => {38        setTimeout(() => {39          reject(new Error("Error in evaluate"));40        }, 1000);41      });42    });43  } catch (error) {44    assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);45  }46  try {47    await page.evaluate(() => {48      return new Promise((resolve, reject) => {49        setTimeout(() => {50          reject(new Error("Error in evaluate"));51        }, 1000);52      });53    });54  } catch (error) {55    assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);56  }57  try {58    await page.evaluate(() => {59      return new Promise((resolve, reject) => {60        setTimeout(() => {61          reject("Error in evaluate");62        }, 1000);63      });64    });65  } catch (error) {66    assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);67  }68  try {69    await page.evaluate(() => {

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.

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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.
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