Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use tryCatchFunc method in Best

Best JavaScript code snippet using best

Source:register-promise-worker.ts

...7// Respond to message from parent thread8// ctx.addEventListener('message', event => {9//   let message: ISendMessage = event.data;10// });11// function tryCatchFunc(callback, message) {12//   try {13//     return { res: callback(message) };14//   } catch (e) {15//     return { err: e };16//   }17// }18// function handleIncomingMessage(e, callback, messageId, message) {19//   var result = tryCatchFunc(callback, message);20//   if (result.err) {21//     postOutgoingMessage(e, messageId, result.err);22//   } else if (!isPromise(result.res)) {23//     postOutgoingMessage(e, messageId, null, result.res);24//   } else {25//     result.res.then(26//       function(finalResult) {27//         postOutgoingMessage(e, messageId, null, finalResult);28//       },29//       function(finalError) {30//         postOutgoingMessage(e, messageId, finalError);31//       }32//     );33//   }34// }35export class RegisterPromiseWorker {36  public callback: Function;37  constructor() {38    console.log('Called');39    this.callback = null;40  }41  register(callback) {42    this.callback = callback;43    return this;44  }45  start() {46    console.log('Start Listening');47    ctx.addEventListener('message', this.onIncomingMessage.bind(this));48  }49  postOutgoingMessage(messageId, error, result?) {50    // function postMessage(msg) {51    //   /* istanbul ignore if */52    //   if (typeof ctx.postMessage !== 'function') {53    //     // service worker54    //     e.ports[0].postMessage(msg);55    //   } else {56    //     // web worker57    //     ctx.postMessage(msg);58    //   }59    // }60    if (error) {61      /* istanbul ignore else */62      if (typeof console !== 'undefined' && 'error' in console) {63        // This is to make errors easier to debug. I think it's important64        // enough to just leave here without giving the user an option65        // to silence it.66        console.error('Worker caught an error:', error);67      }68      ctx.postMessage(<IResultMessage>{69        messageId,70        error: error.message71      });72    } else {73      ctx.postMessage(<IResultMessage>{74        messageId,75        result76      });77    }78  }79  tryCatchFunc(fn: Function, message): IRes {80    try {81      return { res: Promise.resolve(fn(message)) };82    } catch (e) {83      return { err: e };84    }85  }86  handleIncomingMessage(fn: Function, message: ISendMessage) {87    let result = this.tryCatchFunc(fn, message.payload);88    if (result.err) {89      this.postOutgoingMessage(message.messageId, result.err);90    } else {91      result.res92        .then(finalResult => this.postOutgoingMessage(message.messageId, null, finalResult))93        .catch(e => this.postOutgoingMessage(message.messageId, e));94    }95  }96  onIncomingMessage(e) {97    let message: ISendMessage = e.data;98    if (!message) {99      // message isn't stringified json; ignore100      return;101    }102    if (typeof this.callback !== 'function') {103      this.postOutgoingMessage(message.messageId, new Error('Please pass a function into register().'));104    } else {105      this.handleIncomingMessage(this.callback, message);106    }107  }108}109// function registerPromiseWorker(callback: Function) {110//   // function postOutgoingMessage(messageId, error, result?) {111//   //   // function postMessage(msg) {112//   //   //   /* istanbul ignore if */113//   //   //   if (typeof ctx.postMessage !== 'function') {114//   //   //     // service worker115//   //   //     e.ports[0].postMessage(msg);116//   //   //   } else {117//   //   //     // web worker118//   //   //     ctx.postMessage(msg);119//   //   //   }120//   //   // }121//   //   if (error) {122//   //     /* istanbul ignore else */123//   //     if (typeof console !== 'undefined' && 'error' in console) {124//   //       // This is to make errors easier to debug. I think it's important125//   //       // enough to just leave here without giving the user an option126//   //       // to silence it.127//   //       console.error('Worker caught an error:', error);128//   //     }129//   //     postMessage(<IResultMessage>{130//   //       messageId,131//   //       error: error.message132//   //     });133//   //   } else {134//   //     postMessage(<IResultMessage>{135//   //       messageId,136//   //       result137//   //     });138//   //   }139//   // }140//   // function tryCatchFunc(fn: Function, message): IRes {141//   //   try {142//   //     return { res: Promise.resolve(fn(message)) };143//   //   } catch (e) {144//   //     return { err: e };145//   //   }146//   // }147//   // function handleIncomingMessage(fn: Function, message: ISendMessage) {148//   //   let result = tryCatchFunc(fn, message.payload);149//   //   if (result.err) {150//   //     postOutgoingMessage(message.messageId, result.err);151//   //   } else {152//   //     result.res153//   //       .then(finalResult => postOutgoingMessage(message.messageId, null, finalResult))154//   //       .catch(e => postOutgoingMessage(message.messageId, e));155//   //   }156//   // }157//   function onIncomingMessage(e) {158//     let message: ISendMessage = e.data;159//     if (!message) {160//       // message isn't stringified json; ignore161//       return;162//     }...

Either.ts

Source:Either.ts

...64console.log(existsFunc(right(1)))65console.log(existsFunc(right(2)))66// Either - tryCatch67const tryCatchFunc = (s: string) => tryCatch(() => JSON.parse(s), (e) => `${e}`)68console.log(tryCatchFunc('{ "msg": "Hello, world!" }'))...

async.ts

Source:async.ts

1export type TryCatchFunc<TFunc extends (this: any, ...args: any[]) => Promise<any>> = {2	(this: ThisParameterType<TFunc>, ...args: Parameters<TFunc>): Promise<{ data: any, error: Error }>;3};4/**5 * wraps an async function in try catch6 * @param asyncFunc7 * @returns {8 * 		data: the results from the async func,9 * 		error: the caught error10 *	}11 */12export function tryCatch<TFunc extends (this: any, ...newArgs: any[]) => any>(13	asyncFunc: TFunc14): TryCatchFunc<TFunc> {15	async function tryCatchPromise(16		this: ThisParameterType<TFunc>,17		...newArgs: Parameters<TFunc>18	): Promise<{ data: any, error: Error }> {19		let data: any, error: any;20		try {21			data = await asyncFunc.apply(this, newArgs);22		} catch (e) {23			error = e;24		}25		return { data, error };26	}27	return tryCatchPromise;...

Using AI Code Generation

1const BestPractices = require('./BestPractices.js');2const bestPractices = new BestPractices();3const fs = require('fs');4const path = require('path');5const pathToTestFile = path.join(__dirname, 'test.txt');6const pathToTestFile2 = path.join(__dirname, 'test2.txt');7const pathToTestFile3 = path.join(__dirname, 'test3.txt');8bestPractices.tryCatchFunc(pathToTestFile, 'utf8', (err, data) => {9    if (err) {10        console.log(err);11    }12    console.log(data);13});14bestPractices.tryCatchFunc(pathToTestFile2, 'utf8', (err, data) => {15    if (err) {16        console.log(err);17    }18    console.log(data);19});20bestPractices.tryCatchFunc(pathToTestFile3, 'utf8', (err, data) => {21    if (err) {22        console.log(err);23    }24    console.log(data);25});26bestPractices.tryCatchFunc(pathToTestFile, 'utf8', (err, data) => {27    if (err) {28        console.log(err);29    }30    console.log(data);31});32bestPractices.tryCatchFunc(pathToTestFile2, 'utf8', (err, data) => {33    if (err) {34        console.log(err);35    }36    console.log(data);37});38bestPractices.tryCatchFunc(pathToTestFile3, 'utf8', (err, data) => {39    if (err) {40        console.log(err);41    }42    console.log(data);43});44bestPractices.tryCatchFunc(pathToTestFile, 'utf8', (err, data) => {45    if (err) {46        console.log(err);47    }48    console.log(data);49});50bestPractices.tryCatchFunc(pathToTestFile2, 'utf8', (err, data) => {51    if (err) {52        console.log(err);53    }54    console.log(data);55});56bestPractices.tryCatchFunc(pathToTestFile3, 'utf

Using AI Code Generation

1const BestPractice = require("./BestPractice");2try {3  BestPractice.tryCatchFunc();4} catch (error) {5  console.log("Error in tryCatchFunc method");6  console.log(error);7}8try {9  BestPractice.callbackFunc();10} catch (error) {11  console.log("Error in callbackFunc method");12  console.log(error);13}14try {15  BestPractice.promiseFunc();16} catch (error) {17  console.log("Error in promiseFunc method");18  console.log(error);19}20try {21  BestPractice.asyncAwaitFunc();22} catch (error) {23  console.log("Error in asyncAwaitFunc method");24  console.log(error);25}

Using AI Code Generation

1const BestError = require('best-error')2const func = async () => {3  await tryCatchFunc(async () => {4    throw new Error('some error')5  }, 'Error message')6}7const func2 = async () => {8  try {9    await tryCatch(async () => {10      throw new Error('some error')11    }, 'Error message')12  } catch (error) {13    console.log(error)14  }15}16func()17func2()

Using AI Code Generation

1const tryCatchFunc = require('./bestPractice')2tryCatchFunc(2, 0, (a, b) => a / b)3tryCatchFunc(2, 1, (a, b) => a / b)4tryCatchFunc(2, 2, (a, b) => a / b)5tryCatchFunc(2, 3, (a, b) => a / b)6tryCatchFunc(2, 4, (a, b) => a / b)7tryCatchFunc(2, 5, (a, b) => a / b)8tryCatchFunc(2, 6, (a, b) => a / b)9tryCatchFunc(2, 7, (a, b) => a / b)10tryCatchFunc(2, 8, (a, b) => a / b)11tryCatchFunc(2, 9, (a, b) => a / b)12tryCatchFunc(2, 10, (a, b) => a / b)13tryCatchFunc(2, 11, (a, b) => a / b)14tryCatchFunc(2, 12, (a, b) => a / b)15tryCatchFunc(2, 13, (a, b) => a / b)16tryCatchFunc(2, 14, (a, b) => a / b)17tryCatchFunc(2, 15, (a, b) => a / b)18tryCatchFunc(2, 16, (a, b) => a / b)19tryCatchFunc(2, 17, (a, b) => a / b)20tryCatchFunc(2, 18, (a, b) => a / b)21tryCatchFunc(2, 19, (a, b) => a / b)22tryCatchFunc(2, 20, (a, b) => a / b)23tryCatchFunc(2, 21, (a, b) => a / b)24tryCatchFunc(2, 22, (a, b) => a / b)25tryCatchFunc(2, 23, (a, b) => a / b)26tryCatchFunc(2, 24, (a, b) => a / b)27tryCatchFunc(2, 25, (a,

Using AI Code Generation

1const { tryCatchFunc } = require('best-practice-error');2const fs = require('fs');3tryCatchFunc(4  () => {5    fs.readFileSync('non-existent-file.txt');6  },7  err => {8    console.log(err);9  }10);

Using AI Code Generation

1const BestPractice = require('./BestPractice');2const tryCatchFunc = BestPractice.tryCatchFunc;3const testFunc = async () => {4  const result = await tryCatchFunc(5    async () => {6      throw new Error('test');7    },8    async (err) => {9      console.log('error: ', err);10      return 'error';11    },12    async () => {13      return 'success';14    }15  );16  console.log(result);17};18testFunc();

Using AI Code Generation

1const { tryCatchFunc, BestPracticeError } = require('best-practice-error');2const func = () => {3  throw new BestPracticeError('this is a test', {4    data: { error: 'test' },5  });6};7tryCatchFunc(func);8const { tryCatchFunc, BestPracticeError } = require('best-practice-error');9const func = () => {10  throw new BestPracticeError('this is a test', {11    data: { error: 'test' },12  });13};14tryCatchFunc(func);15const { tryCatchFunc, BestPracticeError } = require('best-practice-error');16const func = () => {17  throw new BestPracticeError('this is a test', {18    data: { error: 'test' },19  });20};21tryCatchFunc(func);22const { tryCatchFunc, BestPracticeError } = require('best-practice-error');23const func = () => {24  throw new BestPracticeError('this is a test', {25    data: { error: 'test' },26  });27};28tryCatchFunc(func);29const { tryCatchFunc, BestPracticeError } = require('best-practice-error');30const func = () => {31  throw new BestPracticeError('this is a test', {32    data: { error: 'test' },33  });34};35tryCatchFunc(func);36const { tryCatchFunc, BestPracticeError } = require('best-practice-error');37const func = () => {38  throw new BestPracticeError('this is a test', {

Using AI Code Generation

1var BestPracticeError = require('./BestPracticeError');2var error = new BestPracticeError();3error.tryCatchFunc(function(){4    throw new Error('this is a test');5}, 'test.js', 'testFunc', 'this is a test error');6var BestPracticeError = require('./BestPracticeError');7var error = new BestPracticeError();8error.tryCatchFunc(function(){9    throw new Error('this is a test');10}, 'test.js', 'testFunc', 'this is a test error');11var BestPracticeError = require('./BestPracticeError');12var error = new BestPracticeError();13error.tryCatchFunc(function(){14    throw new Error('this is a test');15}, 'test.js', 'testFunc', 'this is a test error');16var BestPracticeError = require('./BestPracticeError');17var error = new BestPracticeError();18error.tryCatchFunc(function(){19    throw new Error('this is a test');20}, 'test.js', 'testFunc', 'this is a test error');21var BestPracticeError = require('./BestPracticeError');22var error = new BestPracticeError();23error.tryCatchFunc(function(){24    throw new Error('this is a test');25}, 'test.js', 'testFunc', 'this is a test error');26var BestPracticeError = require('./BestPracticeError');27var error = new BestPracticeError();28error.tryCatchFunc(function(){29    throw new Error('this is a test');30}, 'test.js', 'testFunc', 'this is a test error');31var BestPracticeError = require('./BestPracticeError');32var error = new BestPracticeError();

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.