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How to use getLegacyDevServer method in Cypress

Best JavaScript code snippet using cypress

index.js

Source:index.js

...13    template: path.resolve(__dirname, 'index-template.html'),14  })15}16// Legacy signature17module.exports = getLegacyDevServer(devServer, (config) => {18  config.env.reactDevtools = true19  return config20})21// New signature22module.exports.devServer = devServer23// This example plugins/index.js can be used to load plugins24//25// You can change the location of this file or turn off loading26// the plugins file with the 'pluginsFile' configuration option.27//28// You can read more here:29// https://on.cypress.io/plugins-guide30// ***********************************************************31// This function is called when a project is opened or re-opened (e.g. due to...

legacy-setup-dev-server.js

Source:legacy-setup-dev-server.js

1function getLegacyDevServer (devServer, postProcessConfig = (config) => config) {2  return (on, config, ...args) => {3    on('dev-server:start', (cypressDevServerConfig) => {4      return devServer(cypressDevServerConfig, ...args)5    })6    return postProcessConfig(config)7  }8}...

Using AI Code Generation

1const { getLegacyDevServer } = require('@cypress/webpack-dev-server');2const webpackConfig = require('../../webpack.config.js');3module.exports = (on, config) => {4  on('dev-server:start', options => {5    return getLegacyDevServer(6    );7  });8  return config;9};10const path = require('path');11const webpackConfig = require(path.resolve(__dirname, '..', '..', 'webpack.config.js'));12const { startDevServer } = require('@cypress/webpack-dev-server');13module.exports = (on, config) => {14  on('dev-server:start', (options) => {15    return startDevServer({16    });17  });18  return config;19};20const path = require('path');21const webpackConfig = require(path.resolve(__dirname, '..', '..', 'webpack.config.js'));22const { startDevServer } = require('@cypress/webpack-dev-server');23module.exports = (on, config) => {24  on('dev-server:start', (options) => {25    return startDevServer({26    });27  });28  return config;29};30const webpackConfig = require('../../webpack.config.js');31const { startDevServer } = require('@cypress/webpack-dev-server');32module.exports = (on, config) => {33  on('dev-server:start', (options) => {34    return startDevServer({35    });36  });37  return config;38};39const webpackConfig = require('../../webpack.config.js');40const { startDevServer } = require('@cypress/webpack-dev-server');41module.exports = (on, config) => {42  on('dev-server:start', (options) => {43    return startDevServer({44    });45  });46  return config;47};48const webpackConfig = require('../../webpack.config.js');49const { startDevServer } = require('@cypress/webpack-dev-server');50module.exports = (on, config) => {51  on('dev-server:start', (options) => {52    return startDevServer({53    });54  });55  return config;56};

Using AI Code Generation

1const getLegacyDevServer = require('@cypress/react/plugins/next')2module.exports = (on, config) => {3  on('dev-server:start', (options) => {4    return getLegacyDevServer(options)5  })6}7const getLegacyDevServer = require('@cypress/react/plugins/next')8module.exports = (on, config) => {9  on('dev-server:start', (options) => {10    return getLegacyDevServer(options)11  })12}13const { getDevServer } = require('@cypress/react/plugins/next')14module.exports = (on, config) => {15  on('dev-server:start', (options) => {16    return getDevServer(options)17  })18}19const { getDevServer } = require('@cypress/react/plugins/next')20module.exports = (on, config) => {21  on('dev-server:start', (options) => {22    return getDevServer(options)23  })24}25const { getDevServer } = require('@cypress/react/plugins/next')26module.exports = (on, config) => {27  on('dev-server:start', (options) => {28    return getDevServer(options)29  })30}31const { getDevServer } = require('@cypress/react/plugins/next')32module.exports = (on, config) => {33  on('dev-server:start', (options) => {34    return getDevServer(options)35  })36}37const { getDevServer } = require('@cypress/react/plugins/next')38module.exports = (on, config) => {39  on('dev-server:start', (options) => {

Using AI Code Generation

1import { getLegacyDevServer } from '@cypress/webpack-dev-server';2import { getWebpackConfig } from '@cypress/webpack-preprocessor';3const webpackOptions = getWebpackConfig(on, config);4const devServer = getLegacyDevServer(on, config);5module.exports = (on, config) => {6  on('file:preprocessor', webpackPreprocessor);7  return config;8};9const path = require('path');10module.exports = {11  output: {12    path: path.resolve(__dirname, 'cypress/integration/webpack'),13  },14  module: {15      {16      },17  },18  resolve: {19  },20};21import { add } from './add';22import { subtract } from './subtract';23import { multiply } from './multiply';24import { divide } from './divide';25describe('Calculator', () => {26  it('should add two numbers', () => {27    expect(add(1, 2)).to.equal(3);28  });29  it('should subtract two numbers', () => {30    expect(subtract(3, 2)).to.equal(1);31  });32  it('should multiply two numbers', () => {33    expect(multiply(3,

Using AI Code Generation

1const cypress = require('cypress')2const { getLegacyDevServer } = cypress3devServer.start()4devServer.visit('/about')5devServer.stop()6describe('My First Test', () => {7  before(() => {8    cy.visit('/about')9  })10  it('Does not do much!', () => {11    expect(true).to.equal(true)12  })13})14module.exports = (on, config) => {15  on('dev-server:start', async (options) => {16    const devServer = getLegacyDevServer(options.config.baseUrl)17    await devServer.start()18  })19  on('dev-server:stop', async (devServer) => {20    await devServer.stop()21  })22}23Cypress.on('dev-server:start', async (options) => {24  const devServer = getLegacyDevServer(options.config.baseUrl)25  await devServer.start()26})27Cypress.on('dev-server:stop', async (devServer) => {28  await devServer.stop()29})30module.exports = (on, config) => {31  on('dev-server:start', async (options) => {32    const devServer = getLegacyDevServer(options.config.baseUrl)33    await devServer.start()34  })35  on('dev-server:stop', async (devServer) => {36    await devServer.stop()37  })38}39const cypress = require('cypress')40const { getLegacyDevServer } = cypress41devServer.start()42devServer.visit('/about')43devServer.stop()44describe('My First Test', () => {45  before(() => {46    cy.visit('/about')47  })48  it('Does not do much!', () => {49    expect(true).to.equal(true)

Using AI Code Generation

1const cypress = require('cypress')2cypress.run({3})4.then((results) => {5    console.log(results)6})7.catch((err) => {8    console.error(err)9})

Using AI Code Generation

1const devServer = getLegacyDevServer('app')2devServer.listen(8080, 'localhost')3devServer.close()4const devServer = getLegacyDevServer('app')5devServer.listen(8080, 'localhost')6devServer.close()

Using AI Code Generation

1const devServer = Cypress.config('devServer')2devServer.app.get('/test', (req, res) => {3  res.send('hello world')4})5describe('My First Test', function() {6  it('Visits the Kitchen Sink', function() {7    cy.request('/test').then((resp) => {8      expect(resp.body).to.equal('hello world')9    })10  })11})12const devServer = Cypress.config('devServer')13devServer.app.use((req, res, next) => {14  res.json({ random: Math.random() })15})16describe('My First Test', function() {17  it('Visits the Kitchen Sink', function() {18    cy.request('/').then((resp) => {19      expect(resp.body).to.have.property('random')20    })21  })22})

Cypress Tutorial

Cypress is a renowned Javascript-based open-source, easy-to-use end-to-end testing framework primarily used for testing web applications. Cypress is a relatively new player in the automation testing space and has been gaining much traction lately, as evidenced by the number of Forks (2.7K) and Stars (42.1K) for the project. LambdaTest’s Cypress Tutorial covers step-by-step guides that will help you learn from the basics till you run automation tests on LambdaTest.

Chapters:

What is Cypress? -
Why Cypress? - Learn why Cypress might be a good choice for testing your web applications.
Features of Cypress Testing - Learn about features that make Cypress a powerful and flexible tool for testing web applications.
Cypress Drawbacks - Although Cypress has many strengths, it has a few limitations that you should be aware of.
Cypress Architecture - Learn more about Cypress architecture and how it is designed to be run directly in the browser, i.e., it does not have any additional servers.
Browsers Supported by Cypress - Cypress is built on top of the Electron browser, supporting all modern web browsers. Learn browsers that support Cypress.
Selenium vs Cypress: A Detailed Comparison - Compare and explore some key differences in terms of their design and features.
Cypress Learning: Best Practices - Take a deep dive into some of the best practices you should use to avoid anti-patterns in your automation tests.
How To Run Cypress Tests on LambdaTest? - Set up a LambdaTest account, and now you are all set to learn how to run Cypress tests.

Certification

You can elevate your expertise with end-to-end testing using the Cypress automation framework and stay one step ahead in your career by earning a Cypress certification. Check out our Cypress 101 Certification.