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How to use defineDevServerConfig method in Cypress

Best JavaScript code snippet using cypress

index.js

Source:index.js

1const { startDevServer } = require('@cypress/webpack-dev-server')2const getBabelWebpackConfig = require('./getBabelWebpackConfig')3const { getLegacyDevServer } = require('../utils/legacy-setup-dev-server')4function devServer (cypressDevServerConfig, devServerConfig) {5  return startDevServer({6    options: cypressDevServerConfig,7    webpackConfig: getBabelWebpackConfig(cypressDevServerConfig.config, devServerConfig),8  })9}10// Legacy signature11module.exports = getLegacyDevServer(devServer, (config) => {12  config.env.reactDevtools = true13  return config14})15// New signature16module.exports.devServer = devServer17module.exports.defineDevServerConfig = function (devServerConfig) {18  return devServerConfig...

plugins.js

Source:plugins.js

...8module.exports = (on, config) => {9  on('dev-server:start', async (options) => {10    return devServer(11      options,12      defineDevServerConfig({13        configFile: path.resolve(__dirname, '..', '..', 'vite.config.ts'),14      }),15    )16  })17  config.testFiles = '**/smoke.spec.ts'18  return config...

Using AI Code Generation

1const { defineDevServerConfig } = require('@cypress/webpack-dev-server')2const webpackConfig = require('@vue/cli-service/webpack.config.js')3module.exports = (on, config) => {4  on('dev-server:start', (options) => {5    return defineDevServerConfig(webpackConfig, options)6  })7}8{9}10{11  "scripts": {12  },13  "devDependencies": {14  }15}16module.exports = (on, config) => {17  require('@cypress/vue/dist/plugins/webpack')(on, config)18  require('@cypress/vue/dist/plugins/webpack-dev-server')(on, config)19}20import '@cypress/vue/dist/support'21describe('My First Test', () => {22  it('Visits the app root url', () => {23    cy.visit('/')24    cy.contains('h1', 'Welcome to Your Vue.js App')25  })26})27const { defineDevServerConfig } = require('@cypress/webpack-dev-server')28const webpackConfig = require('@vue/cli-service/webpack.config.js')29module.exports = (on, config) => {30  on('dev-server:start', (options) => {

Using AI Code Generation

1const { defineDevServerConfig } = require('@cypress/webpack-dev-server')2const webpackConfig = require('@vue/cli-service/webpack.config.js')3module.exports = (on, config) => {4  on('dev-server:start', (options) => {5    return defineDevServerConfig(webpackConfig, options)6  })7}8{9}10{11  "scripts": {12  },13  "devDependencies": {14  }15}16module.exports = (on, config) => {17  require('@cypress/vue/dist/plugins/webpack')(on, config)18  require('@cypress/vue/dist/plugins/webpack-dev-server')(on, config)19}20import '@cypress/vue/dist/support'21describe('My First Test', () => {22  it('Visits the app root url', () => {23    cy.visit('/')24    cy.contains('h1', 'Welcome to Your Vue.js App')25  })26})27const { defineDevServerConfig } = require('@cypress/webpack-dev-server')28const webpackConfig = require('@vue/cli-service/webpack.config.js')29module.exports = (on, config) => {30  on('dev-server:start', (options) => {

Using AI Code Generation

1const { defineDevServerConfig } = require('@cypress/webpack-dev-server')2const webpackConfig = require('@vue/cli-service/webpack.config.js')3module.exports = (on, config) => {4  on('dev-server:start', (options) => {5    return defineDevServerConfig(webpackConfig, options)6  })7}8{9}10const { startDevServer } = require('@cypress/webpack-dev-server')11const webpackConfig = require('@vue/cli-service/webpack.config.js')12module.exports = (on, config) => {13  on('dev-server:start', (options) => {14    return startDevServer({15    })16  })17}18const { startDevServer } = require('@cypress/webpack-dev-server')19const webpackConfig = require('@vue/cli-service/webpack.config.js')20module.exports = (on, config) => {21  on('dev-server:start', async (options) => {22    return startDevServer({23    })24  })25}26const { startDevServer } = require('@cypress/webpack-dev-server')27const webpackConfig = require('@vue/cli-service/webpack.config.js')28module.exports = (on, config) => {29  on('dev-server:start', async (options) => {30    return startDevServer({31    })32  })33}34const { startDevServer } = require('@cypress/webpack-dev-server')35const webpackConfig = require('@vue/cli-service/webpack.config.js')36module.exports = (on, config) => {37  on('dev-server:start', async (options) => {38    return startDevServer({39    })40  })41}42const { startDevServer } = require('@cypress/webpack-dev-server')43const webpackConfig = require('@vue/cli-service/webpack.config.js')44module.exports = (on, config

Using AI Code Generation

1const { defineDevServerConfig } = require('@cypress/vite-dev-server')2const { startDevServer } = require('@cypress/webpack-dev-server')3module.exports = (on, config) => {4  on('dev-server:start', (options) => {5    return startDevServer({6      viteConfig: defineDevServerConfig(config),7    })8  })9}10{11  "devServer": {12  },13}14module.exports = (on, config) => {15}16import './commands'17describe('My First Test', () => {18  it('Does not do much!', () => {19    expect(true).to.equal(true)20  })21})22describe('My First Test', () => {23  it('Does not do much!', () => {24    expect(true).to.equal(true)25  })26})27import logo from './logo.svg';28import './App.css';29function App() {30  return (31        <img src={logo} className="App-logo" alt="logo" />

Using AI Code Generation

1const { defineDevServerConfig } = require('@cypress/vite-dev-server')2const { startDevServer } = require('@cypress/webpack-dev-server')3module.exports = (on, config) => {4  on('dev-server:start', (options) => {5    return startDevServer({6      viteConfig: defineDevServerConfig(config),7    })8  })9}10{11  "devServer": {12  },13}14module.exports = (on, config) => {15}16import './commands'17describe('My First Test', () => {18  it('Does not do much!', () => {19    expect(true).to.equal(true)20  })21})22describe('My First Test', () => {23  it('Does not do much!', () => {24    expect(true).to.equal(true)25  })26})27import logo from './logo.svg';28import './App.css';29function App() {30  return (31        <img src={logo} className="App-logo" alt="logo" />

Using AI Code Generation

1const { defineDevServerConfig } = require('@cypress/webpack-dev-server')2module.exports = (on, config) => {3  on('dev-server:start', (options) => {4    return defineDevServerConfig(config, {5      webpackConfig: require('../../webpack.config'),6    })7  })8}9{10  "env": {11  }12}13const path = require('path')14const HtmlWebpackPlugin = require('html-webpack-plugin')15const VueLoaderPlugin = require('vue-loader/lib/plugin')16module.exports = {17  output: {18    path: path.resolve(__dirname, 'dist'),19  },20  devServer: {21  },22  module: {23      {24      },25      {26      },27  },28    new HtmlWebpackPlugin({29    }),30    new VueLoaderPlugin(),31}32const cucumber = require('cypress-cucumber-preprocessor').default33module.exports = (on, config) => {34  on('file:preprocessor', cucumber())35}36import './commands'37import 'cypress-vue-unit-test/dist/support'38const { Given, When, Then } = require('cypress-cucumber-preprocessor/steps')39Given('I open Cypress', () => {40  cy.visit('/')41})42Then('the title is {string}', (title) => {43  cy.title().should('include', title)44})45{46  "env": {47  }48}49{

Using AI Code Generation

1const { defineDevServerConfig } = require("@cypress/vite-dev-server");2const { startDevServer } = require("@cypress/webpack-dev-server");3const viteConfig = require("./vite.config");4module.exports = (on, config) => {5  on("dev-server:start", (options) => {6    return startDevServer({7    });8  });9};10Thanks for the reply. I have removed the import statement and now I am getting the following error:11const { defineDevServerConfig } = require('@cypress/vite-dev-server')12module.exports = (on, config) => {13  on('dev-server:start', (options) => {14    return defineDevServerConfig({15      viteConfig: {16      }17    })18  })19}20{21  "devServer": {22  }23}24import { defineConfig } from 'vite'25import vue from '@vitejs/plugin-vue'26export default defineConfig({27  plugins: [vue()]28})29describe('Sample test', () => {30  it('Visits the app root url', () => {31    cy.visit('/')32    cy.contains('h1', 'Welcome to Your Vue.js + Vite App')33  })34})

Using AI Code Generation

1const { defineDevServerConfig } = require("@cypress/vite-dev-server");2cont { startDevServer } = require("@cypress/webpack-dev-server");3const viteConfig = require("./vite.config");4module.exports = (on, config) => {5  on("dev-server:start", (options) => {6    return startDevServer({7    });8  });9};

Using AI Code Generation

1const { defineDevServerConfig } = require('@cypress/webpack-dev-server')2const webpackConfig = require('@vue/cli-service/webpack.config.js')3const options = {4}5module.exports = (on, config) => {6  on('dev-server:start', (options) => {7    return defineDevServerConfig(options)8  })9}

Using AI Code Generation

1const { defineDevServerConfig } = require('@cypress/webpack-dev-server');2module.exports = (on, config) => {3  on('dev-server:start', (options) => {4    return defineDevServerConfig(config, {5      webpackOptions: require('../webpack.config'),6      watchOptions: {},7    });8  });9  return config;10};11const webpack = require('webpack');12module.exports = {13    new webpack.DefinePlugin({14      'process.env': {15        NODE_ENV: JSON.stringify('development'),16      },17    }),18};19const { startDevServer } = require('@cypress/webpack-dev-server');20on('dev-server:start', (options) => {21  return startDevServer({22    webpackConfig: require('../webpack.config'),23  });24});

Using AI Code Generation

1const { defineDevServerConfig } = require("@cypress/vite-dev-server");2const { startDevServer } = require("@cypress/webpack-dev-server");3const viteConfig = require("./vite.config");4module.exports = (on, config) => {5  on("dev-server:start", (options) => {6    return startDevServer({7    });8  });9};

Using AI Code Generation

1const { defineDevServerConfig } = require('@cypress/vite-dev-server')2const config = defineDevServerConfig({3})4module.exports = (on, config) => {5  on('dev-server:start', (options) => {6    return startDevServer({ options, viteConfig: config })7  })8}9{10  "viteConfig": {11    "resolve": {12      "alias": {13      }14    }15  }16}

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.