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karma-webpack

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karma-webpack

Use webpack with karma

  • 5.0.1
  • latest
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
358K
decreased by-11.87%
Maintainers
3
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Created

What is karma-webpack?

karma-webpack is a plugin that allows you to use Webpack to preprocess files in Karma. It enables you to bundle your test files using Webpack, which is particularly useful for projects that already use Webpack for their build process. This integration helps in leveraging Webpack's features like module bundling, code splitting, and asset management in your test environment.

What are karma-webpack's main functionalities?

Preprocessing Files

This feature allows you to preprocess your test files using Webpack. By specifying the files and preprocessors in the Karma configuration, you can bundle your test files with Webpack before running them in the browser.

module.exports = function(config) {
  config.set({
    frameworks: ['mocha'],
    files: [
      'test/**/*.spec.js'
    ],
    preprocessors: {
      'test/**/*.spec.js': ['webpack']
    },
    webpack: {
      // Webpack configuration
    },
    browsers: ['Chrome'],
    singleRun: true
  });
};

Using Webpack Loaders

This feature allows you to use Webpack loaders in your test environment. For example, you can use Babel to transpile your ES6 code to ES5 before running your tests.

module.exports = function(config) {
  config.set({
    frameworks: ['jasmine'],
    files: [
      'test/**/*.spec.js'
    ],
    preprocessors: {
      'test/**/*.spec.js': ['webpack']
    },
    webpack: {
      module: {
        rules: [
          {
            test: /\.js$/,
            exclude: /node_modules/,
            use: 'babel-loader'
          }
        ]
      }
    },
    browsers: ['Firefox'],
    singleRun: true
  });
};

Source Maps

This feature allows you to generate source maps for your test files. Source maps help in debugging by mapping the transpiled code back to the original source code.

module.exports = function(config) {
  config.set({
    frameworks: ['mocha'],
    files: [
      'test/**/*.spec.js'
    ],
    preprocessors: {
      'test/**/*.spec.js': ['webpack']
    },
    webpack: {
      devtool: 'inline-source-map'
    },
    browsers: ['Chrome'],
    singleRun: true
  });
};

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Package last updated on 01 Feb 2024

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