karma-commonjs-alias

karma-commonjs-alias (karma-commonjs with module aliasing)

This is a clone of karma-commonjs with additional features

Here is a link to the original repo karma-commonjs . Go there for a full list of features.

Module aliasing

Added the ability to alias modules for testing. This is useful for mocking and specifying environment. It works the same way as file aliasing in grunt-browserify.

Here is an example karma.conf configuration

module.exports = function (config) {
	config.set({
	   ...
	   commonjsPreprocessor: {
	      alias : {
	        './config/dev.js': 'config'
	      }
	   }
	   ...
  });
}

In another file, you can specify the following and it will be resolve to ./config/dev.js

require('config');

NPM Module Support

Just add NPM modules to the files array and they will be available in the tests

module.exports = function (config) {
	config.set({
	   ...
	   files: [
	      **/*.js
	      'promise-polyfill', // NPM module used in JS files
	      'observable-lite' // Another NPM module
	   ]
	   ...
  });
}

Node/NPM Installation

npm install karma-commonjs-alias