Sandbox::https://github.com/codecombat/codecombat/blob/master/webpack.karma.config.js

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// Use this webpack config for Karma testing, with `webpack --config webpack.karma.config.js`

// This config is automatically selected depending on process.env in webpack.config.js

// process.traceDeprecation = true;

const webpack = require('webpack');

const _ = require('lodash');

const baseConfigFn = require('./webpack.base.config')

// Development webpack config

module.exports = (env) => {

if (!env) env = {};

const baseConfig = baseConfigFn(env);

return _.merge(_.assign(baseConfig, {

// Only use this one entry point for karma testing

entry: {

test: './app/assets/javascripts/run-tests.js'

}

}), {

output: _.merge({}, baseConfig.output, {

chunkFilename: 'javascripts/chunks/[name].bundle.js',

}),

plugins: [

new webpack.DefinePlugin({

DEF_CHINA_INFRA: process.env.COCO_CHINA_INFRASTRUCTURE ? 'true' : 'false',

})

mode: 'development'

// TODO: Get sourcemaps working with Karma

// devtool: 'source-map', // https://webpack.js.org/configuration/devtool/

})

}