karma.conf.js

module.exports = karma =>
	karma.set({
		port: 9876,
		frameworks: ['mocha'],
		files: [
			'test/client.js',
			{ pattern: 'test/fixtures/sw.js', served: true, included: false }
		],
		proxies: {
			'/__sw.js': '/base/test/fixtures/sw.js',
			// this just needs to be a 200 response, so can send any file
			'/dummy-file.txt': '/base/test/fixtures/sw.js'
		},
		preprocessors: {
			'test/**/*.js': ['webpack']
		},
		webpack: {
			mode: 'development',
			devtool: 'inline-source-map',
			module: {
				rules: [
					{
						test: /\.js$/,
						loader: 'babel-loader',
						exclude: /node_modules/,
						query: {
							babelrc: false, // ignore any .babelrc in project & dependencies
							cacheDirectory: true,
							plugins: ['transform-runtime'],
							presets: ['env']
						}
					}
				]
			}
		},
		reporters: ['mocha']
	});