webpack.config.js for https://github.com/mapbox/mapbox-gl-directions

webpack.config.js

var path = require('path')

module.exports = {
    context: __dirname,
    output: {
        library: 'MapboxDirections',
        libraryTarget: 'var',
        path: path.resolve(__dirname, 'dist'),
        filename: 'mapbox-gl-directions.js'
    },
    entry: {
        app: './src/index.js'
    },
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /(node_modules|bower_components)/,
                loader: "transform-loader/cacheable?brfs",
                enforce: "post"
            },
            {
                test: /\.js$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['env']
                    }
                }
            },
            {
                test: /\.json$/,
                use: 'json-loader'
            }
        ]
    }
}