webpack.config.js

module.exports = {
    entry: "./src/index.js",
    output: {
        path: __dirname + "/lib",
        filename: "index.js",
    },
    preLoaders: [{
        test: /\.js$/,
        loader: 'babel',
        query: {
            "presets": ["es2015", "stage-0"],
            "plugins": ["transform-runtime", "transform-regenerator", "syntax-async-functions", "transform-async-to-generator"]
        }
    }],
};