webpack.parts.js

const TerserPlugin = require('terser-webpack-plugin');

exports.lintJS = ({ include, exclude, options }) => ({
  module: {
    rules: [
      {
        test: /\.js$/,
        include,
        exclude,
        enforce: 'pre',
        loader: 'eslint-loader',
        options,
      },
    ],
  },
});

exports.loadJS = ({ include, exclude, options } = {}) => ({
  module: {
    rules: [
      {
        test: /\.js$/,

        include,
        exclude,

        loader: 'babel-loader',
        options,
      },
    ],
  },
});

exports.minifyJS = options => ({
  optimization: {
    minimizer: [
      new TerserPlugin(options)
    ],
  },
});