webpack.build.js

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

const config = {
    mode: 'production',

    context: `${__dirname}/src`,

    entry: {
        'tiny': './index.js',
        'tiny.mini': './mini.js',
        'tiny.base': './base.js'
    },

    output: {
        path: `${__dirname}/build/`,
        filename: `[name].js`,
        environment: {
            arrowFunction: false
        }
    },

    performance: {
        hints: false
    },

    optimization: {
        minimize: true,
        minimizer: [
            new TerserPlugin({
                include: /\.js$/,
                parallel: true,
                terserOptions: {
                    sourceMap: false,
                    compress: true,
                    ie8: false,
                    ecma: 5,
                    output: {
                        comments: false
                    },
                    warnings: false
                }
            })
        ]
    },

    plugins: [
        new Webpack.DefinePlugin({
            __DEBUG__: 'false'
        })
    ],

    stats: {
        colors: true
    }
};

module.exports = config;