webpack.config.js

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

module.exports = (env) => {
    return {
        mode: env.mode,
        target: 'web',
        entry: './src/Particle.js',
        devtool: 'source-map',
        output: {
            filename: `particle${env.mode === 'production' ? '.min' : ''}.js`,
            path: path.resolve(__dirname, 'dist'),
            clean: true,
            library: {
                name: 'Particle',
                type: 'var'
            }
        },
        optimization: {
            minimize: env.mode === 'production',
            minimizer: [new TerserPlugin({
                extractComments: false,
                terserOptions: {
                    format: {
                        comments: false
                    }
                }
            })]
        },
        resolve: {
            fallback: {
                buffer: require.resolve('buffer'),
                events: require.resolve('events'),
                url: require.resolve('url')
            }
        },
        plugins: [
            new webpack.ProvidePlugin({
                Buffer: ['buffer', 'Buffer'],
                process: 'process/browser',
            })
        ]
    };
};