const ESLintPlugin = require('eslint-webpack-plugin')
const TerserPlugin = require('terser-webpack-plugin')

module.exports = () => {
  const node_env = process.env.NODE_ENV ? process.env.NODE_ENV : 'development'
  const dev = node_env !== 'production'
  const config = {
    mode: node_env,
    devtool: dev ? 'cheap-module-source-map' : false,
    entry: {
      'bridge': [
        __dirname + '/index.js'
      ]
    },
    target: 'node',
    output: {
      path: __dirname + '/../public',
      filename: '[name].js'
    },
    module: {
      rules: [{
        test: /\.js$/,
        exclude: [
          /node_modules/
        ],
        loader: 'babel-loader'
      }, {
        test: /\.(png|jpe?g|gif|svg)$/i,
        type: 'asset/resource'
      }]
    },
    plugins: [
    ],
    resolve: {
      symlinks: false,
      extensions: ['.js']
    }
  }
  if (dev) {
    config.plugins.push(
      new ESLintPlugin({
        files: __dirname + '/src',
        lintDirtyModulesOnly: true,
        failOnWarning: false,
        failOnError: true,
        fix: false
      }))
    config.devServer = {
      hot: true,
      historyApiFallback: true,
      client: {
        overlay: {
          runtimeErrors: true
        }
      }
    }
  }
  config.optimization = {
    minimize: !dev,
    minimizer: [
      new TerserPlugin({
        minify: TerserPlugin.swcMinify,
        // `terserOptions` options will be passed to `swc` (`@swc/core`)
        // Link to options - https://swc.rs/docs/config-js-minify
        terserOptions: {},
      }),
    ]
  }
  return config
}