webpack.config.js

/**
 * @file webpack.config.js
 * @author Amit Agarwal
 * @email amit@labnol.org
 *
 * Google Apps Script Starter Kit
 * https://github.com/labnol/apps-script-starter
 */

const path = require('path');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
// const GasPlugin = require('gas-webpack-plugin');
const UglifyJSPlugin = require('uglifyjs-webpack-plugin');
const { version } = require('./package.json');

const src = path.resolve(__dirname, 'src');
const destination = path.resolve(__dirname, 'dist');
const isProduction = process.env.NODE_ENV === 'production';
const isWatched = process.env.NODE_ENV === 'watch';

module.exports = {
    mode: isProduction ? 'production' : 'none',
    context: __dirname,
    entry: `${src}/main.ts`,
    watch: isWatched,
    watchOptions: {
        ignored: /node_modules/
    },
    output: {
        filename: `code-${version}.js`,
        path: destination,
        libraryTarget: 'this'
    },
    resolve: {
        extensions: ['.js']
    },
    optimization: {
        minimizer: [
            new UglifyJSPlugin({
                uglifyOptions: {
                    ie8: true,
                    warnings: false,
                    mangle: false,
                    compress: {
                        properties: false,
                        drop_console: false,
                        drop_debugger: isProduction
                    },
                    output: {
                        beautify: !isProduction
                    }
                }
            })
        ]
    },
    module: {
        rules: [
            {
                test: /\.tsx?$/,
                use: "ts-loader",
                exclude: /node_modules/,
            },
            {
                enforce: 'pre',
                test: /\.js$/,
                exclude: [/node_modules/],
                loader: 'eslint-loader',
                options: {
                    cache: true,
                    failOnError: false,
                    fix: true
                }
            },
            {
                test: /\.js$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader'
                }
            }
        ]
    },
    resolve: {
        extensions: [".tsx", ".ts", ".js"],
    },
    plugins: [
        new CleanWebpackPlugin(),
        new CopyWebpackPlugin([
            {
                from: `${src}/../appsscript.json`,
                to: destination
            },
            {
                from: `${src}/testFunctions.js`,
                to: destination
            }
        ]),
    ]
};