webpack.config.js

/*******************************************************************************
 *
 *    Copyright 2019 Adobe. All rights reserved.
 *    This file is licensed to you under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License. You may obtain a copy
 *    of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software distributed under
 *    the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
 *    OF ANY KIND, either express or implied. See the License for the specific language
 *    governing permissions and limitations under the License.
 *
 ******************************************************************************/
const path = require('path');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const pkg = require('./package.json');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

const libraryName = pkg.name;

module.exports = {
    entry: path.resolve(__dirname, 'src') + '/index.js',
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'index.js',
        libraryTarget: 'umd',
        library: libraryName,
        umdNamedDefine: true,
        publicPath: '/dist/'
    },

    module: {
        rules: [
            {
                test: /\.graphql$/,
                exclude: /node_modules/,
                use: [
                    {
                        loader: 'graphql-tag/loader'
                    }
                ]
            },
            {
                test: /\.js$/,
                exclude: /(node_modules|dist)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-react']
                    }
                }
            },
            {
                test: /\.css/,
                use: [
                    MiniCssExtractPlugin.loader,
                    {
                        loader: 'css-loader',
                        options: {
                            modules: {
                                localIdentName: 'cmp-[folder]__[name]__[local]'
                            }
                        }
                    }
                ]
            },
            {
                test: /\.svg$/,
                use: [
                    {
                        loader: 'file-loader',
                        options: {
                            outputPath: 'resources',
                            name: '[name].[ext]'
                        }
                    }
                ]
            }
        ]
    },
    plugins: [
        new CleanWebpackPlugin(),
        new MiniCssExtractPlugin({
            filename: '[name].css',
            chunkFilename: '[id].css'
        })
    ],
    devtool: 'source-map',
    mode: 'development',
    resolve: {
        alias: {
            react: path.resolve(__dirname, './node_modules/react'),
            'react-dom': path.resolve(__dirname, './node_modules/react-dom'),
            'react-i18next': path.resolve(__dirname, './node_modules/react-i18next')
        }
    },
    externals: {
        react: {
            root: 'React',
            commonjs2: 'react',
            commonjs: 'react',
            amd: 'react'
        },
        'react-dom': {
            root: 'ReactDOM',
            commonjs2: 'react-dom',
            commonjs: 'react-dom',
            amd: 'react-dom'
        },
        'react-i18next': {
            root: 'reactI18next',
            commonjs2: 'react-i18next',
            commonjs: 'react-i18next',
            amd: 'react-i18next'
        }
    }
};