webpack.config.js

const path = require('path');
const { CleanWebpackPlugin } = require('clean-webpack-plugin')
module.exports = {
    entry: {
        index: "./src/index.js",
    },
    output: {
        library: 'GridTable',
        libraryTarget: 'umd',
        path: __dirname + '/dist',
        filename: '[name].js'
    },
    module: {
        rules: [
            {
                test: /\.(js|jsx)$/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env', '@babel/preset-react'],
                        plugins: ['@babel/plugin-proposal-object-rest-spread']
                    }
                },
                exclude: /node_modules/
            },
            {
                test: /\.css$/,
                use: ["style-loader", "css-loader"]
            }
        ]
    },
    plugins: [
        new CleanWebpackPlugin()
    ],
    resolve: {
        extensions: [".js", ".jsx"]
    },
    externals: {
        'react': 'react',
        'react-dom': 'react-dom',
        'prop-types': 'prop-types'
    }
}