webpack.config.js

// webpack.config.js
var Encore = require('@symfony/webpack-encore');
const CopyWebpackPlugin = require('copy-webpack-plugin');
Encore
    // directory where all compiled assets will be stored
    .setOutputPath('public/build')

    // what's the public path to this directory (relative to your project's document root dir)
    .setPublicPath('/build')

    // When enabled, Webpack "splits" your files into smaller pieces for greater optimization.
    .splitEntryChunks()
    // will require an extra script tag for runtime.js
    // but, you probably want this, unless you're building a single-page app
    //.enableSingleRuntimeChunk()
    .disableSingleRuntimeChunk()
    .addEntry('app', './assets/js/app.js')
    .addEntry('frontend', './assets/js/frontend.js')

    // empty the outputPath dir before each build
    .cleanupOutputBeforeBuild()
    .addPlugin(
        new CopyWebpackPlugin({
            patterns: [
                {
                    from: './node_modules/mdbootstrap/js/mdb.min.js',
                    to: 'js/mdb.min.js'
                },
                {
                    from: './node_modules/mdbootstrap/js/mdb.min.js.map',
                    to: 'js/mdb.min.js.map'
                },
                {
                    from: './node_modules/mdbootstrap/js/jquery.min.js',
                    to: 'js/jquery.min.js'
                },
                {
                    from: './node_modules/mdbootstrap/js/bootstrap.min.js',
                    to: 'js/bootstrap.min.js'
                },
                {
                    from: './node_modules/mdbootstrap/js/popper.min.js',
                    to: 'js/popper.min.js'
                },
                {
                    from: './node_modules/vis-network/standalone/umd/vis-network.min.js',
                    to: 'js/vis-network.min.js'
                }


            ]
        })
    )

    // will output as web/build/app.js
    //.addEntry('app', ['./src/public/app.js','./src/public/main.scss'])

    // .createSharedEntry('vendor', './src/public/app.js')


    // allow sass/scss files to be processed
    //.enableSassLoader()

    // allow legacy applications to use $/jQuery as a global variable
    .autoProvidejQuery()
    .enableSourceMaps(!Encore.isProduction())
    .enableVersioning(Encore.isProduction())
// create hashed filenames (e.g. app.abc123.css)
//.enableVersioning()

;

// export the final configuration
module.exports = Encore.getWebpackConfig();