webpack.config.js

let Encore = require('@symfony/webpack-encore');

if (!Encore.isRuntimeEnvironmentConfigured()) {
  Encore.configureRuntimeEnvironment(process.env.NODE_ENV || 'dev');
}

Encore
  .setOutputPath('public/build/front/')
  .setPublicPath('/build/front')
  .copyFiles({
    from: './assets/front/images',
    to: 'images/[path][name].[ext]'
  })
  /*
   * ENTRY CONFIG
   *
   * Add 1 entry for each "page" of your app
   * (including one that's included on every page - e.g. "app")
   *
   * Each entry will result in one JavaScript file (e.g. app.js)
   * and one CSS file (e.g. app.css) if your JavaScript imports CSS.
   */
  .addEntry('app', './assets/front/app.js')

  // will require an extra script tag for runtime.js
  // but, you probably want this, unless you're building a single-page app
  .enableSingleRuntimeChunk()

  /*
   * FEATURE CONFIG
   *
   * Enable & configure other features below. For a full
   * list of features, see:
   * https://symfony.com/doc/current/frontend.html#adding-more-features
   */
  .cleanupOutputBeforeBuild()
  .enableBuildNotifications()
  .enableSourceMaps(!Encore.isProduction())

  // enables @babel/preset-env polyfills
  //.configureBabelPresetEnv((config) => {
  //  config.useBuiltIns = 'usage';
  //  config.corejs = 3;
  //})

  // enables Sass/SCSS support
  .enableSassLoader()

  // enable PostCss support
  .enablePostCssLoader()
;

const frontConfig = Encore.getWebpackConfig();
Encore.reset();

module.exports = [frontConfig];