text: const webpack = require('webpack');
  const getWebpackConfig = require('ocular-dev-tools/config/webpack.config');
  
  const BABEL_CONFIG = {
    presets: ['@babel/env', '@babel/react'],
    plugins: ['version-inline', '@babel/proposal-class-properties']
  };
  
  module.exports = env => {
    const config = getWebpackConfig(env);
  
    config.module.rules.push({
      // This is required to handle inline worker!
      test: /\.js$/,
      exclude: /node_modules/,
      use: [
        {
          loader: 'babel-loader',
          options: BABEL_CONFIG
        }
      ]
    });
  
    config.plugins = (config.plugins || []).concat([
      new webpack.DefinePlugin({
        __MAPBOX_TOKEN__: JSON.stringify(process.env.MaplibreAccessToken) // eslint-disable-line
      })
    ]);
  
    if (env.mode === 'size') {
      // Only measure self bundle size
      config.externals = ['maplibre-gl'];
    }
  
    return config;
  };
  