babel.config.js

module.exports = function(api) {
  const defaultConfigFunc = require('shakapacker/package/babel/preset.js')
  const resultConfig = defaultConfigFunc(api)

  const isProductionEnv = api.env('production')
  const isDevelopmentEnv = api.env('development')

  const changesOnDefault = {
    presets: [
      [
        '@babel/preset-react',
        {
          development: !isProductionEnv,
          useBuiltIns: true
        }
      ]
    ].filter(Boolean),
    plugins: [
      // This is little help to include individual components from Semantic UI React!
      ['module-resolver', {
        root: ['app/webpacker'],
        alias: {
          'semantic-css': ([, name]) => `stylesheets/semantic/components${name}.min.css`,
        }
      }],
      !isDevelopmentEnv && [
        'babel-plugin-transform-react-remove-prop-types',
        {
          removeImport: true
        }
      ]
    ].filter(Boolean)
  }

  resultConfig.presets = [...resultConfig.presets, ...changesOnDefault.presets]
  resultConfig.plugins = [...resultConfig.plugins, ...changesOnDefault.plugins ]

  return resultConfig
}