Contents

module.exports = function(api) {
  const validEnv = ['development', 'test', 'production']
  const currentEnv = process.env.NODE_ENV
  const isDevelopmentEnv = (currentEnv === "development")
  const isProductionEnv = (currentEnv === 'production')
  const isTestEnv = (currentEnv === 'test')

  if (!validEnv.includes(currentEnv)) {
    throw new Error(
      'Please specify a valid `NODE_ENV` or ' +
        '`BABEL_ENV` environment variables. Valid values are "development", ' +
        '"test", and "production". Instead, received: ' +
        JSON.stringify(currentEnv) +
        '.'
    )
  }

  // Cached based on the value of some function. If this function returns a value different from
  // a previously-encountered value, the plugins will re-evaluate.
  api.cache(() => currentEnv);

  return {
    presets: [
      isTestEnv && [
        '@babel/preset-env',
        {
          targets: {
            node: 'current'
          }
        }
      ],
      (isProductionEnv || isDevelopmentEnv) && [
        '@babel/preset-env',
        {
          forceAllTransforms: true,
          useBuiltIns: 'entry',
          corejs: 3,
          modules: false,
          exclude: ['transform-typeof-symbol']
        }
      ]
    ].filter(Boolean),
    plugins: [
      'babel-plugin-macros',
      '@babel/plugin-syntax-dynamic-import',
      isTestEnv && 'babel-plugin-dynamic-import-node',
      '@babel/plugin-transform-destructuring',
      [
        '@babel/plugin-proposal-class-properties',
        {
          loose: true
        }
      ],
      [
        '@babel/plugin-proposal-object-rest-spread',
        {
          useBuiltIns: true
        }
      ],
      [
        '@babel/plugin-transform-runtime',
        {
          helpers: false,
          regenerator: true,
          corejs: false
        }
      ],
      [
        '@babel/plugin-transform-regenerator',
        {
          async: false
        }
      ]
    ].filter(Boolean)
  }
}

Version data entries

2 entries across 2 versions & 2 rubygems

Version	Path
vite_rb-0.0.1.alpha1	examples/rails-without-webpack/config/snowpacker/babel.config.js
snowpacker-0.0.4.alpha1	lib/snowpacker/templates/babel.config.js