const productionPlugins = []
// 插件未安装时不阻断构建（需先 npm install）
try {
  require.resolve('babel-plugin-transform-remove-console')
  productionPlugins.push(['transform-remove-console', { exclude: ['error'] }])
} catch (e) {
  // babel-plugin-transform-remove-console 未安装，跳过
}

module.exports = {
  presets: [
    // https://github.com/vuejs/vue-cli/tree/master/packages/@vue/babel-preset-app
    '@vue/cli-plugin-babel/preset'
  ],
  'env': {
    'development': {
      // babel-plugin-dynamic-import-node plugin only does one thing by converting all import() to require().
      // This plugin can significantly increase the speed of hot updates, when you have a large number of pages.
      'plugins': ['dynamic-import-node']
    },
    // M12: 生产环境移除 console（保留 error）
    'production': {
      'plugins': productionPlugins
    }
  }
}