const plugins = [
  '@babel/plugin-syntax-dynamic-import',
  '@babel/plugin-transform-runtime'
]
if (process.env.NODE_ENV === 'production') {
  plugins.push('transform-remove-console')
}

module.exports = {
  presets: [
    '@vue/cli-plugin-babel/preset',
    ['@babel/preset-env', {
      useBuiltIns: 'usage', // 按需引入polyfill
      corejs: 3, // 指定core-js版本
      targets: {
        ie: '11' // 目标环境
      }
    }]
  ],
  plugins
}