关于babel的配置问题

{
    // https://babeljs.io/docs/en/babel-plugin-transform-runtime#options
    "plugins": [
        "@babel/plugin-transform-runtime"
    ],
    // https://babeljs.io/docs/en/babel-plugin-transform-runtime#options
    "presets": [
        [
            "@babel/preset-env"
        ]
    ]
}

npm i @babel/plugin-transform-runtime @babel/preset-env @babel/runtime --save-dev

"devDependencies": {
    "@babel/plugin-transform-runtime": "^7.7.6",
    "@babel/preset-env": "^7.7.7",
    "@babel/runtime": "^7.7.7"
  },