create-react-app 常见错误

Eslint错误

npm run eject使配置文件暴露此时，产生了错误
Using babel-preset-react-app requires that you specify NODE_ENV or BABEL_ENV environment variables. Valid values are “development”, “test”, and “production”. Instead, received: undefined.

eslintrc.json

添加.eslintrc.json，推荐使用此方法对eslint进行详细配置

{
  "parserOptions": {
        "ecmaVersion": 7,
        "sourceType": "module",
        "babelOptions": {
            "presets": [
                ["babel-preset-react-app", false],
                "babel-preset-react-app/prod"
            ]
        }
    }
}

Babel error immediately on eject https://github.com/facebook/create-react-app/issues/12070
parserOptions 解析器配置 & env 代码运行环境
https://blog.csdn.net/m0_52761633/article/details/123760575