eslint报错：JSX not allowed in files with extension '.tsx'

一、问题

JSX not allowed in files with extension '.tsx' react/jsx-filename-extension

二、解决

// .eslintrc.js
rules: {
    "react/jsx-filename-extension": [  
        "error",  
        {    
        "extensions": [".js", ".jsx", ".tsx", ".ts"]  
        }
    ]
}