.eslintrc.json

{
    "env": {
        "es2021": true,
        "node": true
    },
    "extends": [
        "eslint:recommended",
        "plugin:react/recommended"
    ],
    "parserOptions": {
        "ecmaFeatures": {
            "jsx": true
        },
        "ecmaVersion": 12,
        "sourceType": "module"
    },
    "plugins": [
        "react"
    ],
    "rules": {
        "indent": [
            "error",
            2
        ],
        "linebreak-style": [
            "error",
            "unix"
        ],
        "quotes": [
            "error",
            "double"
        ],
        "semi": [
            "error",
            "always"
        ]
    },
    "settings": {
        "react": {
          "createClass": "createReactClass", // Regex for Component Factory to use,
                                             // default to "createReactClass"
          "pragma": "React",  // Pragma to use, default to "React"
          "fragment": "Fragment",  // Fragment to use (may be a property of <pragma>), default to "Fragment"
          "version": "detect", // React version. "detect" automatically picks the version you have installed.
                               // You can also use `16.0`, `16.3`, etc, if you want to override the detected value.
                               // default to latest and warns if missing
                               // It will default to "detect" in the future
          "flowVersion": "0.53" // Flow version
        }}
}