.eslintrc.json

{
    "parser": "babel-eslint",
    "env": {
        "browser": true,
        "es6": true
    },
    "extends": [
        "eslint:recommended",
        "plugin:react/recommended"
    ],
    "globals": {
        "Atomics": "readonly",
        "SharedArrayBuffer": "readonly",
        "process": true
    },
    "parserOptions": {
        "ecmaFeatures": {
            "jsx": true
        },
        "ecmaVersion": 2018,
        "sourceType": "module"
    },
    "plugins": [
        "react"
    ],
    "rules": {
        "strict": ["error", "global"],
        "quotes": ["error", "double"],
        "semi": "error",
        "indent": ["error", 4, { "SwitchCase": 1 }],
        "prefer-const": "error",
        "no-unused-vars": ["error", { "vars": "all", "args": "after-used" }],
        "no-undefined": "error",
        "no-undef": "error",
        "eqeqeq": "error",
        "no-var": "error",
        "max-depth": ["warn", 3],
        "max-nested-callbacks": ["warn", 3],
        "no-console": "off",
        "react/prop-types": 0
    }
}