.eslintrc.json

{
  "parserOptions": {
    "parser": "@babel/eslint-parser",
    "ecmaVersion": "latest",
    "sourceType": "module",
    "requireConfigFile": false
  },
  "env": {
    "browser": true,
    "es6": true
  },
  "extends": ["eslint:recommended", "prettier", "plugin:jsx-a11y/recommended", "plugin:import/errors", "plugin:react/recommended"],
  "plugins": ["jsx-a11y", "import"],
  "rules": {
    "eqeqeq": ["error", "always", { "null": "ignore" }],
    "no-var": "error",
    "prefer-const": "error",
    // React
    "react/react-in-jsx-scope": "off",
    "react/no-unescaped-entities": "off"
  },
  "settings": {
    "react": {
      "version": "detect"
    },
    "import/resolver": {
      "alias": {
        "extensions": [".js", ".jsx"],
        "map": [
          ["src", "./src"],
          ["app", "./src"]
        ]
      }
    }
  }
}