.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true
  },
  "extends": [
    "plugin:react/recommended",
    "airbnb",
    "plugin:jest/recommended"
  ],
  "globals": {
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly"
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "plugins": [
    "react",
    "@typescript-eslint",
    "jest"
  ],
  "rules": {
    "react/prop-types": "off",
    "import/no-extraneous-dependencies": "off",
    "react/jsx-filename-extension": [
      "error",
      {
        "extensions": [
          ".jsx",
          ".tsx"
        ]
      }
    ],
    "array-bracket-spacing": [
      "error",
      "never"
    ],
    "brace-style": [
      "error",
      "stroustrup"
    ],
    "comma-dangle": [
      "error",
      {
        "arrays": "always-multiline",
        "objects": "always-multiline",
        "imports": "never",
        "exports": "never",
        "functions": "never"
      }
    ],
    "comma-spacing": [
      "error",
      {
        "before": false,
        "after": true
      }
    ],
    "comma-style": [
      "error",
      "last"
    ],
    "func-call-spacing": [
      "error",
      "never"
    ],
    "indent": [
      "error",
      2,
      {
        "VariableDeclarator": {
          "var": 2,
          "let": 2,
          "const": 3
        }
      }
    ],
    "key-spacing": [
      "error"
    ],
    "object-curly-spacing": [
      "error",
      "always"
    ],
    "quotes": [
      "error",
      "single"
    ],
    "no-underscore-dangle": "off",
    "no-param-reassign": "off",
    "no-shadow": "off",
    "no-plusplus": "off",
    "consistent-return": "off",
    "no-continue": "off",
    "class-methods-use-this": "off"
  },
  "overrides": [
    {
      "files": [
        "*.test.js"
      ],
      "env": {
        "jest/globals": true
      },
      "rules": {
        "no-restricted-syntax": "off",
        "no-await-in-loop": "off"
      }
    },
    {
      "files": [
        "*.d.ts"
      ],
      "rules": {
        "no-var": "off",
        "import/no-mutable-exports": "off"
      }
    }
  ]
}