.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true,
    "jest/globals": true
  },
  "extends": [
    "airbnb",
    "plugin:@typescript-eslint/recommended",
    "plugin:import/typescript",
    "plugin:jest/all",
    "plugin:react/recommended",
    "plugin:prettier/recommended"
  ],
  "globals": {
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly"
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "plugins": ["@typescript-eslint", "react", "jest"],
  "rules": {
    "react/jsx-filename-extension": [
      1,
      {
        "extensions": [".tsx"]
      }
    ],
    "react/prop-types": "off",
    "jest/lowercase-name": [
      "error",
      {
        "ignore": ["describe"]
      }
    ],
    "import/extensions": [
      "error",
      "ignorePackages",
      {
        "js": "never",
        "jsx": "never",
        "ts": "never",
        "tsx": "never"
      }
    ],
    "no-param-reassign": [
      "error",
      { "props": true, "ignorePropertyModificationsForRegex": ["^draft"] }
    ]
  },
  "overrides": [
    {
      "files": ["*.test.*", "**/test-support/**"],
      "rules": {
        "import/no-extraneous-dependencies": [
          "error",
          {
            "devDependencies": true
          }
        ]
      }
    }
  ]
}