.eslintrc.json

{
  "env": {
    "node": true
  },
  "extends": ["airbnb-base", "prettier"],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": "./tsconfig.lint.json"
  },
  "plugins": ["@typescript-eslint"],
  "rules": {
    "import/extensions": [
      "error",
      "ignorePackages",
      {
        "js": "never",
        "ts": "never"
      }
    ],
    "import/no-extraneous-dependencies": [
      "error",
      { "peerDependencies": true }
    ],
    "import/prefer-default-export": "off",
    "no-duplicate-imports": "off",
    "no-restricted-syntax": "off",
    "no-unused-vars": "off"
  },
  "settings": {
    "import/resolver": {
      "node": {
        "extensions": [".js", ".ts"]
      }
    }
  },
  "overrides": [
    {
      "files": ["**/*.test.**"],
      "env": {
        "mocha": true
      },
      "rules": {
        "no-unused-expressions": "off"
      }
    }
  ]
}