.eslintrc.json

{
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2020,
    "sourceType": "module",
    "project": "./tsconfig.json"
  },
  "plugins": ["@typescript-eslint", "no-only-tests", "import"],
  "rules": {
    "no-only-tests/no-only-tests": "error",
    "import/extensions": ["error", "always"],
    "@typescript-eslint/explicit-module-boundary-types": "off",
    "@typescript-eslint/no-explicit-any": "error",
    "@typescript-eslint/no-non-null-assertion": "off",
    "@typescript-eslint/no-floating-promises": "error"
  },
  "overrides": [
    {
      "files": ["src/playground-styles.ts"],
      "rules": {
        "no-var": "off"
      }
    },
    {
      "files": [
        "src/typescript-worker/**",
        "src/playground-typescript-worker-entrypoint.ts"
      ],
      "parserOptions": {
        "project": "./tsconfig-typescript-worker.json"
      }
    },
    {
      "files": ["src/service-worker/**"],
      "parserOptions": {
        "project": "./src/service-worker/tsconfig.json"
      }
    },
    {
      "files": ["src/shared/**"],
      "parserOptions": {
        "project": "./src/shared/tsconfig.json"
      }
    },
    {
      // These files aren't imported into Google so we don't care about floating
      // promises.
      "files": [
        "scripts/**",
        "playwright.config.ts",
        "src/configurator/**",
        "src/test/**"
      ],
      "parserOptions": {
        "project": null
      },
      "rules": {
        "@typescript-eslint/no-floating-promises": "off"
      }
    }
  ]
}