.eslintrc.json

{
  "extends": [],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "tsconfigRootDir": ".",
    "project": [
      "shared/tsconfig.json",
      "frontend/tsconfig.json",
      "backend/tsconfig.json",
      "data/tsconfig.json"
    ]
  },
  "overrides": [
    // we disable these rules until https://github.com/typescript-eslint/typescript-eslint/issues/6314 is fixed
    {
      "files": [
        "*/src/**/*.ts"
      ],
      "rules": {
        "@typescript-eslint/no-unsafe-assignment": "off",
        "@typescript-eslint/no-unsafe-member-access": "off",
        "@typescript-eslint/no-unsafe-argument": "off",
        "@typescript-eslint/no-unsafe-call": "off",
        "@typescript-eslint/no-unsafe-return": "off"
      }
    },
    {
      "files": [
        "**/*.tsx"
      ],
      // these rules aren't really working with tsx, seems like a eslint bug
      "rules": {
        "@typescript-eslint/no-unsafe-assignment": "off",
        "@typescript-eslint/no-unsafe-member-access": "off",
        "@typescript-eslint/no-unsafe-argument": "off",
        "@typescript-eslint/no-unsafe-call": "off",
        "@typescript-eslint/no-unsafe-return": "off"
      }
    },
    {
      "files": ["**/*.tsx"],
      "rules": {
        "@typescript-eslint/explicit-function-return-type": "off"
      }
    }
  ],
  "ignorePatterns": [
    "**/*.cjs",
    "**/*.config.ts",
    "**/*.esm",
    "**/*.js",
    "**/*.test.ts"
  ],
  "plugins": [
    "@typescript-eslint"
  ],
  "root": true,
  "rules": {
    "eqeqeq": "error",
    "use-isnan": "error",
    "valid-typeof": "error",
    "no-invalid-regexp": "error",
    "no-dupe-else-if": "error",
    "no-duplicate-case": "error",
    "no-new-symbol": "error",
    "no-unreachable": "error",
    "no-debugger": "warn",
    "require-atomic-updates": "warn",
    "no-console": [
      "error",
      {
        "allow": [
          "error"
        ]
      }
    ],
    "@typescript-eslint/array-type": "error",
    "@typescript-eslint/await-thenable": "error",
    "@typescript-eslint/no-unused-vars": "warn",
    "@typescript-eslint/dot-notation": "error",
    "@typescript-eslint/ban-types": "error",
    "@typescript-eslint/consistent-type-imports": "error",
    "@typescript-eslint/consistent-type-exports": "error",
    "@typescript-eslint/no-array-constructor": "error",
    "@typescript-eslint/no-for-in-array": "error",
    "@typescript-eslint/no-implied-eval": "error",
    "@typescript-eslint/no-invalid-this": "error",
    "@typescript-eslint/no-invalid-void-type": "error",
    "@typescript-eslint/no-meaningless-void-operator": "error",
    "@typescript-eslint/no-misused-new": "error",
    "@typescript-eslint/no-misused-promises": "error",
    "@typescript-eslint/no-throw-literal": "error",
    "@typescript-eslint/no-unnecessary-condition": "error",
    "@typescript-eslint/prefer-as-const": "error",
    "@typescript-eslint/prefer-enum-initializers": "error",
    "@typescript-eslint/prefer-nullish-coalescing": "error",
    "@typescript-eslint/return-await": "error",
    // because we need to deal with API gateways, we inevitably
    // will run into any, especially after any JSON.parse() call.
    // so we only warn about it instead of throwing errors
    "@typescript-eslint/no-unsafe-argument": "warn",
    "@typescript-eslint/no-unsafe-assignment": "warn",
    "@typescript-eslint/no-unsafe-call": "warn",
    "@typescript-eslint/no-unsafe-member-access": "warn",
    "@typescript-eslint/no-unsafe-return": "warn",
    "@typescript-eslint/no-loop-func": "warn",
    "@typescript-eslint/prefer-for-of": "warn",
    "@typescript-eslint/restrict-plus-operands": "warn",
    "@typescript-eslint/prefer-function-type": "warn",
    "@typescript-eslint/prefer-includes": "warn",
    "@typescript-eslint/prefer-readonly": "warn",
    "@typescript-eslint/require-array-sort-compare": "warn",
    "@typescript-eslint/no-floating-promises": [
      "warn",
      {
        "ignoreIIFE": true
      }
    ],
    "@typescript-eslint/no-confusing-non-null-assertion": "warn",
    "@typescript-eslint/consistent-type-assertions": [
      "error",
      {
        "assertionStyle": "as"
      }
    ],
    "@typescript-eslint/explicit-function-return-type": [
      "error",
      {
        "allowExpressions": true,
        "allowIIFEs": true
      }
    ]
  }
}