.eslintrc

{
  "root": true,
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "sourceType": "module"
  },
  "ignorePatterns": "next.config.js",
  "plugins": ["functional", "@typescript-eslint"],
  "extends": [
    "prettier",
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/recommended-requiring-type-checking",
    "plugin:import/errors",
    "plugin:import/typescript",
    "plugin:eslint-comments/recommended"
  ],
  "rules": {
    "no-const-assign": "error",
    "no-param-reassign": "error",
    "prefer-const": "error",
    "no-var": "error",
    "import/no-anonymous-default-export": "error",
    "import/dynamic-import-chunkname": "error",
    "import/order": ["error", { "newlines-between": "always", "alphabetize": { "order": "asc" } }],
    "import/no-duplicates": "error",
    "import/no-cycle": "error",
    "import/no-extraneous-dependencies": [
      "error",
      {
        "devDependencies": [
          "**/*.test.tsx",
          "**/*.spec.tsx",
          "**/*.test.ts",
          "**/*.spec.ts",
          "**/cypress/**/*.*",
          "**/jest-setup.ts",
          "**/jest-utils.ts",
          "**/jest-setup.tsx",
          "**/jest-utils.tsx",
          "**/next-env.d.ts",
          "**/global.d.ts"
        ]
      }
    ],
    "functional/no-let": [
      "error",
      {
        "allowLocalMutation": true,
        "ignorePattern": "^mutable"
      }
    ],
    "functional/prefer-readonly-type": "error",
    "functional/no-this-expression": "error",
    "functional/no-loop-statement": "error",
    "require-await": "error",

    "@typescript-eslint/consistent-type-imports": ["error", { "disallowTypeAnnotations": false }],
    "@typescript-eslint/explicit-module-boundary-types": "off",
    "@typescript-eslint/no-empty-interface": "off",
    "@typescript-eslint/no-floating-promises": ["error", { "ignoreVoid": true }],
    "@typescript-eslint/prefer-optional-chain": "error",
    "@typescript-eslint/no-confusing-non-null-assertion": "error",
    "@typescript-eslint/switch-exhaustiveness-check": "error",
    "@typescript-eslint/no-unused-vars": [
      "error",
      { "argsIgnorePattern": "^_", "varsIgnorePattern": "^_", "ignoreRestSiblings": true }
    ],
    "@typescript-eslint/no-unsafe-assignment": "off",
    "@typescript-eslint/no-misused-promises": "off",
    "@typescript-eslint/no-extra-non-null-assertion": "error",
    "@typescript-eslint/no-non-null-asserted-optional-chain": "error",
    "@typescript-eslint/no-non-null-assertion": "error",
    "@typescript-eslint/no-unnecessary-type-assertion": "error",
    "@typescript-eslint/consistent-type-assertions": ["error", { "assertionStyle": "never" }],
    "@typescript-eslint/restrict-template-expressions": ["error", { "allowNullish": true }],
    "eslint-comments/require-description": ["error", { "ignore": ["eslint-enable"] }],
    "import/no-default-export": "error",
    "import/no-unresolved": "off",
    "eqeqeq": ["error", "always", { "null": "ignore" }],
    "no-unused-vars": "off"
  },
  "overrides": [
    {
      "files": ["**/*.test.*", "**/*.spec.*"],
      "env": { "jest": true },
      "rules": {
        "@typescript-eslint/no-unsafe-assignment": "off",
        "@typescript-eslint/restrict-plus-operands": "off",
        "@typescript-eslint/no-non-null-assertion": "off",
        "@typescript-eslint/consistent-type-assertions": "off",
        "@typescript-eslint/no-explicit-any": "off"
      }
    }
  ]
}