.eslintrc

{
  "env": {
    "browser": true,
    "commonjs": true,
    "es6": true,
    "node": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended",
    "@squiz",
    "plugin:import/typescript"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "sourceType": "module",
    "allowImportExportEverywhere": true
  },
  "plugins": ["@typescript-eslint", "prettier"],
  "settings": {
    "import/parsers": {
      "@typescript-eslint/parser": [".js", ".jsx", ".ts", ".tsx"]
    },
    "import/resolver": {
      "node": {
        "extensions": [".js", ".jsx", ".ts", ".tsx"]
      },
      "typescript": {
        "alwaysTryTypes": true
      }
    }
  },
  "rules": {
    "consistent-return": ["off"],
    "constructor-super": "warn",
    "curly": ["error", "all"],
    "guard-for-in": ["error"],
    "no-console": ["warn"],
    "no-const-assign": "warn",
    "no-empty-pattern": ["off"],
    "no-this-before-super": "warn",
    "no-undef": "off",
    "no-underscore-dangle": ["off"],
    "no-unreachable": "warn",
    "no-unused-vars": ["off"],
    "prettier/prettier": ["error"],
    "quotes": ["error", "single", { "allowTemplateLiterals": true }],
    "sort-keys": ["error", "asc", { "caseSensitive": false, "natural": true }],
    "valid-typeof": "warn",
    "@typescript-eslint/array-type": [
      "error",
      {
        "default": "generic",
        "readonly": "generic"
      }
    ],
    "@typescript-eslint/ban-types": ["off"],
    "@typescript-eslint/explicit-function-return-type": ["error"],
    "@typescript-eslint/explicit-member-accessibility": ["off"],
    "@typescript-eslint/no-empty-interface": ["off"],
    "@typescript-eslint/no-parameter-properties": ["error"],
    "@typescript-eslint/no-unused-vars": [
      "error",
      {
        "args": "none",
        "ignoreRestSiblings": true
      }
    ],
    "@typescript-eslint/no-use-before-define": ["off"]
  },
  "overrides": [
    {
      "files": ["**/*.json", "*.json"],
      "rules": {
        "header/header": ["off"]
      }
    },
    {
      "files": ["*.spec.ts", "*.spec.tsx"],
      "rules": {
        "max-len": ["off"],
        "@typescript-eslint/ban-ts-ignore": ["off"],
        "@typescript-eslint/no-unused-vars": ["off"]
      }
    }
  ]
}