.eslintrc

{
  "extends": [
    "airbnb/base",
    "prettier"
  ],
  "overrides": [
    {
      "files": ["*.ts", "*.tsx"],
      "extends": [
        "plugin:@typescript-eslint/eslint-recommended",
        "plugin:@typescript-eslint/recommended",
        "prettier/@typescript-eslint"
      ],
      "parser": "@typescript-eslint/parser",
      "parserOptions": {
        "project": "./tsconfig.json",
        "tsconfigRootDir": "."
      },
      "plugins": ["@typescript-eslint"],
      "rules": {
        "@typescript-eslint/explicit-function-return-type": ["warn", { "allowExpressions": true }],
        "@typescript-eslint/explicit-module-boundary-types": "off",
        "@typescript-eslint/no-explicit-any": "off",
        "@typescript-eslint/no-non-null-assertion": "off",
        "@typescript-eslint/no-shadow": ["error"],
        "@typescript-eslint/no-use-before-define": ["error"],
        "no-shadow": "off",
        "no-use-before-define": "off"
      }
    },
    {
      "files": ["*.tsx"],
      "extends": [
        "airbnb/rules/react",
        "prettier/react"
      ],
      "rules": {
        "react/prop-types": "off",
        "react/no-unknown-property": ["error", { "ignore": ["class"] }],
        "react/jsx-filename-extension": ["error", { "extensions": [".tsx"] }],
        "react/react-in-jsx-scope": "off"
      },
      "settings": {
        "react": {
          "fragment": "Fragment",
          "pragma": "createElement"
        }
      }
    },
    {
      "files": ["*.spec.ts", "*.spec.tsx"],
      "rules": {
        "@typescript-eslint/explicit-function-return-type": "off",
        "@typescript-eslint/unbound-method": "off",
        "import/no-extraneous-dependencies": "off"
      }
    },
    {
      "files": ["*.d.ts"],
      "rules": {
        "import/no-extraneous-dependencies": "off"
      }
    }
  ],
  "plugins": [
    "prettier"
  ],
  "rules": {
    "class-methods-use-this": "off",
    "consistent-return": ["error", { "treatUndefinedAsUnspecified": true }],
    "import/extensions": ["error", "ignorePackages", {
      "js": "never",
      "ts": "never",
      "jsx": "never",
      "tsx": "never"
    }],
    "import/no-unresolved": ["error", { "ignore": ["mvvm\\.js"] }],
    "import/prefer-default-export": "off",
    "max-classes-per-file": "off",
    "no-continue": "off",
    "no-useless-constructor": "off",
    "no-void": "off",
    "prettier/prettier": ["warn", {
      "arrowParens": "always",
      "printWidth": 120,
      "singleQuote": true,
      "trailingComma": "all"
    }]
  },
  "settings": {
    "import/resolver": {
      "eslint-import-resolver-typescript": true,
      "node": {
        "extensions": [".ts", ".d.ts", ".tsx"]
      }
    }
  }
}