no-unnecessary-qualifier

Disallow unnecessary namespace qualifiers.

🔧

Some problems reported by this rule are automatically fixable by the --fix ESLint command line option.

💭

This rule requires type information to run.

Members of TypeScript enums and namespaces are generally retrieved as qualified property lookups: e.g. Enum.member. However, when accessed within their parent enum or namespace, the qualifier is unnecessary: e.g. just member instead of Enum.member. This rule reports when an enum or namespace qualifier is unnecessary.

.eslintrc.cjs
module.exports = {
  "rules": {
    "@typescript-eslint/no-unnecessary-qualifier": "error"
  }
};

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Examples

❌ Incorrect
✅ Correct

enum A {
  B,
  C = A.B,
}

namespace A {
  export type B = number;
  const x: A.B = 3;
}

enum A {
  B,
  C = B,
}

namespace A {
  export type B = number;
  const x: B = 3;
}

This rule is not configurable.

Options

When Not To Use It

If you don't care about having unneeded enum or namespace qualifiers, then you don't need to use this rule.

Examples​

Options​

When Not To Use It​

Resources​

Examples

Options

When Not To Use It

Resources