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no-useless-constructor

Disallow unnecessary constructors.

🔒

Extending "plugin:@typescript-eslint/strict" in an ESLint configuration enables this rule.

💡

Some problems reported by this rule are manually fixable by editor suggestions.

This rule extends the base eslint/no-useless-constructor rule. It adds support for:

  • constructors marked as protected / private (i.e. marking a constructor as non-public),
  • public constructors when there is no superclass,
  • constructors with only parameter properties.

Caveat​

This lint rule will report on constructors whose sole purpose is to change visibility of a parent constructor. See discussion on this rule's lack of type information for context.

Options​

See eslint/no-useless-constructor's options.

How to Use​

eslint.config.mjs
export default tseslint.config({
  rules: {
    // Note: you must disable the base rule as it can report incorrect errors
    "no-useless-constructor": "off",
    "@typescript-eslint/no-useless-constructor": "error"
  }
});

Try this rule in the playground ↗

Resources​

Taken with ❤️ from ESLint core.