no-useless-constructor

Disallow unnecessary constructors.

🔒

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

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 options.

How to Use

.eslintrc.cjs

module.exports = {
  "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

• Rule source
• Test source

^{Taken with ❤️ from ESLint core.}