meaninglessVoidOperators

Reports using the void operator on expressions that are already void or undefined.

✅ This rule is included in the ts logical presets.

The void operator is used to discard a return value and produce undefined. Applying void to a value that is already void or undefined is meaningless and indicates a likely mistake or unnecessary code.

This rule helps catch API changes where a function that previously returned a value no longer does, as well as ensuring that void is used consistently and intentionally.

Examples

❌ Incorrect

void (() => {})();

function getValue() {}
void getValue();

const value: undefined = undefined;
void value;

✅ Correct

function getValue() {
  return 1;
}
void getValue();

void (async () => {})();

function log(message: number) {
  void message;
  console.log(message);
}

Options

This rule is not configurable.

When Not To Use It

If you intentionally use void for stylistic consistency regardless of the argument’s type, you may disable this rule.

For codebases that heavily rely on explicit void annotations for documentation purposes, this rule might produce unwanted warnings.

Further Reading

• MDN: void operator
• TypeScript Handbook: void

Equivalents in Other Linters

• ESLint: @typescript-eslint/no-meaningless-void-operator
• Oxlint: typescript/no-meaningless-void-operator