noop

No-op function that performs no operation. Commonly used as a default callback function or placeholder.

API

noop

Return

Argument	Description	Type
void	No return value	void

Parameters

No parameters

Example

Basic Usage

import { noop } from 'ranuts';

// As default callback
const callback = noop;
callback(); // Performs no operation

As Default Parameter

import { noop } from 'ranuts';

function processData(data, onSuccess = noop, onError = noop) {
  try {
    // Process data
    onSuccess(data);
  } catch (error) {
    onError(error);
  }
}

// Only provide success callback
processData({ id: 1 }, (data) => {
  console.log('Success:', data);
});

// Provide no callbacks
processData({ id: 2 }); // Won't throw error

Conditional Callback

import { noop } from 'ranuts';

const handleClick = isEnabled
  ? () => {
      console.log('Execute action');
    }
  : noop;

button.addEventListener('click', handleClick);

Event Listener Placeholder

import { noop } from 'ranuts';

const unsubscribe = someService.subscribe(noop); // Temporarily not handling events

Notes

1. Performance: Empty function calls have minimal overhead, suitable as default values.
2. Type safety: In TypeScript, noop has the type () => void, which can be safely used anywhere a function is required.
3. Readability: Using noop is more explicit than () => {} in expressing the intent of "performing no operation".