useFirstRender

A hook that detects whether a component is in its first render cycle. Perfect for skipping effects or conditionally rendering content only after the initial mount.

Parameters

This hook doesn’t take any parameters.

Returns

• boolean - True during the component’s first render, false afterward

Usage

import { useFirstRender } from '@rhinolabs/react-hooks';
import { useEffect } from 'react';
 
function DataLoader() {
  const isFirstRender = useFirstRender();
  const [data, setData] = useState(null);
 
  useEffect(() => {
    // Skip effect on first render
    if (isFirstRender) return;
 
    // Run data fetching only after first render
    fetchData().then(setData);
  }, [someDepedency]);
 
  return (
    <div>
      {isFirstRender ? (
        <div>Initial Setup...</div>
      ) : (
        <div>Data: {data}</div>
      )}
    </div>
  );
}

Notes

• Implements persistent state using React refs
• Detects component lifecycle and mount status
• Optimizes effects and prevents unnecessary re-renders
• Controls render behavior based on mount state
• Manages mount-specific logic with effect synchronization