use-debouncy

useDebouncy

Small (~0.2kb) debounce effect hook for React with TypeScript support

Features

• No dependencies.
• ‍ Tiny. ~0.2kb.
• Performance. Used by requestAnimationFrame.
• Types. Support TypeScript.
• Easy. Use like React effect or function.

Installation

NPM

npm install use-debouncy

Yarn

yarn add use-debouncy

Usage

Demo codesandbox

Use as effect hook

import React, { useState } from 'react';
import { useDebouncyEffect } from 'use-debouncy';

const App = () => {
  const [value, setValue] = useState('');

  useDebouncyEffect(
    () => fetchData(value), // function debounce
    400, // number of milliseconds to delay
    [value], // array values that the debounce depends (like as useEffect)
  );

  return <input value={value} onChange={(event) => setValue(event.target.value)} />;
};

Use as callback function

import React, { useState } from 'react';
import { useDebouncyFn } from 'use-debouncy';

const App = () => {
  const handleChange = useDebouncyFn(
    (event) => fetchData(event.target.value), // function debounce
    400, // number of milliseconds to delay
  );

  return <input value={value} onChange={handleChange} />;
};

API Reference

useDebouncy/effect

function useDebouncyEffect(fn: () => void, wait?: number, deps?: any[]): void;

Prop	Required	Default	Description
fn	✓		Debounce callback.
wait		0	Number of milliseconds to delay.
deps		[]	Array values that the debounce depends (like as useEffect).

useDebouncy/fn

function useDebouncyFn(fn: (...args: any[]) => void, wait?: number): (...args: any[]) => void;

Prop	Required	Default	Description
fn	✓		Debounce handler.
wait		0	Number of milliseconds to delay.

Development & Testing

This project uses modern testing approach with Playwright component tests:

Commands

# Run all tests (Playwright component tests)
yarn test

# Run tests with UI mode for debugging
yarn test --ui

# Run linting
yarn lint

# Build the project
yarn build

Test Coverage

The project has comprehensive test coverage including:

• Core functionality tests - Basic debouncing behavior
• Effect hook tests - useDebouncyEffect scenarios
• Function hook tests - useDebouncyFn scenarios
• Integration tests - Real-world usage patterns
• Performance tests - Edge cases and performance validation
• E2E tests - Full application integration with API calls

All tests run across multiple browsers (Chromium, Firefox, WebKit) to ensure cross-browser compatibility.

License