helpful-utils-lite

🚀 Lightweight utility library with debounce, throttle, and memoize — a minimal alternative to lodash.

Installation

npm install helpful-utils-lite

API

debounce(func, wait, options)

• func: Function to debounce
• wait: Delay in ms
• options: { leading: false, trailing: true }

throttle(func, wait, options)

• func: Function to throttle
• wait: Interval in ms
• options: { leading: true, trailing: true }

memoize(func, resolver)

• func: Function to memoize
• resolver: Function to generate cache key (default = first argument)

Usage

In Browser ES-module

<script type="module">
    import { debounce, throttle, memoize } from "https://unpkg.com/helpful-utils-lite";

    const log = debounce(() => console.log("Debounced!"), 300);
    window.addEventListener("resize", log);

    const scroll = throttle(() => console.log("Throttled!"), 1000);
    window.addEventListener("scroll", scroll);

    const square = memoize((n) => n * n);
    console.log(square(5)); // вычислит
    console.log(square(5)); // возьмет из кэша
</script>

In NodeJs (CommonJS)

const { debounce, throttle, memoize } = require("helpful-utils-lite");

const test = memoize((n) => n * 2);
console.log(test(10)); // 20
console.log(test(10)); // кэш

import { debounce, throttle, memoize } from "helpful-utils-lite";

// --- Debounce ---
const search = debounce((q) => {
  console.log("Searching:", q);
}, 300);

window.addEventListener("input", (e) => search(e.target.value));

// --- Throttle ---
const logScroll = throttle(() => {
  console.log("Scroll event:", Date.now());
}, 1000);

window.addEventListener("scroll", logScroll);

// --- Memoize ---
const square = memoize((n) => n * n);

console.log(square(5)); // calculates
console.log(square(5)); // from cache