@widergy/web-utils/lib/function.js

Utility GO! Web utils

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.throttle = exports.debounce = exports.polling = void 0;
const polling = (func, interval = 300, timeout, timeoutCallback) => {
    const intervalId = setInterval(func, interval);
    if (timeout)
        setTimeout(() => {
            clearInterval(intervalId);
            if (timeoutCallback)
                timeoutCallback();
        }, timeout);
    return intervalId;
};
exports.polling = polling;
const debounce = (func, wait = 100, immediate) => {
    let timeout;
    return function debounced(...args) {
        const context = this;
        const later = () => {
            timeout = null;
            if (!immediate)
                func.apply(context, args);
        };
        const callNow = immediate && !timeout;
        clearTimeout(timeout);
        timeout = setTimeout(later, wait);
        if (callNow)
            func.apply(context, args);
    };
};
exports.debounce = debounce;
const throttle = (func, limit = 100) => {
    let lastFunc;
    let lastRan;
    return function throttled(...args) {
        const context = this;
        if (!lastRan) {
            func.apply(context, args);
            lastRan = Date.now();
        }
        else {
            clearTimeout(lastFunc);
            lastFunc = setTimeout(() => {
                if (Date.now() - lastRan >= limit) {
                    func.apply(context, args);
                    lastRan = Date.now();
                }
            }, limit - (Date.now() - lastRan));
        }
    };
};
exports.throttle = throttle;
const FUNCTION_UTILS = {
    polling: exports.polling,
    debounce: exports.debounce,
    throttle: exports.throttle
};
exports.default = FUNCTION_UTILS;