ts-prime/dist/es/throttle.js

A utility library for JavaScript and Typescript.

/**
 * The Debounce technique allow us to “group” multiple sequential calls in a single one.
 * @description
 * You can find great article that explains how throttle works [here](https://css-tricks.com/debouncing-throttling-explained-examples/)
 * @param func - Any provided function
 * @param debounceTimeMs - duration in milliseconds
 * @signature
 *    P.throttle(func, throttleTimeMs)
 * @example
 *    // Execute log
 *    P.throttle(console.log, 1000)
 * @category Function
 */
import { purry } from "./purry";
export function throttle() {
    return purry(__throttle, arguments);
}
function __throttle(func, throttleTimeMs) {
    // tslint:disable: no-let
    var lastExec = null;
    var result = null;
    return function () {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        if (result == null) {
            lastExec = Date.now();
            result = {
                r: func.apply(void 0, args),
            };
            return result.r;
        }
        var diff = Date.now() - lastExec;
        if (diff >= throttleTimeMs) {
            lastExec = Date.now();
            result = {
                r: func.apply(void 0, args),
            };
            return result.r;
        }
        return result.r;
    };
}