m3-academy-template-vtexio-Rhayllon/custom/react/utils/throttle.ts

export const throttle = <F extends (...args: any[]) => any>(
    func: F,
    waitFor: number
): any => {
    const now = () => new Date().getTime();
    const resetStartTime = () => (startTime = now());
    let timeout: any;
    let startTime: number = now() - waitFor;

    return (...args: Parameters<F>): Promise<ReturnType<F>> =>
        new Promise((resolve) => {
            const timeLeft = startTime + waitFor - now();
            if (timeout) {
                clearTimeout(timeout);
            }
            if (startTime + waitFor <= now()) {
                resetStartTime();
                resolve(func(...args));
            } else {
                timeout = setTimeout(() => {
                    resetStartTime();
                    resolve(func(...args));
                }, timeLeft);
            }
        });
};