ghost/apps/shade/src/utils/debounce.ts

export function debounce<T extends unknown[]>(func: (...args: T) => void, wait: number, immediate: boolean = false): (...args: T) => void {
    let timeoutId: ReturnType<typeof setTimeout> | null;

    return function (this: unknown, ...args: T): void {
        const later = () => {
            timeoutId = null;
            if (!immediate) {
                func.apply(this, args);
            }
        };

        const callNow = immediate && !timeoutId;

        if (timeoutId) {
            clearTimeout(timeoutId);
        }

        timeoutId = setTimeout(later, wait);

        if (callNow) {
            func.apply(this, args);
        }
    };
}