export function debounce(func, wait, immediate) {
    let timeout;
    return function() {
        let context = this, args = arguments;

        let later = function() {
            timeout = null;
            if (!immediate) {
                func.apply(context, args);
            }
        };

        let callNow = immediate && !timeout;

        clearTimeout(timeout);
        timeout = setTimeout(later, wait);

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