godaddy-wordpress/go

/**
 *
 * @param {Function} func      Funtion to run against.
 * @param {number}   wait      Amount to wait
 * @param {boolean}  immediate Trigger on leading edge?
 */
const debounce = ( func, wait, immediate ) => {
    let timeout;

    return function() {
        const args = arguments;
        const context = this;

        /**
         * Later
         */
        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 );
        }
    };
};

export default debounce;