delayFns.js

module.exports = function (delayedFn, period) {
    var queue = [];
    var queueEmpty = true;
    var interval;

    function consume () {
        if (queue.length === 0) {
            queueEmpty = true;
            clearInterval(interval);
        } else {
            delayedFn.apply(null, queue.shift());
        }
    }

    return function (inputs) {
        queue.push(inputs);

        if (queueEmpty) {
            consume();
            setInterval(consume, period)
            queueEmpty = false;
        }
    }
}

my-wish.js

module.exports = function (delayedFn, period) {
    return {
        [[prototype]] : Function.prototype
        queue: [],
        queueEmpty: true,
        interval: null,

        [[call]] : function (...inputs) {
            self.queue.push(inputs);

            if (queueEmpty) {
                consume();
                setInterval(self.consume, period)
                self.queueEmpty = false;
            }
        },

        consume : function consume () {
            if (self.queue.length === 0) {
                self.queueEmpty = true;
                clearInterval(self.interval);
            } else {
                delayedFn.call(null, self.queue.shift());
            }
        }
    };
}