patmigliaccio.com/rate-limiting 3/20/2017

rate-limiting-limiter-recursive.js

function limiter(fn, wait){
    let isCalled = false,
        calls = [];

    let caller = function(){
        if (calls.length && !isCalled){
            isCalled = true;
            calls.shift().call();
            setTimeout(function(){
                isCalled = false;
                caller();
            }, wait);
        }
    };

    return function(){
        calls.push(fn);
        caller();
    };
}