Throttle in JavaScript

throttle.js

const throttle = (func, limit) => {
  let lastFunc;
  let lastRan;
  return function() {
    const context = this;
    const args = arguments;
    if (!lastRan) {
      func.apply(context, args)
      lastRan = Date.now();
    } else {
      clearTimeout(lastFunc);
      lastFunc = setTimeout(function() {
          if ((Date.now() - lastRan) >= limit) {
            func.apply(context, args);
            lastRan = Date.now();
          }
       }, limit - (Date.now() - lastRan));
    }
  }
}