simple implementation of debounce functionality (Type ahead functionality)

debounce.js

function debounce(fn, time) {
  let setTimeOutId;
  const context = this;
  
  return function() {
    if(setTimeoutId) {
      clearTimeout(setTimeoutId);
    }
    
    setTimeoutId = setTimeout(function(){
      fn.apply(context, arguments);
      setTimeoutId = null;
    }, time)
  }
}

function throttle(fn, time) {
  let setTimeOutId;
  const context = this;
  
  return function() {
    if(setTimeoutId) {
      return;
    }
    
    setTimeoutId = setTimeout(function(){
      fn.apply(context, arguments);
      setTimeoutId = null;
    }, time)
  }
}