delay.js

//returns a promise that resolves after a time
function wait(time){
    return new Promise(function(resolve){
      window.setTimeout(resolve,time);
    });
}

//a function that, if called with just a time,
//returns a function that will return a wait...
//that resolves with whatever value it was given
var delay = _.curry(function(time,value){
  return wait(time).then(_.constant(value));
});