ECMAScript Cookbook

How it works...

Promise.resolve creates a new promise that resolves the value passed to it. The subsequent then method will receive that resolved value as it's argument. This method can seem a little roundabout but can be very helpful for composing asynchronous functions. In effect, the constituents of the promise chain don't need to be aware that they are in the chain (including the first step). This makes transitioning from code that doesn't use promises to code that does much easier.