At the moment, we only have one request handler for our POST /users endpoint, but by the end of this chapter, we will have implemented many more. Defining them all inside the src/index.js file would lead to a huge, unreadable mess. Therefore, let's define each request handler as its own module. Let's begin by creating a file at src/handlers/users/create.js and extract the Create User request handler into it. Previously, the request handler was an anonymous arrow function; now that it's in its own module, let's give it a name of createUser. Lastly, export the function in the same manner as we did with the middleware. You should end up with something like this:
function createUser(req, res) { if ( !Object.prototype.hasOwnProperty.call(req.body, ...
