Building Enterprise JavaScript Applications

Verifying the digest in the request

Now that we have added our tests, it's time to implement the feature. Since we know that we want to check the token for most requests, we should not define the token validation logic solely within the Delete User engine. Instead, we should abstract all the generic validation steps (for example, the token is a valid JWT, the signature is well-formed, and so on) into middleware.

To start, create a file at src/middlewares/authenticate/index.js with the following boilerplate:

function authenticate (req, res, next) {}export default authenticate;

First, we want to allow anyone to get a single user and search for users; therefore, when the request is a GET request, we don't need to validate the token. At the top ...