For this drill, you need to implement a GET endpoint at /echo/:what, where :what is named route parameter.
The endpoint should return an object with keys for host, query, and params. host should be the host for the app. query should be an object representing URL query parameters sent in the request (if any), and echo should be an object representing any named route parameters (in this case, it will only have an entry for "what"). So, for instance, a request to https://my-great-app.glitch.me/echo/foo?cats=dogs should receive a JSON response that looks like this:
{ "host": "brawny-soil.glitch.me", "query": { "cats": "dogs" }, "params": { "what": "foo" } } Note that the values for all of these can be found on the request object, as documented here.