Does Express support the HTTP verb "PATCH", as in:
app.patch("/api/resource", function(req, res){ ... });
I checked the docs and it seems pretty unclear to me. They discuss GET and POST, but seem to lump everything else under "all the other HTTP verbs".
Yes. Express supports not only HTTP verb "patch", but all 23 HTTP verbs. The documentation keeps entries for the most used ones. See this link.
http://expressjs.com/en/api.html#app.METHOD
Yes.
Express.js has a dependency on node-methods. The list of supported methods is found here. The loop that creates the
app.VERB
methods for express is here.