I love the Node/npm community, and have been programming JavaScript for so many years it's hard habit to kick :) I'd love to try my hand at Go though... I think it's awesome to see what practices can be shared between communities.

One approach I've been playing with in JavaScript-land is using Promises for all return values, this means that you consistently know how to interact with a return value, whether its concrete-value is available immediately or at a later time -- this doesn't really solve the problem of consuming other people's libraries however!