In addition to semver, it's worth checking out the Node.js docs stability guide: http://nodejs.org/api/documentation.html http://nodejs.org/api/documentation.h

In addition to semver, it's worth checking out the Node.js docs stability guide: http://nodejs.org/api/documentation.html http://nodejs.org/api/documentation.html While semver is great for getting an overview of the stability of the API interface for a project, I think their guide is a great complement in that it helps people determine the stability of specific interfaces that someone might want to use. This is increasingly valuable as the API surface of a project becomes quite large (which is common for a framework).