Cover Your Apps While Still Using npm

Every once in a while, the JavaScript and Node.js ecosystem experiences something that is deeply disturbing to many developers: an outage of the npm registry.
Whenever this happens, we hear outcries that npm is the single point of failure for the entire ecosystem and that the entire ecosystem is doomed because of this.

Link: https://dzone.com/articles/cover-your-apps-while-still-using-npm