> A specific version of a package is immutable on NPM. That's not true. I thought it was but it's not. That's the terrible part. To demonstrate with one of th

> A specific version of a package is immutable on NPM. That's not true. I thought it was but it's not. That's the terrible part. To demonstrate with one of the packages that was removed, run: $ npm info andthen You'll see that versions 0.0.1 and 0.0.2 were published at one point. However, for "versions" it only mentions 2.0.0. And of course, if you run: $ npm install andthen@0.0.2 It blows up in your face.