How to shrinkwrap devDependencies, but not install them unless necessary?

Question

I have a bunch of devDependencies needed in order to run test suite and have production dependencies locked down with npm shrinkwrap. The problem i

Answer 1

As to npm 5 (I've tried on 5.5.1 and 5.6.0), --production (--only=prod) flag is problematic.

When package-lock.json exists in the folder,

npm shrinkwrap --production

simply changes the file name to npm-shrinkwrap.json.

How I managed to solve this issue is to run:

npm prune --production

and then run:

npm shrinkwrap --production