I made a small "poop" in my testing environment, and my system simply bugged the whole one, because npm is giving some bugs:
ChromeConsole:
In the filezilla I have the old packages, the old package.json and the old node_module, but I found it strange doing git checkout I could not get my state back from the last commit.
Note: I've seen in some programming forums and in stackoverflow gringo, I would just have to reinstall some packages, but it is not giving the expected result.