package-lock.json not automatically deleted when switching NodePackageManager

[garysassano]

When switching from NodePackageManager.NPM to NodePackageManager.PNPM, Projen genrates a pnpm-lock.yaml file but it doesn't delete the existing package-lock.json.

[mrgrain]

Thanks @garysassano This seems like a reasonable suggestion, but difficult to implement (see below). I think there's just no real story for this kind of "migration" in projen at the moment. In the meantime please delete the file manually.

It's going to be tricky to implement, because:

• projen doesn't create that file, it's npm. projen doesn't even know about it. It's difficult to make safe assumptions about files that projen has no information about. The lock file could have been created for any number of reasons.
• projen currently doesn't support state transitions. What this is asking for is effectively knowing that this file used to be created due to a projen setting and now it is not anymore. However currently projen only has a view on the current state, but not the previous one. Like going from a TS to a Python project also doesn't work.