is there a way to cache the pulumi plugins? it seems npm is wiping out the cache from my CI:

npm ci
npm WARN prepare removing existing node_modules/ before installation

Which CI is this? I would rather find out why it behaves like this? Which version of npm are you using?

So npm ci always removes all node_modules to make sure the modules only adheres to the package.json file.

@bitter-dentist-28132 is the package.json created on an OS different from the CI runner? If so, it looks like this: https://github.com/npm/cli/issues/558#issuecomment-569931551

you're talking about the

package-lock.json

not the

package.json

right?

Yep, my bad.

it looks like @fast-dinner-32080 is correct re: cleaning the `node_modules`:

If a 

node_modules

 is already present, it will be automatically removed before 

npm ci

 begins its install.

https://docs.npmjs.com/cli/ci.html

Hmm.. I thought that was what

npm ci

was all about: read the lock file, and update the

node_modules

only when there are differences.

yeah... very weird that it blows away

node_modules