npm script command to run a script command from another package.json

Question

I have two separate projects that use npm - so I have both :
some_base_folder/projectA/package.json and some_base_folder/projectB/package.json

Answer 1

You should use --prefix.

npm run [command] --prefix path/to/your/other/folder

And for yarn:

yarn --cwd path/to/your/other/folder [command]