Specify `node-gyp` as a dependency.

[quisido]

I'm getting this error in my Cloudflare Worker when using Yarn 4:

➤ YN0000: │ ssh2@npm:1.15.0 STDOUT Usage Error: Couldn't find a script name "node-gyp" in the top-level (used by ssh2@npm:1.15.0). This typically happens because some package depends on "node-gyp" to build itself, but didn't list it in their dependencies. To fix that, please run "yarn add node-gyp" into your top-level workspace. You also can open an issue on the repository of the specified package to suggest them to use an optional peer dependency.

While I can go about manually installing it at the root, I figured it was worth asking to fix it at the source if possible.

[mscdex]

My projects target npm because that's what's always been bundled with node. npm bundles node-gyp. AFAIK there is no way to ensure that only one copy of it is installed if I were to add it as an explicit dependency in one way or another.

[mscdex]

Besides, node-gyp is not required for this project anyway, it's optional.

[quisido]

I'm guessing the concern is that it should be marked as an optional peer dependency, per the last sentence in the error:

You also can open an issue on the repository of the specified package to suggest them to use an optional peer dependency.

Relevant StackOverflow answer

It should have a peerDependency entry because you expect the consuming environment to provide it for you, and it should have a peerDependenciesMeta entry because -- as you said -- it's optional.

As is, the failure is fatal, because it is neither marked as provided by the environment nor optional.

It seems like a trivial fix. I can open a PR.