Which Node.js project uses a given dependency?

I have a folder that contains all my cloned GitHub repositories. Now I would like to get a list of all the repositories that reference a given dependency.

I think of something such as:

$ whouses async

And then I'd like to get a list of all repositories, where async is either referenced as a dependency or a devDependency. Basically, all whouses would need to do is to enter each sub-folder of the current folder and check the package.json file.

Is there a tool available that does this, or am I better off writing one for myself?