I've seen some posts that refer to running npm with a -d argument. For example, this issue refers to doing npm -d install coffee-script. There are a few other pages that also refer to this syntax, including the install instructions for at least one npm package.
But I've been unable to find any documentation for this -d argument. The docs for npm install make no mention of -d, nor does the npm FAQ, nor do any of the other documentation pages I've looked through.
Does the -d option do anything? If so, what?
