"//" keys should be ignored in "resolution" section of package.json

[Peeja]

What is the current behavior?

"//" keys (comments) in the "resolution" section are not ignored.

Steps to reproduce:

1. Add a key to the "resolution" section of a package.json like:

   {
     "resolution": {
       "//": "This should be a comment."
     }
   }
   

2. Run yarn install.

3. See warning:

   warning Resolution field "//" does not end with a valid package name and will be ignored
   

What is the expected behavior?

The key should be ignored. "//" keys are a standard way of commenting in package.json files in lieu of actual comments being available in JSON. (The "resolution" section in particular is a place where comments are necessary, so you can communicate why you're doing heavy-handed dependency tweaking.)

Please mention your node.js, yarn and operating system version.

• Node v8.7.0
• Yarn v1.2.1
• macOS 10.12.6 (16G29)

[rally25rs]

~~~It seems to work for me in Yarn 1.2.1~~~

Edit: the section name should be "resolution**s**" not "resolution" :)

Now I see the same warning.

Ah I guess it is noted in #3829 that:

>  I'd also avoid cleaning up all // keys and limit it to dependencies, devDependencies etc. 

so it looks like we just need to add `resolutions` to that list. Should be super easy. I'll get a PR for this tomorrow.

[Peeja]

@rally25rs Thanks!