added method getUserIdsInRoleAsync

[bratelefant]

Roles can also be used to add roles to userIds which are actually not user ids at all; typical usecase could be adding roles and scopes to apikeys or device-ids (for example if you use device code flow for oauth2). In the docs, this functionality is intended (parameter users is described as User ID(s) or object(s) with an _id field.)

However, if you want to get a full list of ids that have a certain role or/and scope, there is no method to accomplish this. The existing getUsersInRoleAsync method relies on the Meteor.users collection.

So I added a method getUserIdsInRoleAsync method, that only returns an array of those ids that have the given role+scope, in order to provide this functionality to userIds which are not actual Meteor.users.

[StorytellerCZ]

Thanks for the PR, can you please make the same against Meteor core?

[bratelefant]

Thanks for the PR, can you please make the same against Meteor core?

Sure, I can do that; whats the canonical way to do that? Seems like this is not a good constellation, to have this repo in parallel development to the core package...

[StorytellerCZ]

Just open up the same PR against the core in the package and link to this PR. Once merged into core, we can merge this PR and do a release here.