Show ID for downvotes from users in group Public Downvoters.

[djls45]

The group name is currently "Public Downvoters" because that's simple and descriptive. I kinda wanted to go with something more "in" for us, like "I am not boomzilla", but I didn't because I figured that it was contrary to the everyone-is-boomzilla in-joke and that newbies might not understand what is the purpose of the group.
The group will need to be created, but this code should work even without the group, if Groups.isMember() returns some falsy value when a group with the provided name does not exist.

[BenLubar]

hmm, isn't Groups.isMember async?

[djls45]

Groups.isMember() isn't called with an "await" later on in the file. I think "done" isn't defined in this context. I have added a simple function to coerce errors to false in a new commit.

[djls45]

Wait...
The Travis CI error is on line 28, character 31, at the token "function":
SocketPosts.getVoters = async function (socket, data) {

I didn't touch this part at all.
The promise map is likely more performant, though, so that's good. And I'm learning more Javascript, so that's a thing, too, I suppose.

[hungrierwtf]

Wait...
The Travis CI error is on line 28, character 31, at the token "function":
SocketPosts.getVoters = async function (socket, data) {

I didn't touch this part at all.

Yeah, that's been happening for a while, even in emoji PRs that just add images