Discuss key comparison somewhere?

[hoclun-rigsep]

I was thinking that there should be some mention of key equality in the relevant API docs, warning that key values should be primitives because someMap.set([1,2],3).has([1,2]) is falsy, and then I started thinking, what if you did want to key on multiple properties? Should we give canonical advice how best to handle that?

[josepot]

Should we give canonical advice how best to handle that?

Most definitely. In fact, we've had issues opened in the past related to this topic. So, yes, most definitely, we should explain this better.