sortBy doesn't perform a stable sort

[goldylucks]

After reading the docs:

This method performs a stable sort, that is, it preserves the original sort order of equal elements.

I implemented two sorts one after the other:

  chats = sortBy(chats, c => -last(c.messages).createdAt)
  chats = sortBy(chats, c => !c.isPinned)

Each one of them works on it's own, but mixing them will cause the second one to mess the first one.

Am I missing something here?

Thanks for the great project btw 🚀

[RillingDev]

Hi!
Could you explain further what you mean by "mixing them" and "mess the first one"?

[goldylucks]

I mean if I use both of them in the order posted above, I expect chats to be sorted by isPinned and then by createdAt, but instead it's only sorted by the last sort, isPinned

Is that clearer?

Thanks!

[papb]

@goldylucks Can you provide a MCVE?

[goldylucks]

I made a sandbox but it works fine, so the problem is probably on my end, so I'm closing this :)