Filters on 'complex' attribute arrays don't seem to work

[DillonSadofsky]

I have built my integration using scimmy and it mostly seems to be working. However, I pulled down the example PostMan tests mentioned here scimmyjs/scimmy-routers#10 (comment)

I brought in parse/filter from scim2-parse-filter for applying filters, but the attribute filtering seems to be automatic/built in.

The issue is that there is a test that hits /Users?attributes=emails[type eq "work"]. The core problem is that even though I have data that should match this attribute filter, it doesn't seem to work correctly. For example, you can see if I limit myself to ids I created to test, I have rows that do have an email sub-object of type "work":

However, if I add back in the filter on type eq "work", it finds no emails:

Which I think is wrong

I put some breakpoints in this library and I ended up tracing down into #filter in scimmy/dist/lib/types.js and it seemed like the issue was that it would see that it was an array filter on a complex attribute, so it'd recurse onto the user.emails, then recurse to user.emails[0], but the inclusions object is empty because this if on line 1755 doesn't pass:

for (let key in {...filterable}) if (Array.isArray(filterable[key]) && filterable[key][0] === "pr") { 

so the emails.type gets ignored, so its an empty object with no inclusions, so my emails[0] doesn't pass the filter type eq "work", which when I bubble up to the part where its filtering the array, we see v is empty now, so it gets thrown out: