Adds options.transformRequest to allow changing the structure of the request

[Jendoliver]

(Defaults to previous implementation)

I just needed to do this to use an endpoint which was expecting the autocomplete search term in a nested object (something like the example I added to the docs). I agree that this is pretty strange but as modifying the endpoint is not an option and I think this could be the case for another person, my opinion is that this could be helpful.

I know there's a PR with a similar name (#179) but that one only changes the search term instead of changing the request structure.

If there's already a way to do this then sorry for not being able to find it!

[tkirda]

Thanks for this contribution, and apologies for the very long silence.

The project was dormant for several years and has just shipped v2.0, which is a ground-up TypeScript rewrite with a new build (esbuild), test runner (Vitest + jsdom), and CI pipeline. As a result this PR no longer applies cleanly against master, and the surrounding code it touches has changed enough that mechanically rebasing it wouldn't be safe.

I'm closing it as part of a triage pass on the long-stale PR backlog — not because the idea lacks merit. If this change is still valuable to you against 2.0, please open a fresh PR (or an issue first if you'd like to confirm direction); I'll review new submissions against the current codebase promptly.

Thanks again for taking the time.