How to authenticate Octokit via the GitHub CLI?

[electrovir]

I'm trying to use Octokit for a TypeScript script that I want to run locally on my own computer (only).

I already have the GitHub CLI installed (gh) and authenticated. How do I utilize that already-authenticated service to authenticate an Octokit class instance?

I could just execute raw shell commands from my script (like gh pr list) but then I get none of the Octokit types or convenient API.