What's the benefit of await Promises.delay(10, runTrial()) over just runTrial?

I … don't know. I think it was in your code? :) I'm really not a specialist in how browsers deal with asynchronous code, so.

Haha, it was in https://observablehq.com/@duaneatat/apache-arrow-filtering-vs-array-filter. I guess it might help the browser do some things such as gc.

I've switched to observable inputs

Awesome. I ported it back.

Note requestIdleCallback does not work in Safari.