Execute some code on main thread, before worker threads are created?

[donmccurdy]

The codebase I'm testing relies on sharp.js, which has a known limitation with worker threads —

On some platforms, including glibc-based Linux, the main thread must call require('sharp') before worker threads are created. This is to ensure shared libraries remain loaded in memory until after all threads are complete.

I was hoping I might get around this with Ava's require config option, but that seems to run in the worker thread, not the main thread, so it's too late. Does Ava provide some way to ensure a given bit of code runs on the main thread before workers are created, or will I need to disable worker threads for glibc-based Linux platforms?

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EDIT: Possibly related to #3027.

[novemberborn]

Unofficially, ava.config.js is imported in the main thread, so you can require it there.