Jest test segfaults when closing Realm on Node 12

[sync-by-unito]

Our Jest test segfaults when closing the Realm when running on Node 12 in certain conditions (specifically, it seems like a timing issue which can be triggered by running npm install before running the tests). This started happening since realm/realm-core#4892.

It seems that the Node environment is possibly being torn down before the Realm is fully closed. See referenced doc for investigation notes.

We have worked around this in #4025 by calling setTimeout with a timeout of 0 at the end of the test. We are assuming that this is an edge case caused by a very specific timing issue on a specific Node version (which will end LTS in May 2022), rather than a real issue in the code, but it may warrant further investigation if we see other possibly related issues.

[sync-by-unito]

➤ Andrew Meyer commented:

This has been fixed for a while.