jsdom environment

[joshkel]

I'm guessing that this falls under "Unsupported Jest features", but I want to confirm:

Our project contains a mix of front-end (React) and generic (business logic) code, so we let Jest use its default node environment then configure individual test cases to use JSDom via @jest-environment jsdom docblocks. This is faster than initializing JSDom everywhere.

In a brief experiment with jest-light-runner, I saw that these tests are failing. I assume that, because jest-light-runner doesn't use vm to isolate tests, it doesn't support @jest-environment docblocks and must run every test in the same environment?

Thank you.