Migrate off Jest

[NullVoxPopuli]

Jest integration with anything is pretty bad

We should move to vitest or something that works with javascript by default.

This is using https://marketplace.visualstudio.com/items?itemName=Orta.vscode-jest

[NullVoxPopuli]

oh no, now it's in the terminal

[bmish]

Our unit tests have to be run with npm run test:jest to avoid those errors. This is following the instructions of https://jestjs.io/docs/ecmascript-modules for ESM support.

It looks like the VSCode extension can be instructed to use that command with an option: https://marketplace.visualstudio.com/items?itemName=Orta.vscode-jest#jestcommandline

We migrated from Mocha to Jest years ago:

• Replace Mocha with Jest #968

We have a lot of tests and use a lot of Jest features like various assertions, snapshot testing, and test coverage enforcement. So it's probably not worth the effort to try to migrate to something else.

Hopefully Jest will streamline ESM support so things work better by default, if they haven't already.

[NullVoxPopuli]

Vitest supports jest's API and has those features and more tho