fix: allow for jest runs with plugin

[vobu]

a starting point eventually

[petermuessig]

This doesn't work - the modules are ES modules and need to be imported with the dynamic import... Right now this causes an issue...

[vobu]

yeah, i figured. this PR was essentially just a reminder to get in done. i‘ll work on it.

[petermuessig]

@vobu - the issue is a bit more complicated as the UI5 tooling is built with ESM and therefore can't be required

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This can't be fixed easily in the cds-plugin-ui5 as the issue is related to jest and nodejs - jest forwarded the issue to node:

Jest issue (one of them): jestjs/jest#12286
Node issue: nodejs/node#35889 (fixed with Node.js >= 21)

After upgrading my local nodejs to 21 and using the following command line:

NODE_OPTIONS=--experimental-vm-modules jest tests/test.js

it works...

This needs to be fixed by using a newer Node.js version plus enabling the ESM support for JEST: https://jestjs.io/docs/ecmascript-modules

Maybe something to add to the documentation... So, I'll keep this PR open for now...

[petermuessig]

Closing in favor of #901