Nx test fails after creation of stencil library

[TimSeyschab]

After creating a new empty nx workspace and creating a stencil library (nx g @nxext/stencil:lib my-lib), jest throws the following error.

$ nx run my-lib:test --verbose

>

> nx run my-lib:test --verbose 
[47:28.6]  testing spec  #files
[47:28.6]  jest args: --projectType=library --tsConfig=libs/my-lib/tsconfig.lib.json
           --configPath=libs/my-lib/stencil.config.ts --outputPath=dist/libs/my-lib --spec --max-workers=8

[ ERROR ]  runJest: TypeError: Class extends value #<Object> is not a constructor or null



Test Suites: 0 of 2 total
Tests:       0 total
Snapshots:   0 total
Time:        0 s
———————————————————————————————————————————————

>  NX   ERROR  Running target "my-lib:test" failed

  Failed tasks:

  - my-lib:test

  Hint: run the command with --verbose for more details.

here is the package.json
package.txt

[ChrisKeck]

I also had this problem when migrating from NX11 to NX12. The cause was incompatible Jest dependencies. After all Jest dependencies (important: Jest@26) were compatible with each other , it worked again. The only pain point is the non-migrated version of the plugin. I can only run it in version 11. All other NX plugins are version 12 :-( In my opinion, this is because: NX 12 brings Jest with version 27. Jest 27 does not yet work with StencilJS, see stenciljs/core#2942 or stenciljs/core#2922. As soon as stenciljs has solved the problem, hopefully this problem has also been solved!
If anyone disagrees or has additional information, please share

[DominikPieper]

The main problem here is definitely the jest version. Something I try to override but unfortunately Nx does set the version of jest to 27. I wait for the stencil fix here eagerly

[TimSeyschab]

Using NX11 does work. Thank you Chris for linking to the issue in stencil-js. I'll wait with the migration to 12 until they fixed the issue

[DominikPieper]

Today Stencil 2.13 came out with support for jest 27