3.0 branch: jlpm install includes two incompatible versions of @lumino/widgets, breaks build

[tomjakubowski]

Description

When creating an extension from the 3.0 branch, two versions of @lumino/widgets are included which causes the Typescript bulid to fail.

Reproduce

1. conda create -n fext --override-channels --strict-channel-priority -c conda-forge -c nodefaults jupyterlab=3 cookiecutter nodejs
2. conda activate fext
3. cookiecutter https://github.com/jupyterlab/extension-cookiecutter-ts --checkout 3.0 (defaults for all prompts)
4. cd myextension
5. pip install -ve .

This produces an error about mismatched interfaces in @lumino/widgets.

  $ tsc --sourceMap
  node_modules/@jupyterlab/rendermime/lib/widgets.d.ts(8,31): error TS2420: Class 'RenderedCommon' incorrectly implements interface 'IRenderer'.
    The types of 'title.owner.layout' are incompatible between these types.
      Type 'import("/Users/tom/tmp/myextension/node_modules/@lumino/widgets/types/layout").Layout | null' is not assignable to type 'import("/Users/tom/tmp/myextension/node_modules/@jupyterlab/rendermime-interfaces/node_modules/@lumino/widgets/types/layout").Layout | null'.
        Type 'import("/Users/tom/tmp/myextension/node_modules/@lumino/widgets/types/layout").Layout' is not assignable to type 'import("/Users/tom/tmp/myextension/node_modules/@jupyterlab/rendermime-interfaces/node_modules/@lumino/widgets/types/layout").Layout'.
          Property '[Symbol.iterator]' is missing in type 'import("/Users/tom/tmp/myextension/node_modules/@lumino/widgets/types/layout").Layout' but required in type 'import("/Users/tom/tmp/myextension/node_modules/@jupyterlab/rendermime-interfaces/node_modules/@lumino/widgets/types/layout").Layout'.

The culprit is that @jupyterlab/rendermime-interfaces version 3.8.2 is bringing in an extra version of @lumino/widgets which is incompatible. I diagnosed this using jlpm list.

% jlpm list --pattern '@lumino/widgets'
yarn list v1.21.1
├─ @jupyterlab/rendermime-interfaces@3.8.2
│  └─ @lumino/widgets@2.2.0
└─ @lumino/widgets@1.37.2

I am able to work around the issue by instructing yarn to use rendermime-interfaces 3.6.5:

  "resolutions": {
    "@jupyterlab/rendermime-interfaces": "3.6.5"
  },

Expected behavior

A working build w/ only one resolved version of @lumino/widgets

Context

• Operating System and version: macOS 13.3
• Browser and version: N/A
• JupyterLab version: 3.5.3

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[fcollonval]

Hey @tomjakubowski thanks for reporting. I would recommend you to use the following resolution instead of the one you mentionned:

"resolutions": {
  "@lumino/widgets": "^1.0.0"
}

This will make your set up more robust.

[fcollonval]

@tomjakubowski I updated the 3.0 branch for this.