Update JupyterLab 4

.github/workflows/build.yml

@@ -0,0 +1,85 @@
+name: Build
+
+on:
+  push:
+    branches: main
+  pull_request:
+    branches: '*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Base Setup
+      uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
+
+    - name: Install dependencies
+      run: python -m pip install -U "jupyterlab>=4.0.0,<5"
+
+    - name: Lint the extension
+      run: |
+        set -eux
+        jlpm
+        jlpm run lint:check
+
+    - name: Build the extension
+      run: |
+        set -eux
+        python -m pip install .[test]
+
+        jupyter labextension list
+        jupyter labextension list 2>&1 | grep -ie "@jupyter-widgets/jupyterlab-sidecar.*OK"
+
+    - name: Package the extension
+      run: |
+        set -eux
+
+        pip install build
+        python -m build
+        pip uninstall -y "sidecar" jupyterlab
+
+    - name: Upload extension packages
+      uses: actions/upload-artifact@v3
+      with:
+        name: extension-artifacts
+        path: dist/sidecar*
+        if-no-files-found: error
+
+  test_isolated:
+    needs: build
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Install Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.9'
+        architecture: 'x64'
+    - uses: actions/download-artifact@v3
+      with:
+        name: extension-artifacts
+    - name: Install and Test
+      run: |
+        set -eux
+        # Remove NodeJS, twice to take care of system and locally installed node versions.
+        sudo rm -rf $(which node)
+        sudo rm -rf $(which node)
+
+        pip install "jupyterlab>=4.0.0,<5" sidecar*.whl
+
+        jupyter labextension list
+        jupyter labextension list 2>&1 | grep -ie "@jupyter-widgets/jupyterlab-sidecar.*OK"
+
+
+  check_links:
+    name: Check Links
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v3
+      - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
+      - uses: jupyterlab/maintainer-tools/.github/actions/check-links@v1

.github/workflows/enforce-label.yml

@@ -0,0 +1,13 @@
+name: Enforce PR label
+
+on:
+  pull_request:
+    types: [labeled, unlabeled, opened, edited, synchronize]
+jobs:
+  enforce-label:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - name: enforce-triage-label
+        uses: jupyterlab/maintainer-tools/.github/actions/enforce-label@v1

.gitignore

@@ -1,3 +1,20 @@
+*.bundle.*
+lib/
+node_modules/
+*.log
+.eslintcache
+.stylelintcache
+*.egg-info/
+.ipynb_checkpoints
+*.tsbuildinfo
+sidecar/labextension
+# Version file is handled by hatchling
+sidecar/_version.py
+
+# Created by https://www.gitignore.io/api/python
+# Edit at https://www.gitignore.io/?templates=python
+
+### Python ###
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]
@@ -8,7 +25,6 @@ __pycache__/
 
 # Distribution / packaging
 .Python
-env/
 build/
 develop-eggs/
 dist/
@@ -20,9 +36,12 @@ lib64/
 parts/
 sdist/
 var/
-*.egg-info/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
 .installed.cfg
 *.egg
+MANIFEST
 
 # PyInstaller
 #  Usually these files are written by a python script from a template
@@ -37,119 +56,66 @@ pip-delete-this-directory.txt
 # Unit test / coverage reports
 htmlcov/
 .tox/
+.nox/
 .coverage
 .coverage.*
 .cache
 nosetests.xml
+coverage/
 coverage.xml
-*,cover
+*.cover
 .hypothesis/
+.pytest_cache/
 
 # Translations
 *.mo
 *.pot
 
-# Django stuff:
-*.log
-local_settings.py
-
-# Flask instance folder
-instance/
-
 # Scrapy stuff:
 .scrapy
 
 # Sphinx documentation
 docs/_build/
-docs/source/_static/embed-bundle.js
-docs/source/_static/embed-bundle.js.map
 
 # PyBuilder
 target/
 
-# IPython Notebook
-.ipynb_checkpoints
-
 # pyenv
 .python-version
 
 # celery beat schedule file
 celerybeat-schedule
 
-# dotenv
-.env
-
-# virtualenv
-venv/
-ENV/
+# SageMath parsed files
+*.sage.py
 
 # Spyder project settings
 .spyderproject
+.spyproject
 
 # Rope project settings
 .ropeproject
 
-# =========================
-# Operating System Files
-# =========================
+# Mr Developer
+.mr.developer.cfg
+.project
+.pydevproject
 
-# OSX
-# =========================
+# mkdocs documentation
+/site
 
-.DS_Store
-.AppleDouble
-.LSOverride
-
-# Thumbnails
-._*
-
-# Files that might appear in the root of a volume
-.DocumentRevisions-V100
-.fseventsd
-.Spotlight-V100
-.TemporaryItems
-.Trashes
-.VolumeIcon.icns
-
-# Directories potentially created on remote AFP share
-.AppleDB
-.AppleDesktop
-Network Trash Folder
-Temporary Items
-.apdisk
-
-# Windows
-# =========================
-
-# Windows image file caches
-Thumbs.db
-ehthumbs.db
-
-# Folder config file
-Desktop.ini
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
 
-# Recycle Bin used on file shares
-$RECYCLE.BIN/
+# Pyre type checker
+.pyre/
 
-# Windows Installer files
-*.cab
-*.msi
-*.msm
-*.msp
+# End of https://www.gitignore.io/api/python
 
-# Windows shortcuts
-*.lnk
-
-
-# NPM
-# ----
-
-**/node_modules/
-sidecar/labextension/*.tgz
-
-# Coverage data
-# -------------
-**/coverage/
+# OSX files
+.DS_Store
 
-# Packed lab extensions
-sidecar/labextension
+# Yarn cache
+.yarn/

.prettierignore

@@ -0,0 +1,6 @@
+node_modules
+**/node_modules
+**/lib
+**/package.json
+!/package.json
+sidecar

.stylelintrc.yaml

@@ -0,0 +1,47 @@
+$schema: https://raw.githubusercontent.com/SchemaStore/schemastore/master/src/schemas/json/stylelintrc.json
+
+extends:
+  - stylelint-config-recommended
+  - stylelint-config-standard
+  - stylelint-prettier/recommended
+
+plugins:
+  - stylelint-csstree-validator
+
+rules:
+  import-notation: null
+  # TODO: fix all of these rules violated in stylelint-config-recommended
+  no-descending-specificity: null
+  # this fixer is incompatible with the copyright headers
+  comment-whitespace-inside: null
+  # these fixers assume use of `autoprefixer`: we _don't_ use any CSS preprocessors
+  property-no-vendor-prefix: null
+  selector-no-vendor-prefix: null
+  value-no-vendor-prefix: null
+  # these fixers doesn't work well with variables
+  alpha-value-notation: null
+  color-function-notation: null
+  # TODO: evaluate these unfixable rules violated in stylelint-config-standard
+  custom-property-pattern: null
+  declaration-block-no-redundant-longhand-properties: null
+  function-linear-gradient-no-nonstandard-direction: null
+  function-url-quotes: null
+  keyframes-name-pattern: null
+  number-max-precision: null
+  selector-class-pattern: null
+  selector-id-pattern: null
+  selector-pseudo-class-no-unknown: null
+  selector-pseudo-element-no-unknown: null
+  selector-not-notation: null
+  # disallow use of more than one bare HTML tag like `div span` to avoid performance regression,
+  # while allowing compounded HTML tags like `button.jp-Button`
+  selector-max-type:
+    - 1
+    - ignore: "compounded"
+  # matching complex selectors is expensive
+  selector-max-class: 4
+  # TODO: decrease max-compound to 3
+  selector-max-compound-selectors: 4
+  # TODO: decrease to 0
+  selector-max-universal: 1
+  csstree/validator: true

.yarnrc.yml

@@ -0,0 +1 @@
+nodeLinker: node-modules

LICENSE

@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2023, Project Jupyter
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.