Upgrade to JupyterLab 4

.github/workflows/build.yml

@@ -22,7 +22,7 @@ jobs:
         uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
 
       - name: Install dependencies
-        run: python -m pip install -U jupyterlab~=3.1
+        run: python -m pip install -U jupyterlab~=4.0
 
       - name: Lint the extension
         run: |
@@ -81,19 +81,12 @@ jobs:
       - 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~=3.1" jupyter_scheduler*.whl
-
-
+          pip install "jupyterlab~=4.0" jupyter_scheduler*.whl
           jupyter server extension list
           jupyter server extension list 2>&1 | grep -ie "jupyter_scheduler.*OK"
-
           jupyter labextension list
           jupyter labextension list 2>&1 | grep -ie "@jupyterlab/scheduler.*OK"
-          python -m jupyterlab.browser_check --no-chrome-test
+          python -m jupyterlab.browser_check
 
   integration-tests:
     name: Integration tests
@@ -118,7 +111,7 @@ jobs:
       - name: Install the extension
         run: |
           set -eux
-          python -m pip install "jupyterlab~=3.1" jupyter_scheduler*.whl
+          python -m pip install "jupyterlab~=4.0" jupyter_scheduler*.whl
 
       - name: Install dependencies
         working-directory: ui-tests
@@ -134,13 +127,12 @@ jobs:
           key: ${{ runner.os }}-${{ hashFiles('ui-tests/yarn.lock') }}
 
       - name: Install browser
-        run: jlpm playwright install chromium
         working-directory: ui-tests
+        run: jlpm install-chromium
 
       - name: Execute integration tests
         working-directory: ui-tests
-        run: |
-          jlpm playwright test
+        run: jlpm test
 
       - name: Upload Playwright Test report
         if: always()

.github/workflows/update-integration-tests.yml

@@ -2,6 +2,10 @@ name: Update Playwright Snapshots
 
 on:
   workflow_dispatch:
+    inputs:
+      number:
+        description: 'PR number'
+        required: true
   issue_comment:
     types: [created, edited]
 
@@ -10,10 +14,8 @@ permissions:
   pull-requests: write
 
 jobs:
-
-
   update-snapshots:
-    if: ${{ github.event.issue.pull_request && contains(github.event.comment.body, 'please update playwright snapshots') }}
+    if: ${{ github.event.inputs || (github.event.issue.pull_request && contains(github.event.comment.body, 'please update playwright snapshots')) }}
     runs-on: ubuntu-latest
 
     steps:
@@ -26,7 +28,7 @@ jobs:
         run: git config --global hub.protocol https
 
       - name: Checkout the branch from the PR that triggered the job
-        run: hub pr checkout ${{ github.event.issue.number }}
+        run: hub pr checkout ${{ github.event.inputs.number || github.event.issue.number }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -36,7 +38,7 @@ jobs:
           python_version: '3.11'
 
       - name: Install dependencies
-        run: python -m pip install -U jupyterlab~=3.1 jupyter-archive
+        run: python -m pip install -U jupyterlab~=4.0
 
       - name: Install extension
         run: |
@@ -50,3 +52,5 @@ jobs:
           # Playwright knows how to start JupyterLab server
           start_server_script: 'null'
           test_folder: ui-tests
+          # use jlpm (not default yet)
+          npm_client: jlpm

.gitignore

@@ -125,3 +125,10 @@ dev/jobs
 
 # jupyter releaser local checkout
 .jupyter_releaser_checkout
+
+# Yarn 3 cache
+.yarn
+
+# Jest coverage reports and a side effect
+coverage
+junit.xml

.yarnrc.yml

@@ -0,0 +1,3 @@
+# these configuration fields are only read by yarn 3 (JL4+)
+nodeLinker: 'node-modules'
+enableImmutableInstalls: false

jest.config.js

@@ -1,42 +1,28 @@
 const jestJupyterLab = require('@jupyterlab/testutils/lib/jest-config');
 
 const esModules = [
+  '@codemirror',
+  '@jupyter/ydoc',
   '@jupyterlab/',
   'lib0',
-  'y\\-protocols',
-  'y\\-websocket',
+  'nanoid',
+  'vscode-ws-jsonrpc',
+  'y-protocols',
+  'y-websocket',
   'yjs'
 ].join('|');
 
-const jlabConfig = jestJupyterLab(__dirname);
-
-const {
-  moduleFileExtensions,
-  moduleNameMapper,
-  preset,
-  setupFilesAfterEnv,
-  setupFiles,
-  testPathIgnorePatterns,
-  transform
-} = jlabConfig;
+const baseConfig = jestJupyterLab(__dirname);
 
 module.exports = {
-  moduleFileExtensions,
-  moduleNameMapper,
-  preset,
-  setupFilesAfterEnv,
-  setupFiles,
-  testPathIgnorePatterns,
-  transform,
+  ...baseConfig,
   automock: false,
-  collectCoverageFrom: ['src/**/*.{ts,tsx}', '!src/**/*.d.ts'],
-  coverageDirectory: 'coverage',
+  collectCoverageFrom: [
+    'src/**/*.{ts,tsx}',
+    '!src/**/*.d.ts',
+    '!src/**/.ipynb_checkpoints/*'
+  ],
   coverageReporters: ['lcov', 'text'],
-  globals: {
-    'ts-jest': {
-      tsconfig: 'tsconfig.json'
-    }
-  },
   testRegex: 'src/.*/.*.spec.ts[x]?$',
   transformIgnorePatterns: [`/node_modules/(?!${esModules}).+`]
 };

jupyter_scheduler/__init__.py

@@ -1,19 +1,10 @@
 """Scheduling API for JupyterLab"""
-import json
-from pathlib import Path
-
 from ._version import __version__
 from .extension import SchedulerApp
 
-HERE = Path(__file__).parent.resolve()
-
-
-with (HERE / "labextension" / "package.json").open() as fid:
-    data = json.load(fid)
-
 
 def _jupyter_labextension_paths():
-    return [{"src": "labextension", "dest": data["name"]}]
+    return [{"src": "labextension", "dest": "@jupyterlab/scheduler"}]
 
 
 def _jupyter_server_extension_points():

package.json

@@ -38,6 +38,7 @@
     "clean:lintcache": "rimraf .eslintcache .stylelintcache",
     "clean:labextension": "rimraf jupyter_scheduler/labextension",
     "clean:all": "jlpm clean:lib && jlpm clean:labextension && jlpm clean:lintcache",
+    "dev-install": "pip install -e . && jupyter labextension develop . --overwrite && jupyter server extension enable jupyter_scheduler",
     "eslint": "jlpm eslint:check --fix",
     "eslint:check": "eslint . --cache --ext .ts,.tsx",
     "install:extension": "jlpm build",
@@ -56,40 +57,39 @@
   "dependencies": {
     "@emotion/react": "^11.10.4",
     "@emotion/styled": "^11.10.4",
-    "@jupyterlab/application": "^3.4.1",
-    "@jupyterlab/apputils": "^3.4.1",
-    "@jupyterlab/coreutils": "^5.4.2",
-    "@jupyterlab/docmanager-extension": "^3.4.2",
-    "@jupyterlab/filebrowser": "^3.4.1",
-    "@jupyterlab/launcher": "^3.4.4",
-    "@jupyterlab/services": "^6.4.2",
-    "@jupyterlab/translation": "^3.4.1",
-    "@jupyterlab/ui-components": "^3.4.2",
-    "@lumino/polling": "^1.9.0",
-    "@lumino/signaling": "^1.10.0",
-    "@lumino/coreutils": "^1.12.0",
-    "@lumino/widgets": "^1.32.0",
+    "@jupyterlab/application": "^4",
+    "@jupyterlab/apputils": "^4",
+    "@jupyterlab/coreutils": "^6",
+    "@jupyterlab/filebrowser": "^4",
+    "@jupyterlab/launcher": "^4",
+    "@jupyterlab/services": "^7",
+    "@jupyterlab/translation": "^4",
+    "@jupyterlab/ui-components": "^4",
+    "@lumino/coreutils": "^2",
+    "@lumino/polling": "^2",
+    "@lumino/signaling": "^2",
+    "@lumino/widgets": "^2",
     "@mui/icons-material": "^5.10.9",
     "@mui/material": "^5.10.6",
     "@mui/system": "^5.10.6",
     "@types/react-dom": "^18.0.5",
     "cronstrue": "^2.12.0",
-    "react": "^17.0.1",
-    "react-dom": "^17.0.1",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
     "tzdata": "^1.0.33"
   },
   "devDependencies": {
     "@babel/core": "^7.0.0",
     "@babel/preset-env": "^7.0.0",
-    "@jupyterlab/builder": "^3.4.7",
-    "@jupyterlab/testutils": "^3.0.0",
-    "@types/jest": "^26.0.0",
+    "@jupyterlab/builder": "^4",
+    "@jupyterlab/testutils": "^4",
+    "@types/jest": "^29",
     "@typescript-eslint/eslint-plugin": "^4.8.1",
     "@typescript-eslint/parser": "^4.8.1",
     "eslint": "^7.14.0",
     "eslint-config-prettier": "^6.15.0",
     "eslint-plugin-prettier": "^3.1.4",
-    "jest": "^26.0.0",
+    "jest": "^29",
     "mkdirp": "^1.0.3",
     "npm-run-all": "^4.1.5",
     "prettier": "^2.1.1",
@@ -99,8 +99,8 @@
     "stylelint-config-recommended": "^6.0.0",
     "stylelint-config-standard": "~24.0.0",
     "stylelint-prettier": "^2.0.0",
-    "ts-jest": "^26.0.0",
-    "typescript": "~4.1.3"
+    "ts-jest": "^29",
+    "typescript": "~4.3.0"
   },
   "resolutions": {
     "@types/react": "^17.0.1",
@@ -132,7 +132,7 @@
   "jupyter-releaser": {
     "hooks": {
       "before-build-npm": [
-        "python -m pip install jupyterlab~=3.1",
+        "python -m pip install jupyterlab~=4.0",
         "jlpm",
         "jlpm build:prod"
       ],

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["hatchling>=1.3.1", "jupyterlab~=3.1"]
+requires = ["hatchling>=1.3.1", "jupyterlab~=4.0"]
 build-backend = "hatchling.build"
 
 [project]

src/index.tsx

@@ -73,7 +73,7 @@ function getSelectedItem(widget: FileBrowser | null): Contents.IModel | null {
   }
 
   // Get the first selected item.
-  const firstItem = widget.selectedItems().next();
+  const firstItem = widget.selectedItems().next()?.value;
   if (firstItem === null || firstItem === undefined) {
     return null;
   }

tsconfig.json

@@ -13,6 +13,7 @@
     "noUnusedLocals": true,
     "preserveWatchOutput": true,
     "resolveJsonModule": true,
+    "skipLibCheck": true,
     "outDir": "lib",
     "rootDir": "src",
     "strict": true,

tsconfig.test.json

@@ -0,0 +1,3 @@
+{
+  "extends": "./tsconfig"
+}

ui-tests/.yarnrc

@@ -0,0 +1,3 @@
+# these configuration fields are only read by yarn 3 (JL4+)
+nodeLinker: 'node-modules'
+enableImmutableInstalls: false