jupyterlab · cmarmo · Jun 28, 2025 · Jun 28, 2025 · Jun 28, 2025 · Jun 28, 2025
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
@@ -158,7 +158,7 @@ jobs:
         if: steps.filter.outputs.extension == 'true' && startsWith(runner.os, 'Linux') && always()
         uses: actions/upload-artifact@v4
         with:
-          name: ui-test-output
+          name: ${{ matrix.example }}-ui-test-output
           path: |
             ${{ matrix.example }}/ui-tests/test-results
       - name: Uninstall extension

diff --git a/README.md b/README.md
@@ -46,9 +46,10 @@
 
 The goal of this repository is to show how to develop extensions for [JupyterLab](https://github.com/jupyterlab/jupyterlab), presented as short tutorial series.
 
-**Quick start:** 
-- Install, build, and run the `hello-world` extension example in JupyterLab by copying the code below. 
-- This corresponds to the first three sections of the [hello-world extension tutorial](hello-world/README.md). Read these sections for additional details on what these commands are doing and how to use the JupyterLab extension template. 
+**Quick start:**
+
+- Install, build, and run the `hello-world` extension example in JupyterLab by copying the code below.
+- This corresponds to the first three sections of the [hello-world extension tutorial](hello-world/README.md). Read these sections for additional details on what these commands are doing and how to use the JupyterLab extension template.
 - Continue with the tutorial at the [Modify the extension](hello-world/README.md#modify-the-extension) section, if desired.
 
 ```bash

diff --git a/cell-toolbar/.copier-answers.yml b/cell-toolbar/.copier-answers.yml
@@ -1,5 +1,5 @@
 # Changes here will be overwritten by Copier; NEVER EDIT MANUALLY
-_commit: v4.2.4
+_commit: v4.3.8
 _src_path: https://github.com/jupyterlab/extension-template
 author_email: ''
 author_name: Project Jupyter Contributors

diff --git a/cell-toolbar/LICENSE b/cell-toolbar/LICENSE
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2025, Project Jupyter Contributors
+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.
diff --git a/cell-toolbar/package.json b/cell-toolbar/package.json
@@ -16,6 +16,7 @@
     "files": [
         "lib/**/*.{d.ts,eot,gif,html,jpg,js,js.map,json,png,svg,woff2,ttf}",
         "style/**/*.{css,js,eot,gif,html,jpg,json,png,svg,woff2,ttf}",
+        "src/**/*.{ts,tsx}",
         "schema/*.json"
     ],
     "main": "lib/index.js",
@@ -73,7 +74,7 @@
         "eslint-config-prettier": "^8.8.0",
         "eslint-plugin-prettier": "^5.0.0",
         "jest": "^29.2.0",
-        "npm-run-all": "^4.1.5",
+        "npm-run-all2": "^7.0.1",
         "prettier": "^3.0.0",
         "rimraf": "^5.0.1",
         "source-map-loader": "^1.0.2",
@@ -83,7 +84,7 @@
         "stylelint-config-standard": "^34.0.0",
         "stylelint-csstree-validator": "^3.0.0",
         "stylelint-prettier": "^4.0.0",
-        "typescript": "~5.0.2",
+        "typescript": "~5.8.0",
         "yjs": "^13.5.0"
     },
     "sideEffects": [

diff --git a/cell-toolbar/pyproject.toml b/cell-toolbar/pyproject.toml
@@ -5,8 +5,8 @@ build-backend = "hatchling.build"
 [project]
 name = "jupyterlab_examples_cell_toolbar"
 readme = "README.md"
-license = {text = "BSD-3-Clause License"}
-requires-python = ">=3.8"
+license = { file = "LICENSE" }
+requires-python = ">=3.9"
 classifiers = [
     "Framework :: Jupyter",
     "Framework :: Jupyter :: JupyterLab",
@@ -16,11 +16,11 @@ classifiers = [
     "License :: OSI Approved :: BSD License",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
 ]
 dependencies = [
 ]
@@ -30,7 +30,7 @@ dynamic = ["version", "description", "authors", "urls", "keywords"]
 source = "nodejs"
 
 [tool.hatch.metadata.hooks.nodejs]
-fields = ["description", "authors", "urls"]
+fields = ["description", "authors", "urls", "keywords"]
 
 [tool.hatch.build.targets.sdist]
 artifacts = ["jupyterlab_examples_cell_toolbar/labextension"]

diff --git a/cell-toolbar/tsconfig.json b/cell-toolbar/tsconfig.json
@@ -6,6 +6,7 @@
     "esModuleInterop": true,
     "incremental": true,
     "jsx": "react",
+    "lib": ["DOM", "ES2018", "ES2020.Intl"],
     "module": "esnext",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -17,7 +18,8 @@
     "rootDir": "src",
     "strict": true,
     "strictNullChecks": true,
-    "target": "ES2018"
+    "target": "ES2018",
+    "types": ["jest"]
   },
   "include": ["src/*"]
 }
diff --git a/cell-toolbar/ui-tests/README.md b/cell-toolbar/ui-tests/README.md
@@ -12,7 +12,7 @@ in [jupyter_server_test_config.py](./jupyter_server_test_config.py).
 
 The default configuration will produce video for failing tests and an HTML report.
 
-> There is a new experimental UI mode that you may fall in love with; see [that video](https://www.youtube.com/watch?v=jF0yA-JLQW0).
+> There is a UI mode that you may like; see [that video](https://www.youtube.com/watch?v=jF0yA-JLQW0).
 
 ## Run the tests
 

diff --git a/cell-toolbar/ui-tests/tests/cell_toolbar.spec.ts b/cell-toolbar/ui-tests/tests/cell_toolbar.spec.ts
@@ -8,9 +8,9 @@ test('should add buttons on code cell and markdown cell', async ({ page }) => {
   await page.waitForSelector('text=| Idle');
 
   const RUN_CODE =
-    '.jp-cell-toolbar button[data-command="toolbar-button:run-code-cell"]';
+    '.jp-cell-toolbar jp-button[data-command="toolbar-button:run-code-cell"]';
   const RENDER_MD =
-    '.jp-cell-toolbar button[data-command="toolbar-button:render-markdown-cell"]';
+    '.jp-cell-toolbar jp-button[data-command="toolbar-button:render-markdown-cell"]';
 
   await page.notebook.setCell(0, 'code', 'print("Hello, JupyterLab")');
   await expect(page.locator(RUN_CODE)).toBeVisible();

diff --git a/clap-button-message/.copier-answers.yml b/clap-button-message/.copier-answers.yml
@@ -1,5 +1,5 @@
 # Changes here will be overwritten by Copier; NEVER EDIT MANUALLY
-_commit: v4.2.4
+_commit: v4.3.8
 _src_path: https://github.com/jupyterlab/extension-template
 author_email: ''
 author_name: Project Jupyter Contributors

diff --git a/clap-button-message/LICENSE b/clap-button-message/LICENSE
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2025, Project Jupyter Contributors
+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.
diff --git a/clap-button-message/package.json b/clap-button-message/package.json
@@ -15,7 +15,8 @@
     "author": "Project Jupyter Contributors",
     "files": [
         "lib/**/*.{d.ts,eot,gif,html,jpg,js,js.map,json,png,svg,woff2,ttf}",
-        "style/**/*.{css,js,eot,gif,html,jpg,json,png,svg,woff2,ttf}"
+        "style/**/*.{css,js,eot,gif,html,jpg,json,png,svg,woff2,ttf}",
+        "src/**/*.{ts,tsx}"
     ],
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
@@ -67,7 +68,8 @@
         "eslint": "^8.36.0",
         "eslint-config-prettier": "^8.8.0",
         "eslint-plugin-prettier": "^5.0.0",
-        "npm-run-all": "^4.1.5",
+        "jest": "^29.2.0",
+        "npm-run-all2": "^7.0.1",
         "prettier": "^3.0.0",
         "rimraf": "^5.0.1",
         "source-map-loader": "^1.0.2",
@@ -77,7 +79,7 @@
         "stylelint-config-standard": "^34.0.0",
         "stylelint-csstree-validator": "^3.0.0",
         "stylelint-prettier": "^4.0.0",
-        "typescript": "~5.0.2",
+        "typescript": "~5.8.0",
         "yjs": "^13.5.0"
     },
     "sideEffects": [

diff --git a/clap-button-message/pyproject.toml b/clap-button-message/pyproject.toml
@@ -5,8 +5,8 @@ build-backend = "hatchling.build"
 [project]
 name = "jupyterlab_examples_shout_button"
 readme = "README.md"
-license = { text = "BSD-3-Clause License" }
-requires-python = ">=3.8"
+license = { file = "LICENSE" }
+requires-python = ">=3.9"
 classifiers = [
     "Framework :: Jupyter",
     "Framework :: Jupyter :: JupyterLab",
@@ -16,11 +16,11 @@ classifiers = [
     "License :: OSI Approved :: BSD License",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
 ]
 dependencies = [
 ]
@@ -30,7 +30,7 @@ dynamic = ["version", "description", "authors", "urls", "keywords"]
 source = "nodejs"
 
 [tool.hatch.metadata.hooks.nodejs]
-fields = ["description", "authors", "urls"]
+fields = ["description", "authors", "urls", "keywords"]
 
 [tool.hatch.build.targets.sdist]
 artifacts = ["jupyterlab_examples_shout_button/labextension"]

diff --git a/clap-button-message/tsconfig.json b/clap-button-message/tsconfig.json
@@ -6,6 +6,7 @@
     "esModuleInterop": true,
     "incremental": true,
     "jsx": "react",
+    "lib": ["DOM", "ES2018", "ES2020.Intl"],
     "module": "esnext",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -17,7 +18,8 @@
     "rootDir": "src",
     "strict": true,
     "strictNullChecks": true,
-    "target": "ES2018"
+    "target": "ES2018",
+    "types": ["jest"]
   },
   "include": ["src/*"]
 }
diff --git a/clap-button-message/ui-tests/README.md b/clap-button-message/ui-tests/README.md
@@ -12,7 +12,7 @@ in [jupyter_server_test_config.py](./jupyter_server_test_config.py).
 
 The default configuration will produce video for failing tests and an HTML report.
 
-> There is a new experimental UI mode that you may fall in love with; see [that video](https://www.youtube.com/watch?v=jF0yA-JLQW0).
+> There is a UI mode that you may like; see [that video](https://www.youtube.com/watch?v=jF0yA-JLQW0).
 
 ## Run the tests
 

diff --git a/codemirror-extension/.copier-answers.yml b/codemirror-extension/.copier-answers.yml
@@ -1,5 +1,5 @@
 # Changes here will be overwritten by Copier; NEVER EDIT MANUALLY
-_commit: v4.2.4
+_commit: v4.3.8
 _src_path: gh:jupyterlab/extension-template
 author_email: ''
 author_name: Project Jupyter Contributors

diff --git a/codemirror-extension/LICENSE b/codemirror-extension/LICENSE
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2025, Project Jupyter Contributors
+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.
diff --git a/codemirror-extension/package.json b/codemirror-extension/package.json
@@ -15,7 +15,8 @@
     "author": "Project Jupyter Contributors",
     "files": [
         "lib/**/*.{d.ts,eot,gif,html,jpg,js,js.map,json,png,svg,woff2,ttf}",
-        "style/**/*.{css,js,eot,gif,html,jpg,json,png,svg,woff2,ttf}"
+        "style/**/*.{css,js,eot,gif,html,jpg,json,png,svg,woff2,ttf}",
+        "src/**/*.{ts,tsx}"
     ],
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
@@ -71,7 +72,7 @@
         "eslint-config-prettier": "^8.8.0",
         "eslint-plugin-prettier": "^5.0.0",
         "jest": "^29.2.0",
-        "npm-run-all": "^4.1.5",
+        "npm-run-all2": "^7.0.1",
         "prettier": "^3.0.0",
         "rimraf": "^5.0.1",
         "source-map-loader": "^1.0.2",
@@ -81,7 +82,7 @@
         "stylelint-config-standard": "^34.0.0",
         "stylelint-csstree-validator": "^3.0.0",
         "stylelint-prettier": "^4.0.0",
-        "typescript": "~5.0.2",
+        "typescript": "~5.8.0",
         "yjs": "^13.5.0"
     },
     "sideEffects": [

diff --git a/codemirror-extension/pyproject.toml b/codemirror-extension/pyproject.toml
@@ -5,8 +5,8 @@ build-backend = "hatchling.build"
 [project]
 name = "jupyterlab_examples_codemirror_extension"
 readme = "README.md"
-license = { text = "BSD-3-Clause License" }
-requires-python = ">=3.8"
+license = { file = "LICENSE" }
+requires-python = ">=3.9"
 classifiers = [
     "Framework :: Jupyter",
     "Framework :: Jupyter :: JupyterLab",
@@ -16,11 +16,11 @@ classifiers = [
     "License :: OSI Approved :: BSD License",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
 ]
 dependencies = [
 ]
@@ -30,7 +30,7 @@ dynamic = ["version", "description", "authors", "urls", "keywords"]
 source = "nodejs"
 
 [tool.hatch.metadata.hooks.nodejs]
-fields = ["description", "authors", "urls"]
+fields = ["description", "authors", "urls", "keywords"]
 
 [tool.hatch.build.targets.sdist]
 artifacts = ["jupyterlab_examples_codemirror_extension/labextension"]

diff --git a/codemirror-extension/tsconfig.json b/codemirror-extension/tsconfig.json
@@ -6,6 +6,7 @@
     "esModuleInterop": true,
     "incremental": true,
     "jsx": "react",
+    "lib": ["DOM", "ES2018", "ES2020.Intl"],
     "module": "esnext",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -17,7 +18,8 @@
     "rootDir": "src",
     "strict": true,
     "strictNullChecks": true,
-    "target": "ES2018"
+    "target": "ES2018",
+    "types": ["jest"]
   },
   "include": ["src/*"]
 }