Update to ipywidgets 8 (#119)

* Update to ipywidgets 8

* Fix tests

Author: martinRenou

.github/workflows/build.yml

@@ -29,7 +29,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install -U cookiecutter jupyterlab~=3.0
+          python -m pip install -U cookiecutter jupyterlab~=3.0 ipywidgets
 
       - name: Install the extension
         run: |

README.md

@@ -65,7 +65,6 @@ notebook / lab frontend. For lab, this is done by the command:
 
 ```
 jupyter labextension develop --overwrite .
-yarn run build
 ```
 
 For classic notebook, you can run:
@@ -80,6 +79,11 @@ the `install` command every time that you rebuild your extension. For certain in
 you might also need another flag instead of `--sys-prefix`, but we won't cover the meaning
 of those flags here.
 
+Every time you make a change in the TypeScript code, you will need to rebuild it then refresh the browser page:
+
+```
+yarn run build
+```
 
 ### How to see your changes
 #### Typescript:

{{cookiecutter.github_project_name}}/.gitignore

@@ -146,7 +146,6 @@ $RECYCLE.BIN/
 
 **/node_modules/
 {{ cookiecutter.python_package_name  }}/nbextension/index.*
-{{ cookiecutter.python_package_name  }}/labextension/*.tgz
 
 # Coverage data
 # -------------

{{cookiecutter.github_project_name}}/package.json

@@ -49,14 +49,15 @@
     "watch:labextension": "jupyter labextension watch ."
   },
   "dependencies": {
-    "@jupyter-widgets/base": "^1.1.10 || ^2.0.0 || ^3.0.0 || ^4.0.0"
+    "@jupyter-widgets/base": "^1.1.10 || ^2 || ^3 || ^4 || ^5 || ^6"
   },
   "devDependencies": {
     "@babel/core": "^7.5.0",
     "@babel/preset-env": "^7.5.0",
+    "@jupyter-widgets/base-manager": "^1.0.2",
     "@jupyterlab/builder": "^3.0.0",
-    "@phosphor/application": "^1.6.0",
-    "@phosphor/widgets": "^1.6.0",
+    "@lumino/application": "^1.6.0",
+    "@lumino/widgets": "^1.6.0",
     "@types/jest": "^26.0.0",
     "@types/webpack-env": "^1.13.6",
     "@typescript-eslint/eslint-plugin": "^3.6.0",

{{cookiecutter.github_project_name}}/src/__tests__/utils.ts

@@ -2,6 +2,7 @@
 // Distributed under the terms of the Modified BSD License.
 
 import * as widgets from '@jupyter-widgets/base';
+import * as baseManager from '@jupyter-widgets/base-manager';
 import * as services from '@jupyterlab/services';
 
 let numComms = 0;
@@ -44,7 +45,7 @@ export class MockComm implements widgets.IClassicComm {
   _on_close: ((x?: any) => void) | null = null;
 }
 
-export class DummyManager extends widgets.ManagerBase<HTMLElement> {
+export class DummyManager extends baseManager.ManagerBase {
   constructor() {
     super();
     this.el = window.document.createElement('div');

{{cookiecutter.github_project_name}}/src/plugin.ts

@@ -1,9 +1,9 @@
 // Copyright (c) {{ cookiecutter.author_name }}
 // Distributed under the terms of the Modified BSD License.
 
-import { Application, IPlugin } from '@phosphor/application';
+import { Application, IPlugin } from '@lumino/application';
 
-import { Widget } from '@phosphor/widgets';
+import { Widget } from '@lumino/widgets';
 
 import { IJupyterWidgetRegistry } from '@jupyter-widgets/base';