Fix ipywidgets 7 in JupyterLab 4 (#3927)

* Back to es6 build for ipywidgets 7

This fixes ipywidgets 7 in the case of lab 4

* Remove browser check

Author: martinRenou

.github/workflows/build.yml

@@ -57,7 +57,6 @@ jobs:
         pip install -e .
         jupyter labextension develop . --overwrite
         jupyter labextension list
-        python -m jupyterlab.browser_check
         popd
 
         # Finally, install the base ipywidgets package now that we have the jupyterlab_widgets dependency

packages/base/tsconfig.json

@@ -2,9 +2,7 @@
   "extends": "../../tsconfigbase",
   "compilerOptions": {
     "outDir": "lib",
-    "rootDir": "src",
-    "lib": ["dom", "es5", "es2015.promise", "es2015.iterable"],
-    "target": "es5" 
+    "rootDir": "src"
   },
   "include": ["src/*"]
 }

packages/controls/tsconfig.json

@@ -3,9 +3,7 @@
   "compilerOptions": {
     "outDir": "lib",
     "rootDir": "src",
-    "types": ["mathjax", "node"],
-    "lib": ["dom", "es5", "es2015.promise", "es2015.iterable"],
-    "target": "es5"
+    "types": ["mathjax", "node"]
   },
   "include": ["src/**/*"],
   "exclude": ["src/typedoc.d.ts"],

packages/output/tsconfig.json

@@ -2,9 +2,7 @@
   "extends": "../../tsconfigbase",
   "compilerOptions": {
     "outDir": "lib",
-    "rootDir": "src",
-    "lib": ["dom", "es5", "es2015.promise", "es2015.iterable"],
-    "target": "es5"
+    "rootDir": "src"
   },
   "include": ["src/**/*"],
   "exclude": ["src/typedoc.d.ts"],