NOT TO BE MERGED Ds custom editor squashed (#1543)

.vscode/launch.json

@@ -8,18 +8,20 @@
             "request": "launch",
             "runtimeExecutable": "${execPath}",
             "args": [
-                "--extensionDevelopmentPath=${workspaceFolder}"
+                "--extensionDevelopmentPath=${workspaceFolder}",
+                "--enable-proposed-api",
+                "ms-python.python"
             ],
             "stopOnEntry": false,
             "smartStep": true,
             "sourceMaps": true,
             "outFiles": [
                 "${workspaceFolder}/out/**/*"
             ],
-            "preLaunchTask": "Compile",
+            // "preLaunchTask": "Compile",
             "skipFiles": [
                 "<node_internals>/**"
-            ]
+            ],
         },
         {
             "name": "Extension inside container",

build/webpack/webpack.datascience-ui.config.builder.js

@@ -100,7 +100,7 @@ function buildConfiguration(isNotebook) {
             chunkFilename: `[name].bundle.js`
         },
         mode: 'development', // Leave as is, we'll need to see stack traces when there are errors.
-        devtool: 'source-map',
+        devtool: isProdBuild ? 'source-map' : 'inline-source-map',
         optimization: {
             minimize: isProdBuild,
             minimizer: isProdBuild ? [new TerserPlugin({ sourceMap: true })] : [],

experiments.json

@@ -1,4 +1,3 @@
-
 [
     {
         "name": "AlwaysDisplayTestExplorer - experiment",
@@ -115,4 +114,3 @@
         "max": 100
     }
 ]
-

news/1 Enhancements/9255.md

@@ -0,0 +1 @@
+Implement VS code's custom editor for opening notebooks.

news/1 Enhancements/9821.md

@@ -0,0 +1 @@
+Add undo/redo support to notebooks.

news/2 Fixes/10250.md

@@ -0,0 +1 @@
+Ensure to correctly return env variables of the activated interpreter, when dealing with non-workspace interpreters.