feat: Add a welcome screen to the extension.

build/esbuild/build.ts

@@ -48,6 +48,8 @@ const commonExternals = [
     'vscode',
     'commonjs',
     'node:crypto',
+    'node:fs/promises',
+    'node:path',
     'vscode-jsonrpc', // Used by a few modules, might as well pull this out, instead of duplicating it in separate bundles.
     // Ignore telemetry specific packages that are not required.
     'applicationinsights-native-metrics',

package.json

@@ -91,6 +91,24 @@
                 "category": "Deepnote",
                 "icon": "$(plug)"
             },
+            {
+                "command": "deepnote.newProject",
+                "title": "New project",
+                "category": "Deepnote",
+                "icon": "$(new-file)"
+            },
+            {
+                "command": "deepnote.importNotebook",
+                "title": "Import notebook",
+                "category": "Deepnote",
+                "icon": "$(folder-opened)"
+            },
+            {
+                "command": "deepnote.importJupyterNotebook",
+                "title": "Import Jupyter notebook",
+                "category": "Deepnote",
+                "icon": "$(notebook)"
+            },
             {
                 "command": "dataScience.ClearCache",
                 "title": "%jupyter.command.dataScience.clearCache.title%",
@@ -1853,14 +1871,19 @@
                 {
                     "id": "deepnoteExplorer",
                     "name": "%deepnote.views.explorer.name%",
-                    "when": "workspaceFolderCount != 0",
                     "iconPath": {
                         "light": "./resources/light/deepnote-icon.svg",
                         "dark": "./resources/dark/deepnote-icon.svg"
                     }
                 }
             ]
         },
+        "viewsWelcome": [
+            {
+                "view": "deepnoteExplorer",
+                "contents": "Welcome to Deepnote for VS Code!\nExplore your data with SQL and Python. Build interactive notebooks, collaborate with your team, and share your insights.\n\n\n\n[$(new-file) New Project](command:deepnote.newProject)\n[$(folder-opened) Import Notebook](command:deepnote.importNotebook)"
+            }
+        ],
         "debuggers": [
             {
                 "type": "Python Kernel Debug Adapter",
@@ -2122,6 +2145,7 @@
     "dependencies": {
         "@c4312/evt": "^0.1.1",
         "@deepnote/blocks": "^1.2.0",
+        "@deepnote/convert": "^1.1.0",
         "@enonic/fnv-plus": "^1.3.0",
         "@jupyter-widgets/base": "^6.0.8",
         "@jupyter-widgets/controls": "^5.0.9",

package.nls.json

@@ -250,6 +250,10 @@
     "deepnote.commands.openFile.title": "Open File",
     "deepnote.commands.revealInExplorer.title": "Reveal in Explorer",
     "deepnote.commands.manageIntegrations.title": "Manage Integrations",
+    "deepnote.commands.newProject.title": "New Project",
+    "deepnote.commands.importNotebook.title": "Import Notebook",
+    "deepnote.commands.importJupyterNotebook.title": "Import Jupyter Notebook",
     "deepnote.views.explorer.name": "Explorer",
+    "deepnote.views.explorer.welcome": "No Deepnote notebooks found in this workspace.",
     "deepnote.command.selectNotebook.title": "Select Notebook"
 }

src/notebooks/deepnote/deepnoteDataConverter.ts

@@ -89,10 +89,14 @@ export class DeepnoteDataConverter {
             // Outputs are managed by VS Code natively, not stored in the pocket
             // Preserve outputs when they exist (including newly produced outputs)
             // Only set if not already set to avoid overwriting converter-managed outputs
-            // Only set if the cell actually has outputs (non-empty array) or if the block originally had outputs
             const hadOutputs = cell.metadata?.__hadOutputs;
-            if (cell.outputs && !block.outputs && (cell.outputs.length > 0 || hadOutputs)) {
-                block.outputs = this.transformOutputsForDeepnote(cell.outputs);
+            if (!block.outputs) {
+                // Set outputs if:
+                // 1. The cell has non-empty outputs, OR
+                // 2. The block originally had outputs (even if empty)
+                if ((cell.outputs && cell.outputs.length > 0) || hadOutputs) {
+                    block.outputs = cell.outputs ? this.transformOutputsForDeepnote(cell.outputs) : [];
+                }
             }
 
             // Clean up internal tracking flags from metadata