redundant model insertion

src/vs/workbench/contrib/notebook/browser/notebookEditor.ts

@@ -617,7 +617,7 @@ export class NotebookEditor extends BaseEditor implements INotebookEditor {
 	async executeNotebookCell(cell: ICellViewModel): Promise<void> {
 		try {
 			cell.runState = CellRunState.Running;
-			const provider = this.notebookService.getContributedNotebookProviders(cell.uri)[0];
+			const provider = this.notebookService.getContributedNotebookProviders(this.viewModel!.uri)[0];
 			if (provider) {
 				const viewType = provider.id;
 				const notebookUri = CellUri.parse(cell.uri)?.notebook;

src/vs/workbench/contrib/notebook/browser/notebookEditorInput.ts

@@ -54,8 +54,7 @@ export class NotebookEditorModel extends EditorModel {
 		let notebook = this.getNotebook();
 
 		if (notebook) {
-			let mainCell = new NotebookCellTextModel(URI.revive(cell.uri), cell.handle, cell.source, cell.language, cell.cellKind, cell.outputs, cell.metadata);
-			this.notebook.insertNewCell(index, [mainCell]);
+			this.notebook.insertNewCell(index, [cell as NotebookCellTextModel]);
 			this._dirty = true;
 			this._onDidChangeDirty.fire();
 

src/vs/workbench/contrib/notebook/browser/viewModel/codeCellViewModel.ts

@@ -188,11 +188,12 @@ export class CodeCellViewModel extends BaseCellViewModel implements ICellViewMod
 	}
 
 	getOutputOffset(index: number): number {
+		this._ensureOutputsTop();
+
 		if (index >= this._outputCollection.length) {
 			throw new Error('Output index out of range!');
 		}
 
-		this._ensureOutputsTop();
 		const offset = this._outputsTop!.getAccumulatedValue(index - 1);
 		return this.layoutInfo.outputContainerOffset + offset;
 	}