throw an error with a clear message when a notebook document is missi…

…ng, #115018
microsoft · Jan 26, 2021 · 005db83 · 005db83
1 parent 0a05379
commit 005db83
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/src/vs/workbench/api/common/extHostNotebookDocument.ts b/src/vs/workbench/api/common/extHostNotebookDocument.ts
@@ -113,14 +113,17 @@ export class ExtHostCell extends Disposable {
  get cell(): vscode.NotebookCell {
  if (!this._cell) {
  const that = this;
- const document = this._extHostDocument.getDocument(this.uri)!.document;
+ const data = this._extHostDocument.getDocument(this.uri);
+ if (!data) {
+ throw new Error(`MISSING extHostDocument for notebook cell: ${this.uri}`);
+ }
  this._cell = Object.freeze({
  get index() { return that._notebook.getCellIndex(that); },
  notebook: that._notebook.notebookDocument,
  uri: that.uri,
  cellKind: this._cellData.cellKind,
- document,
- get language() { return document.languageId; },
+ document: data.document,
+ get language() { return data!.document.languageId; },
  get outputs() { return that._outputs; },
  set outputs(value) { that._updateOutputs(value); },
  get metadata() { return that._metadata; },