fix #101871.

src/vs/workbench/api/browser/mainThreadNotebook.ts

@@ -415,7 +415,13 @@ export class MainThreadNotebooks extends Disposable implements MainThreadNoteboo
 	}
 
 	async $registerNotebookRenderer(extension: NotebookExtensionDescription, type: string, selectors: INotebookMimeTypeSelector, preloads: UriComponents[]): Promise<void> {
-		const renderer = new MainThreadNotebookRenderer(this._proxy, type, extension.id, URI.revive(extension.location), selectors, preloads.map(uri => URI.revive(uri)));
+		const staticContribution = this._notebookService.getContributedNotebookOutputRenderers(type);
+
+		if (!staticContribution) {
+			throw new Error(`Notebook renderer for '${type}' is not statically registered.`);
+		}
+
+		const renderer = new MainThreadNotebookRenderer(this._proxy, type, staticContribution.displayName, extension.id, URI.revive(extension.location), selectors, preloads.map(uri => URI.revive(uri)));
 		this._notebookRenderers.set(type, renderer);
 		this._notebookService.registerNotebookRenderer(type, renderer);
 	}
@@ -674,10 +680,11 @@ export class MainThreadNotebookRenderer implements INotebookRendererInfo {
 	constructor(
 		private readonly _proxy: ExtHostNotebookShape,
 		readonly id: string,
+		public displayName: string,
 		readonly extensionId: ExtensionIdentifier,
 		readonly extensionLocation: URI,
 		readonly selectors: INotebookMimeTypeSelector,
-		readonly preloads: URI[]
+		readonly preloads: URI[],
 	) {
 
 	}

src/vs/workbench/api/common/extHostNotebook.ts

@@ -964,7 +964,7 @@ export class ExtHostNotebookController implements ExtHostNotebookShape, ExtHostN
 		filter: vscode.NotebookOutputSelector,
 		renderer: vscode.NotebookOutputRenderer
 	): vscode.Disposable {
-		if (this._notebookKernels.has(type)) {
+		if (this._notebookOutputRenderers.has(type)) {
 			throw new Error(`Notebook renderer for '${type}' already registered`);
 		}
 

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

@@ -19,7 +19,7 @@ export class PureNotebookOutputRenderer implements INotebookRendererInfo {
 	public readonly preloads: URI[];
 
 
-	constructor(public readonly id: string, extension: IExtensionDescription, entrypoint: string) {
+	constructor(public readonly id: string, public readonly displayName: string, extension: IExtensionDescription, entrypoint: string) {
 		this.extensionId = extension.identifier;
 		this.extensionLocation = extension.extensionLocation;
 		this.preloads = [joinPath(extension.extensionLocation, entrypoint)];

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

@@ -298,7 +298,7 @@ export class NotebookService extends Disposable implements INotebookService, ICu
 					}));
 
 					if (notebookContribution.entrypoint) {
-						this._notebookRenderers.set(notebookContribution.viewType, new PureNotebookOutputRenderer(notebookContribution.viewType, extension.description, notebookContribution.entrypoint));
+						this._notebookRenderers.set(notebookContribution.viewType, new PureNotebookOutputRenderer(notebookContribution.viewType, notebookContribution.displayName, extension.description, notebookContribution.entrypoint));
 					}
 				}
 			}
@@ -547,6 +547,11 @@ export class NotebookService extends Disposable implements INotebookService, ICu
 
 	registerNotebookRenderer(id: string, renderer: INotebookRendererInfo) {
 		this._notebookRenderers.set(id, renderer);
+		const staticInfo = this.notebookRenderersInfoStore.get(id);
+
+		if (staticInfo) {
+
+		}
 	}
 
 	unregisterNotebookRenderer(id: string) {
@@ -995,8 +1000,8 @@ export class NotebookService extends Disposable implements INotebookService, ICu
 		return this.notebookProviderInfoStore.get(viewType);
 	}
 
-	getContributedNotebookOutputRenderers(mimeType: string): readonly NotebookOutputRendererInfo[] {
-		return this.notebookRenderersInfoStore.getContributedRenderer(mimeType);
+	getContributedNotebookOutputRenderers(viewType: string): NotebookOutputRendererInfo | undefined {
+		return this.notebookRenderersInfoStore.get(viewType);
 	}
 
 	getNotebookProviderResourceRoots(): URI[] {

src/vs/workbench/contrib/notebook/browser/view/renderers/codeCell.ts

@@ -558,7 +558,8 @@ export class CodeCell extends Disposable {
 		const renderInfo = this.notebookService.getRendererInfo(renderId);
 
 		if (renderInfo) {
-			return `${renderId} (${renderInfo.extensionId.value})`;
+			const displayName = renderInfo.displayName !== '' ? renderInfo.displayName : renderInfo.id;
+			return `${displayName} (${renderInfo.extensionId.value})`;
 		}
 
 		return nls.localize('builtinRenderInfo', "built-in");

src/vs/workbench/contrib/notebook/common/notebookCommon.ts

@@ -113,6 +113,7 @@ export interface INotebookMimeTypeSelector {
 
 export interface INotebookRendererInfo {
 	id: string;
+	displayName: string;
 	extensionId: ExtensionIdentifier;
 	extensionLocation: URI,
 	preloads: URI[],

src/vs/workbench/contrib/notebook/common/notebookService.ts

@@ -16,6 +16,7 @@ import { NotebookTextModel } from 'vs/workbench/contrib/notebook/common/model/no
 import { CancellationToken } from 'vs/base/common/cancellation';
 import { NotebookCellTextModel } from 'vs/workbench/contrib/notebook/common/model/notebookCellTextModel';
 import { IDisposable } from 'vs/base/common/lifecycle';
+import { NotebookOutputRendererInfo } from 'vs/workbench/contrib/notebook/common/notebookOutputRenderer';
 
 
 export const INotebookService = createDecorator<INotebookService>('notebookService');
@@ -61,7 +62,9 @@ export interface INotebookService {
 	registerNotebookKernelProvider(provider: INotebookKernelProvider): IDisposable;
 	getContributedNotebookKernels(viewType: string, resource: URI): readonly INotebookKernelInfo[];
 	getContributedNotebookKernels2(viewType: string, resource: URI, token: CancellationToken): Promise<INotebookKernelInfo2[]>;
+	getContributedNotebookOutputRenderers(id: string): NotebookOutputRendererInfo | undefined;
 	getRendererInfo(id: string): INotebookRendererInfo | undefined;
+
 	resolveNotebook(viewType: string, uri: URI, forceReload: boolean, editorId?: string, backupId?: string): Promise<NotebookTextModel | undefined>;
 	getNotebookTextModel(uri: URI): NotebookTextModel | undefined;
 	executeNotebook(viewType: string, uri: URI): Promise<void>;