chore - prevent double markdown parse fyi @mjbvz

src/vs/workbench/contrib/markdown/common/markdownDocumentRenderer.ts

@@ -19,34 +19,24 @@ export async function renderMarkdownDocument(
 	extensionService: IExtensionService,
 	modeService: IModeService,
 ): Promise<string> {
-	const renderer = await getRenderer(text, extensionService, modeService);
-	return marked(text, { renderer });
-}
 
-async function getRenderer(
-	text: string,
-	extensionService: IExtensionService,
-	modeService: IModeService,
-): Promise<marked.Renderer> {
-	let result: Promise<ITokenizationSupport | null>[] = [];
-	const renderer = new marked.Renderer();
-	renderer.code = (_code, lang) => {
-		const modeId = modeService.getModeIdForLanguageName(lang);
-		if (modeId) {
-			result.push(extensionService.whenInstalledExtensionsRegistered().then((): PromiseLike<ITokenizationSupport> | null => {
-				modeService.triggerMode(modeId);
-				return TokenizationRegistry.getPromise(modeId);
-			}));
+	const highlight = (code: string, lang: string, callback: ((error: any, code: string) => void) | undefined): any => {
+		if (!callback) {
+			return code;
 		}
+		extensionService.whenInstalledExtensionsRegistered().then(async () => {
+			let support: ITokenizationSupport | undefined;
+			const modeId = modeService.getModeIdForLanguageName(lang);
+			if (modeId) {
+				modeService.triggerMode(modeId);
+				support = await TokenizationRegistry.getPromise(modeId) ?? undefined;
+			}
+			callback(null, `<code>${tokenizeToString(code, support)}</code>`);
+		});
 		return '';
 	};
 
-	marked(text, { renderer });
-	await Promise.all(result);
-
-	renderer.code = (code, lang) => {
-		const modeId = modeService.getModeIdForLanguageName(lang);
-		return `<code>${tokenizeToString(code, modeId ? TokenizationRegistry.get(modeId)! : undefined)}</code>`;
-	};
-	return renderer;
+	return new Promise<string>((resolve, reject) => {
+		marked(text, { highlight }, (err, value) => err ? reject(err) : resolve(value));
+	});
 }