diff --git a/extensions/html-language-features/server/src/modes/javascriptMode.ts b/extensions/html-language-features/server/src/modes/javascriptMode.ts
index a17cd4c839b..01e0b381d11 100644
--- a/extensions/html-language-features/server/src/modes/javascriptMode.ts
+++ b/extensions/html-language-features/server/src/modes/javascriptMode.ts
@@ -127,7 +127,8 @@ export function getJavaScriptMode(documentRegions: LanguageModelCache<HTMLDocume
 		async doResolve(document: TextDocument, item: CompletionItem): Promise<CompletionItem> {
 			const jsDocument = jsDocuments.get(document);
 			const jsLanguageService = await host.getLanguageService(jsDocument);
-			let details = jsLanguageService.getCompletionEntryDetails(jsDocument.uri, item.data.offset, item.label, undefined, undefined, undefined);
+			// @ts-expect-error until 4.3 protocol update
+			let details = jsLanguageService.getCompletionEntryDetails(jsDocument.uri, item.data.offset, item.label, undefined, undefined, undefined, undefined);
 			if (details) {
 				item.detail = ts.displayPartsToString(details.displayParts);
 				item.documentation = ts.displayPartsToString(details.documentation);