diff --git a/extensions/typescript/src/features/workspaceSymbolProvider.ts b/extensions/typescript/src/features/workspaceSymbolProvider.ts
index a25f2a9e3a2..b344f5498ce 100644
--- a/extensions/typescript/src/features/workspaceSymbolProvider.ts
+++ b/extensions/typescript/src/features/workspaceSymbolProvider.ts
@@ -24,7 +24,8 @@ function getSymbolKind(item: Proto.NavtoItem): SymbolKind {
 export default class TypeScriptWorkspaceSymbolProvider implements WorkspaceSymbolProvider {
 	public constructor(
 		private client: ITypeScriptServiceClient,
-		private modeId: string) { }
+		private modeIds: string[]
+	) { }
 
 	public async provideWorkspaceSymbols(search: string, token: CancellationToken): Promise<SymbolInformation[]> {
 		// typescript wants to have a resource even when asking
@@ -34,14 +35,14 @@ export default class TypeScriptWorkspaceSymbolProvider implements WorkspaceSymbo
 		const editor = window.activeTextEditor;
 		if (editor) {
 			const document = editor.document;
-			if (document && document.languageId === this.modeId) {
+			if (document && this.modeIds.indexOf(document.languageId) >= 0) {
 				uri = document.uri;
 			}
 		}
 		if (!uri) {
 			const documents = workspace.textDocuments;
 			for (const document of documents) {
-				if (document.languageId === this.modeId) {
+				if (this.modeIds.indexOf(document.languageId) >= 0) {
 					uri = document.uri;
 					break;
 				}
diff --git a/extensions/typescript/src/typescriptMain.ts b/extensions/typescript/src/typescriptMain.ts
index a901e51fb09..91f6780b2cd 100644
--- a/extensions/typescript/src/typescriptMain.ts
+++ b/extensions/typescript/src/typescriptMain.ts
@@ -334,10 +334,10 @@ class LanguageProvider {
 		this.toUpdateOnConfigurationChanged.push(implementationCodeLensProvider);
 		this.disposables.push(languages.registerCodeLensProvider(selector, implementationCodeLensProvider));
 
-		for (const modeId of this.description.modeIds) {
-			this.disposables.push(languages.registerWorkspaceSymbolProvider(new (await import('./features/workspaceSymbolProvider')).default(client, modeId)));
+		this.disposables.push(languages.registerWorkspaceSymbolProvider(new (await import('./features/workspaceSymbolProvider')).default(client, this.description.modeIds)));
 
-			if (!this.description.isExternal) {
+		if (!this.description.isExternal) {
+			for (const modeId of this.description.modeIds) {
 				this.disposables.push(languages.setLanguageConfiguration(modeId, {
 					indentationRules: {
 						// ^(.*\*/)?\s*\}.*$