diff --git a/extensions/typescript/src/features/folderingProvider.ts b/extensions/typescript/src/features/folderingProvider.ts
new file mode 100644
index 00000000000..2020731d61b
--- /dev/null
+++ b/extensions/typescript/src/features/folderingProvider.ts
@@ -0,0 +1,62 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as vscode from 'vscode';
+
+import * as Proto from '../protocol';
+import { ITypeScriptServiceClient } from '../typescriptService';
+
+// TODO: forward declarations for private TS API.
+
+interface TextSpan {
+	start: number;
+	length: number;
+}
+
+interface OutliningSpan {
+	textSpan: TextSpan;
+	hintSpan: TextSpan;
+	bannerText: string;
+	autoCollapse: boolean;
+}
+
+interface OutliningSpansRequestArgs extends Proto.FileRequestArgs { }
+
+interface OutliningSpansResponse extends Proto.Response {
+	body?: OutliningSpan[];
+}
+
+export default class TypeScriptFoldingProvider implements vscode.FoldingProvider {
+	public constructor(
+		private readonly client: ITypeScriptServiceClient
+	) { }
+
+	async provideFoldingRanges(
+		document: vscode.TextDocument,
+		token: vscode.CancellationToken
+	): Promise<vscode.FoldingRangeList | undefined> {
+		if (!this.client.apiVersion.has270Features()) {
+			return;
+		}
+
+		const file = this.client.normalizePath(document.uri);
+		if (!file) {
+			return;
+		}
+
+		const args: OutliningSpansRequestArgs = { file };
+		const response: OutliningSpansResponse = await this.client.execute('outliningSpans', args, token);
+		if (!response || !response.body) {
+			return;
+		}
+
+		return new vscode.FoldingRangeList(response.body.map(span => {
+			const start = document.positionAt(span.textSpan.start);
+			const end = document.positionAt(span.textSpan.start + span.textSpan.length);
+
+			return new vscode.FoldingRange(start.line, end.line);
+		}));
+	}
+}
\ No newline at end of file
diff --git a/extensions/typescript/src/languageProvider.ts b/extensions/typescript/src/languageProvider.ts
index 57d7f7c127d..1c4b9e0361e 100644
--- a/extensions/typescript/src/languageProvider.ts
+++ b/extensions/typescript/src/languageProvider.ts
@@ -125,6 +125,11 @@ export default class LanguageProvider {
 		this.disposables.push(languages.registerRenameProvider(selector, new (await import('./features/renameProvider')).default(client)));
 		this.disposables.push(languages.registerCodeActionsProvider(selector, new (await import('./features/quickFixProvider')).default(client, this.formattingOptionsManager, commandManager, this.diagnosticsManager)));
 		this.disposables.push(languages.registerCodeActionsProvider(selector, new (await import('./features/refactorProvider')).default(client, this.formattingOptionsManager, commandManager)));
+
+		if (workspace.getConfiguration('typescript').get('enableExperimentalFolding', false)) {
+			this.disposables.push(languages.registerFoldingProvider(selector, new (await import('./features/folderingProvider')).default(client)));
+		}
+
 		this.registerVersionDependentProviders();
 
 		const cachedResponse = new CachedNavTreeResponse();