diff --git a/extensions/vscode-api-tests/src/extension.ts b/extensions/vscode-api-tests/src/extension.ts
index 15a15a5960771..aa009116abc9f 100644
--- a/extensions/vscode-api-tests/src/extension.ts
+++ b/extensions/vscode-api-tests/src/extension.ts
@@ -13,14 +13,15 @@
 //
 
 import * as vscode from 'vscode';
-import { URL } from 'url';
-import { TextEncoder, TextDecoder } from 'util';
+
+declare const window: unknown;
+declare const TextEncoder: any;
+declare const TextDecoder: any;
+declare const URL: any;
 
 const textEncoder = new TextEncoder();
 const SCHEME = 'memfs';
 
-declare const window: unknown;
-
 export function activate(context: vscode.ExtensionContext) {
 	if (typeof window !== 'undefined') {	// do not run under node.js
 		const memFs = enableFs(context);