delegate to opener service, #66741

src/vs/workbench/api/node/extHostWindow.ts

@@ -7,6 +7,7 @@ import { Event, Emitter } from 'vs/base/common/event';
 import { ExtHostWindowShape, MainContext, MainThreadWindowShape, IMainContext } from './extHost.protocol';
 import { WindowState } from 'vscode';
 import { URI } from 'vs/base/common/uri';
+import { Schemas } from 'vs/base/common/network';
 
 export class ExtHostWindow implements ExtHostWindowShape {
 
@@ -37,6 +38,9 @@ export class ExtHostWindow implements ExtHostWindowShape {
 	}
 
 	openUri(uri: URI): Promise<boolean> {
+		if (uri.scheme === Schemas.command) {
+			return Promise.reject(`Invalid scheme '${uri.scheme}'`);
+		}
 		return this._proxy.$openUri(uri);
 	}
 }