Merge from vscode 8e0f348413f4f616c23a88ae30030efa85811973 (#6381)

* Merge from vscode 8e0f348413f4f616c23a88ae30030efa85811973

* disable strict null check

src/vs/platform/clipboard/browser/clipboardService.ts

@@ -0,0 +1,49 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { registerSingleton } from 'vs/platform/instantiation/common/extensions';
+import { IClipboardService } from 'vs/platform/clipboard/common/clipboardService';
+import { URI } from 'vs/base/common/uri';
+import { ServiceIdentifier } from 'vs/platform/instantiation/common/instantiation';
+
+export class BrowserClipboardService implements IClipboardService {
+
+	_serviceBrand: ServiceIdentifier<IClipboardService>;
+
+	private _internalResourcesClipboard: URI[] | undefined;
+
+	async writeText(text: string, type?: string): Promise<void> {
+		return navigator.clipboard.writeText(text);
+	}
+
+	async readText(type?: string): Promise<string> {
+		return navigator.clipboard.readText();
+	}
+
+	readTextSync(): string | undefined {
+		return undefined;
+	}
+
+	readFindText(): string {
+		// @ts-ignore
+		return undefined;
+	}
+
+	writeFindText(text: string): void { }
+
+	writeResources(resources: URI[]): void {
+		this._internalResourcesClipboard = resources;
+	}
+
+	readResources(): URI[] {
+		return this._internalResourcesClipboard || [];
+	}
+
+	hasResources(): boolean {
+		return this._internalResourcesClipboard !== undefined && this._internalResourcesClipboard.length > 0;
+	}
+}
+
+registerSingleton(IClipboardService, BrowserClipboardService, true);