Merge from vscode 2cd495805cf99b31b6926f08ff4348124b2cf73d

extensions/github-browser/src/sha1.ts

@@ -0,0 +1,29 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+const textDecoder = new TextDecoder();
+const textEncoder = new TextEncoder();
+
+declare let WEBWORKER: boolean;
+
+export async function sha1(s: string | Uint8Array): Promise<string> {
+	while (true) {
+		try {
+			if (WEBWORKER) {
+				const hash = await globalThis.crypto.subtle.digest({ name: 'sha-1' }, typeof s === 'string' ? textEncoder.encode(s) : s);
+				// Use encodeURIComponent to avoid issues with btoa and Latin-1 characters
+				return globalThis.btoa(encodeURIComponent(textDecoder.decode(hash)));
+			} else {
+				return (await import('crypto')).createHash('sha1').update(s).digest('base64');
+			}
+		} catch (ex) {
+			if (ex instanceof ReferenceError) {
+				(global as any).WEBWORKER = false;
+			}
+		}
+	}
+}