azuredatastudio/extensions/github-browser/src/sha1.ts

/*---------------------------------------------------------------------------------------------
 *  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;
			}
		}
	}
}