@aws-amplify/auth/src/foundation/convert/base64url/convertArrayBufferToBase64Url.ts

Auth category of aws-amplify

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

import { base64Encoder } from '@aws-amplify/core/internals/utils';

// https://datatracker.ietf.org/doc/html/rfc4648#page-7

/**
 * Converts an ArrayBuffer to a base64url encoded string
 * @param buffer - the ArrayBuffer instance of a Uint8Array
 * @returns string - a base64url encoded string
 */
export const convertArrayBufferToBase64Url = (buffer: ArrayBuffer): string => {
	return base64Encoder.convert(new Uint8Array(buffer), {
		urlSafe: true,
		skipPadding: true,
	});
};