| /** | |
| * Calculates the byte length of a base64 encoded string. | |
| * @param {string} string Base64 encoded string | |
| * @returns {number} Byte length | |
| */ | |
| export function length(string: string): number; | |
| /** | |
| * Encodes a buffer to a base64 encoded string. | |
| * @param {Uint8Array} buffer Source buffer | |
| * @param {number} start Source start | |
| * @param {number} end Source end | |
| * @returns {string} Base64 encoded string | |
| */ | |
| export function encode(buffer: Uint8Array, start: number, end: number): string; | |
| /** | |
| * Decodes a base64 encoded string to a buffer. | |
| * @param {string} string Source string | |
| * @param {Uint8Array} buffer Destination buffer | |
| * @param {number} offset Destination offset | |
| * @returns {number} Number of bytes written | |
| * @throws {Error} If encoding is invalid | |
| */ | |
| export function decode(string: string, buffer: Uint8Array, offset: number): number; | |
| /** | |
| * Tests if the specified string appears to be base64 encoded. | |
| * @param {string} string String to test | |
| * @returns {boolean} `true` if it appears to be base64 encoded, otherwise false | |
| */ | |
| export function test(string: string): boolean; | |