| /** |
| * 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; |
