/**
 * Base 64 encode the given input string, but safely.
 *
 * Why using btoa() directly might not always work:
 * btoa() expects a "binary string" where each character is represented by a
 * single byte (0-255). Modern JavaScript strings, however, are encoded in
 * UTF-16 and can contain characters that require more than one byte (i.e.,
 * characters outside the Latin-1 range, such as those with code points greater
 * than 255).
 */
declare function safeBtoa(input: string): string;

export { safeBtoa };