/**
 * Encode a Uint8Array into a base64 string in both Node and browser environments.
 */
export declare function encodeUint8ArrayToBase64(data: Uint8Array): string;
/**
 * Decode a base64 string into a Uint8Array in both Node and browser environments.
 */
export declare function decodeBase64ToUint8Array(value: string): Uint8Array;