/**
 * encodeBase64
 *
 * Encodes a Uint8Array into a base64 string.
 *
 * @param {Uint8Array} uint8Array - The Uint8Array to encode.
 * @returns {string} The base64 encoded string.
 */
export declare const encodeBase64: (uint8Array: Uint8Array) => string;
/**
 * Decodes a base64 string into a Uint8Array.
 *
 * @param {string} base64String - The base64 string to decode.
 * @returns {Uint8Array} The decoded Uint8Array.
 */
export declare const decodeBase64: (base64String: string) => Uint8Array;
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