export declare const Base64EncodedRegex: RegExp;
/**
 * Encodes a string to base64 format
 *
 * @param data - The string to be encoded to base64
 * @returns The base64 encoded string
 */
export declare function safeBase64Encode(data: string): string;
/**
 * Decodes a base64 string back to its original format
 *
 * @param data - The base64 encoded string to be decoded
 * @returns The decoded string in UTF-8 format
 */
export declare function safeBase64Decode(data: string): string;
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