import type { Result } from '../types/result.js';
import { BaseError } from '../error/mod.js';
export declare class Base64EncodingError extends BaseError {
    readonly _tag = "Base64EncodingError";
}
export declare class Base64DecodingError extends BaseError {
    readonly _tag = "Base64DecodingError";
}
/**
 * Encodes a string to URL-safe base64
 *
 */
export declare function encodeBase64<Encoded>(input: string): Result<Base64EncodingError, Encoded>;
/**
 * Decodes a URL-safe base64 string
 *
 */
export declare function decodeBase64(encoded: string): Result<Base64DecodingError, string>;
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