/**
 * @fileoverview WorkUnitSerializer — JSON round-trip serialization for
 * IWorkUnit and IWorkResult payloads.
 *
 * Provides serialize/parse functions for transmitting work units and results
 * over HTTP as JSON strings. All required fields are validated on parse with
 * descriptive error messages indicating which field is invalid or missing.
 *
 * @see Design: Proof of Useful Work Rate Limiting — WorkUnitSerializer
 * @see Requirements 15.1–15.6
 */
import { IWorkResult, IWorkUnit } from '../interfaces/pouw';
/**
 * Serialize an IWorkUnit to a JSON string.
 *
 * Since `inputData` is already base64-encoded (it's a string), this is a
 * straightforward JSON.stringify. The function exists as a named entry point
 * to pair with `parseWorkUnit` and to keep the serialization contract explicit.
 */
export declare function serializeWorkUnit(workUnit: IWorkUnit): string;
/**
 * Parse a JSON string into an IWorkUnit, validating all required fields.
 *
 * @throws {TranslatableBrightChainError} with a descriptive message if the JSON is malformed or
 *   any required field is missing or has the wrong type.
 */
export declare function parseWorkUnit(json: string): IWorkUnit;
/**
 * Serialize an IWorkResult to a JSON string.
 */
export declare function serializeWorkResult(workResult: IWorkResult): string;
/**
 * Parse a JSON string into an IWorkResult, validating all required fields.
 *
 * @throws {TranslatableBrightChainError} with a descriptive message if the JSON is malformed or
 *   any required field is missing or has the wrong type.
 */
export declare function parseWorkResult(json: string): IWorkResult;
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