import type { ExecResult, ToolCallInfo, TurnInfo } from '../types/index.js';
/**
 * Validate the source-neutral executor result contract at process/cache
 * boundaries. Provider payloads and custom executors are untrusted input; a
 * malformed metric must fail the sample instead of entering a report.
 */
export declare function executorResultValidationError(value: unknown): string | undefined;
export declare function parseExecResult(value: unknown): ExecResult | null;
/**
 * Canonicalize every execution trace after structural validation. This keeps
 * programmatic/custom executors and restored caches in the same comparison
 * namespace as built-in provider adapters.
 */
export declare function normalizeExecResultToolIdentities(result: ExecResult): ExecResult;
export declare function isValidTurnInfo(value: unknown): value is TurnInfo;
export declare function isValidToolCallInfo(value: unknown): value is ToolCallInfo;
export declare function isValidMockStats(value: unknown): boolean;