import type { BuiltInHookDefinition } from "../types.ts";
/**
 * Minimal interface for the recovery engine dependency.
 * Avoids circular dependency on the full engine type.
 */
export interface RecoveryEngineLike {
    recover(sessionID: string, error: unknown, category?: string): Promise<{
        recovered: boolean;
        message?: string;
    }>;
}
/**
 * Creates the empty-response-detector built-in hook.
 *
 * Intercepts all tool execution results and detects outputs that are
 * empty or contain only whitespace (fewer than 5 meaningful characters).
 * Delegates to the recovery engine for chain-based recovery. Falls back
 * to direct injection when the engine does not fully recover.
 *
 * @param engine - Recovery engine dependency
 * @returns A configured BuiltInHookDefinition
 */
export declare function createEmptyResponseDetectorHook(engine: RecoveryEngineLike): BuiltInHookDefinition;
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