/**
 * AI quality evaluator for implementation comparisons.
 *
 * Runs a single-turn, non-agentic AI invocation via {@link AIService}
 * to blindly evaluate two implementations. Randomizes presentation
 * order to prevent position bias.
 *
 * @module
 */
import type { AIService } from '../ai/service.js';
import type { ImplementationEvaluation } from './types.js';
/**
 * Evaluate two implementations blindly using an AI model.
 *
 * Randomizes which implementation is "Plan A" vs "Plan B" to prevent
 * position bias, then maps scores back to the original labels.
 *
 * @param task - The original task description
 * @param withDocsImpl - Implementation log from the "with docs" run
 * @param withoutDocsImpl - Implementation log from the "without docs" run
 * @param aiService - AI service instance for subprocess management
 * @param model - Model to use for evaluation
 * @param debug - Enable debug logging
 * @returns Evaluation result, or null if evaluation fails
 */
export declare function evaluateImplementations(task: string, withDocsImpl: string, withoutDocsImpl: string, aiService: AIService, model?: string, debug?: boolean): Promise<ImplementationEvaluation | null>;
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