/**
 * 3-layer fallback parser for judge LLM responses.
 *
 * Layer 1: Strict JSON.parse of full response
 * Layer 2: Extract JSON object via regex (handles markdown code blocks, trailing text)
 * Layer 3: Extract score/reasoning via text patterns (last resort)
 *
 * CRITICAL: Never default to pass on parse failure. Parse failure = error grade.
 */
/** Parsed judge response with reasoning and score. */
export interface ParsedJudgeResponse {
    readonly reasoning: string;
    readonly score: 1 | 2 | 3 | 4;
    readonly rawText: string;
}
export interface JudgeParseError {
    readonly success: false;
    readonly rawText: string;
    readonly error: string;
}
export type JudgeParseResult = {
    readonly success: true;
    readonly parsed: ParsedJudgeResponse;
} | JudgeParseError;
/**
 * Maps a 4-point judge score to a GradeResult-compatible score.
 * Score 1 → 0.25, Score 2 → 0.50, Score 3 → 0.75, Score 4 → 1.00
 */
export declare function judgeScoreToGradeScore(score: 1 | 2 | 3 | 4): number;
/**
 * Default pass threshold for LLM judge graders.
 * Score >= 3 (0.75) = pass.
 */
export declare const DEFAULT_JUDGE_PASS_THRESHOLD = 0.75;
export declare function parseJudgeResponse(text: string): JudgeParseResult;
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