import type { GraderFn, JudgeCallFn } from "../../config/types.js";
/** Options for the `llmClassify` LLM-as-judge grader. Requires at least 2 categories. */
export interface LlmClassifyOptions {
    /** Categories to classify into. Map of category name to description. Must have at least 2 entries. */
    readonly categories: Readonly<Record<string, string>>;
    /** Additional instruction for the judge beyond the category descriptions. */
    readonly criteria?: string | undefined;
    /** Override the judge function from config for this grader only. */
    readonly judge?: JudgeCallFn | undefined;
}
/**
 * Creates a grader that classifies agent output into categories using an LLM judge.
 *
 * Expected value: `expected.metadata.classification` (string matching a category key).
 * Pass condition: Judge's classification matches expected classification.
 * When no expected classification is set, the grader always passes (classification-only mode
 * — useful for labeling output without asserting a specific category).
 * Score: 1.0 for exact match, 0.0 for mismatch.
 *
 * @example
 * ```ts
 * // Assert a specific classification
 * llmClassify({
 *   categories: {
 *     helpful: "The response directly answers the user's question",
 *     partial: "The response partially addresses the question",
 *     unhelpful: "The response does not address the question",
 *   },
 * })
 *
 * // Classification-only (always passes, label in metadata)
 * // Omit expected.metadata.classification on the case
 * ```
 */
export declare function llmClassify(options: LlmClassifyOptions): GraderFn;
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