import { NeuromcpConfig } from '../config.js';
import { Logger } from '../observability/logger.js';
import { RerankProvider } from './types.js';

/**
 * Build the relevance reranker from config, mirroring
 * createEmbeddingProvider's cascade — with one deliberate difference: the
 * reranker is OPTIONAL. On 'none' (default) or when the model is unavailable
 * under 'auto', we return null so search degrades to plain RRF order. Only an
 * explicit 'onnx' request with a missing model throws (loud misconfiguration).
 */
declare function createRerankProvider(config: NeuromcpConfig, logger: Logger): Promise<RerankProvider | null>;

export { createRerankProvider };