import type { CslItem } from "../../core/csl-json/types.js";
import type { CheckResult } from "./types.js";
export interface CheckConfig {
    email?: string;
    pubmed?: {
        email?: string;
        apiKey?: string;
    };
    metadata?: boolean;
}
/**
 * Check a single reference against external sources for status changes.
 *
 * @param item - The CSL-JSON item to check
 * @param config - Optional config for API credentials
 * @returns Check result with findings
 */
export declare function checkReference(item: CslItem, config?: CheckConfig): Promise<CheckResult>;
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