/**
 * Statutory chain BFS — UBO discovery for KYC.
 *
 * From a root IČO, fetch each statutory person, then for each person
 * search ARES for *other* companies where they appear (currently active).
 * Builds a tree of (ico → person → other company) relationships up to
 * a max depth.
 *
 * Heavy on ARES calls — caller should rate-limit / cache aggressively.
 */
import type { AresLike } from './clients.js';
import type { ChainResult } from './types.js';
export interface ChainOptions {
    maxDepth?: number;
    /** Skip persons whose name has fewer than N chars (avoid common-name explosion). */
    minNameLength?: number;
    /** Override the COMMON_SURNAME_THRESHOLD auto-skip cutoff. */
    commonSurnameThreshold?: number;
}
export declare function buildChain(rootIco: string, ares: AresLike, opts?: ChainOptions): Promise<ChainResult>;
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