import type { CompanySearchResult } from './companySearch.types';
/**
 * Normalizes a registration number so values from the legal entity and from a search
 * provider can be compared robustly: case-insensitive, ignoring whitespace differences
 * (`12345678`, ` 12345678 ` and `1234 5678` all normalize the same way).
 */
export declare const normalizeRegistrationNumber: (registrationNumber: string) => string;
/**
 * Whether two registration numbers refer to the same registration, tolerating case and
 * whitespace differences. Two absent values never match.
 */
export declare const isMatchingRegistrationNumber: (registrationNumber: string | undefined, otherRegistrationNumber: string | undefined) => boolean;
/**
 * Finds the search result that refers to the same company as the legal entity, matching on
 * registration number. Returns `undefined` when no result matches and when more than one
 * does: applying provider data requires a single, unambiguous match.
 */
export declare const findMatchingCompanySearchResult: (results: readonly CompanySearchResult[] | undefined, registrationNumber: string | undefined) => CompanySearchResult | undefined;