/**
 * Unified lookup result shape — mirrors {@link ValidationResult} ok/code/message contract
 * without document-specific success fields (e.g. `format`).
 * @see docs/LIBRARY-API.md — Lookup list getters
 */
type LookupErrorCode = 'NOT_FOUND' | 'INVALID_FORMAT' | 'INVALID_INPUT';
type LookupResult<T> = {
    ok: true;
    value: T;
} | {
    ok: false;
    code: LookupErrorCode;
    message: string;
};
declare function lookupFound<T>(value: T): LookupResult<T>;
declare function lookupNotFound(message: string): LookupResult<never>;
declare function lookupInvalidInput(message: string): LookupResult<never>;
declare function lookupInvalidFormat(message: string): LookupResult<never>;
/** Unwrap v1.x `get*PorCodigo` compatibility — returns `undefined` on any failure. */
declare function unwrapLookupValue<T>(result: LookupResult<T>): T | undefined;
declare function isLookupNotFound<T>(result: LookupResult<T>): result is {
    ok: false;
    code: 'NOT_FOUND';
    message: string;
};

export { type LookupErrorCode as L, type LookupResult as a, lookupInvalidFormat as b, lookupInvalidInput as c, lookupNotFound as d, isLookupNotFound as i, lookupFound as l, unwrapLookupValue as u };