import type { IsoPriceShape } from '../../domain.objects/IsoPriceShape';
/**
 * .what = type guard for IsoPriceShape format
 * .why = validates objects have the required shape properties
 *
 * required:
 * - amount: bigint
 * - currency: string
 *
 * optional:
 * - exponent: string (IsoPriceExponent value)
 *
 * valid examples:
 * - { amount: 5037n, currency: 'USD' }
 * - { amount: 3n, currency: 'USD', exponent: 'micro.x10^-6' }
 *
 * invalid examples:
 * - { amount: 5037, currency: 'USD' } (number instead of bigint)
 * - { amount: 5037n } (currency absent)
 * - 'USD 50.37' (string instead of object)
 */
export declare const isIsoPriceShape: {
    (value: unknown): value is IsoPriceShape<string>;
    /**
     * .what = assertion function that throws on invalid input
     * .why = enables fail-fast validation with helpful error messages
     */
    assure(value: unknown): asserts value is IsoPriceShape<string>;
};