/**
 * Constructs `window.KlashaClient` and opens the checkout.
 *
 * The argument order matches the shipped `pay.js` exactly. Nothing is logged —
 * 0.0.x printed the whole argument object, `merchantKey` included, to the
 * browser console.
 */
export declare const callKlashaClient: (klashaArgs: Record<string, any>) => void;