import { NumberFormatInternal, NumberFormatOptions } from '../types/number';
/**
 * https://tc39.es/ecma402/#sec-setnumberformatunitoptions
 */
export declare function SetNumberFormatUnitOptions(nf: Intl.NumberFormat, options: NumberFormatOptions | undefined, { getInternalSlots, }: {
    getInternalSlots(nf: Intl.NumberFormat): NumberFormatInternal;
}): void;
