import type { TPaymentCurrency } from '@blocklet/payment-types';
export { primaryContrastColor } from '../../libs/util';
export declare const INTERVAL_LOCALE_KEY: Record<string, string>;
export declare function countryCodeToFlag(code: string): string;
export declare function formatTokenAmount(unitAmount: string | number | bigint, currency: TPaymentCurrency | null): string;
interface CurrencyOption {
    currency_id: string;
    unit_amount: string;
    custom_unit_amount?: {
        preset?: string;
        presets?: string[];
    } | null;
}
interface PriceWithDynamic {
    pricing_type?: string;
    base_amount?: string;
    unit_amount?: string;
    base_currency?: string;
    currency_id?: string;
    currency_options?: CurrencyOption[];
    price_currency_options?: CurrencyOption[];
}
export declare function getUnitAmountForCurrency(price: PriceWithDynamic | null | undefined, currency: TPaymentCurrency | null): string;
export declare function formatDynamicUnitPrice(price: PriceWithDynamic | null | undefined, currency: TPaymentCurrency | null, exchangeRate: string | null): string | null;
export declare function tSafe(t: (key: string, params?: any) => string, key: string, fallback: string): string;
export declare const whiteTooltipSx: {
    '& .MuiTooltip-tooltip': {
        bgcolor: string;
        color: string;
        border: string;
        borderColor: string;
        borderRadius: string;
        boxShadow: string;
        p: number;
        maxWidth: number;
        fontSize: number;
    };
    '& .MuiTooltip-arrow': {
        color: string;
        '&::before': {
            border: string;
            borderColor: string;
        };
    };
};
export declare function formatTrialText(t: (key: string, params?: Record<string, any>) => string, days: number, interval: string): string;
type TFn = (key: string, params?: Record<string, any>) => string;
export type ItemTypeBadge = 'subscription' | 'topup' | 'oneTime';
interface ItemMeta {
    badge: ItemTypeBadge;
    badgeLabel: string;
    title: string;
    subtitle: string;
}
/**
 * Derive structured badge / title / subtitle for a checkout session header.
 * Works for the "primary product" header above the item list.
 */
export declare function getSessionHeaderMeta(t: TFn, session: any, product: any, items: any[]): ItemMeta;