import type { StripeBackConfig } from '@donotdev/core/server';
/**
 * Change subscription plan function
 *
 * @version 0.1.0
 * @since 0.0.1
 * @author AMBROISE PARK Consulting
 */
export declare function changePlan(billingConfig: StripeBackConfig): import("firebase-functions/https").CallableFunction<{
    userId: string;
    newPriceId: string;
    billingConfigKey: string;
}, any, unknown>;
