import { z } from "zod";
export declare const PromotionSchema: z.ZodObject<{
    type: z.ZodString;
    topic: z.ZodOptional<z.ZodString>;
    title: z.ZodString;
    description: z.ZodString;
    url: z.ZodString;
    metadata: z.ZodOptional<z.ZodRecord<z.ZodString, z.ZodAny>>;
}, z.core.$strip>;
export type Promotion = z.infer<typeof PromotionSchema>;
export type ChoosePromotion = (newPromotion: Promotion, prevPromotion: Promotion) => Promotion;