import { ZodType, z } from 'zod';
type CleanupFn = (() => void) | void;
export declare class HyperRPCEvent<Ctx, T extends ZodType> {
    eventType: T;
    emitterSetup?: (emit: (x: z.infer<T>) => void, ctx: Ctx) => CleanupFn;
    constructor(eventType: T);
    emitter(setup: (emit: (x: z.infer<T>) => void, ctx: Ctx) => CleanupFn): this;
    filter(fn: (input: z.infer<T>) => Promise<boolean>): void;
}
export {};