import type { WebhookHandler } from '../handler.js';
interface KoaContextLike {
    method: string;
    headers: Record<string, string | string[] | undefined>;
    request: {
        body?: unknown;
    };
    status: number;
    body: unknown;
    set: (header: string, value: string) => void;
}
export type KoaMiddleware = (ctx: KoaContextLike) => Promise<void>;
/**
 * pair with `koa-bodyparser` (or any json middleware). `app.use(koaAdapter(tg.webhookHandler()))`
 */
export declare function koaAdapter(handler: WebhookHandler): KoaMiddleware;
export {};
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