import type { WebhookHandler } from '../handler.js';
interface ExpressLike {
    method?: string;
    headers: Record<string, string | string[] | undefined>;
    body?: unknown;
}
interface ExpressResLike {
    status: (code: number) => ExpressResLike;
    set: (header: string, value: string) => ExpressResLike;
    send: (body?: string) => unknown;
}
export type ExpressMiddleware = (req: ExpressLike, res: ExpressResLike) => Promise<void>;
/**
 * mount with `app.post('/webhook', expressAdapter(tg.webhookHandler({ ... })))`.
 * requires `express.json()` body parser registered before this route
 */
export declare function expressAdapter(handler: WebhookHandler): ExpressMiddleware;
export {};
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