import type { WebhookEvent } from "./webhook-events.js";
export * from "./webhook-events.js";
export declare const WEBHOOK_SIGNATURE_HEADER = "modapi-signature";
export declare const WEBHOOK_SECRET_ENV_VAR = "MODAPI_WEBHOOK_SECRET";
/** The signature is missing or does not match the payload. */
export declare class WebhookSignatureError extends Error {
    name: string;
}
/**
 * A webhook delivery. Accepts a Fetch API `Request` (Next.js App Router, Hono,
 * Bun, Workers) or a Node.js request (Express, Next.js Pages Router) with the
 * raw body in `body` or still unread on the stream.
 */
export type WebhookRequest = Request | {
    body?: BodyInit | Uint8Array | string | null | undefined;
    headers: Headers | Record<string, string | string[] | undefined>;
    [Symbol.asyncIterator]?: () => AsyncIterator<Uint8Array | string>;
};
/**
 * Verify a delivery and return the event. `secret` defaults to the
 * MODAPI_WEBHOOK_SECRET environment variable. Throws `WebhookSignatureError`
 * if the signature does not match.
 *
 * The payload is not validated against a schema: an event type or field added
 * to the API later is returned as delivered, never rejected.
 */
export declare function validateWebhook({ request, secret }: {
    request: WebhookRequest;
    secret?: string | undefined;
}): Promise<WebhookEvent>;
/** Return true if `signature` is the HMAC-SHA256 of the raw `payload`. */
export declare function verifyWebhookSignature(payload: Uint8Array | string, signature: string | null | undefined, secret?: string | undefined): Promise<boolean>;
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