import type { WebhookVerifier, VerifyOptions } from './common.js';
export interface Sha1Verifier extends WebhookVerifier {
    type: 'sha1Verifier';
}
export declare const verifySignature: ({ payload, secret, signature, }: {
    payload: string | Record<string, unknown>;
    secret: string;
    signature: string;
}) => boolean;
/**
 * SHA1 HMAC Payload Verifier
 *
 * Based on Vercel's webhook payload verification
 * @see https://vercel.com/docs/api#integrations/webhooks/securing-webhooks
 */
export declare function sha1Verifier(_options?: VerifyOptions): Sha1Verifier;
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