declare module 'stripe-search-beta' {
  namespace Stripe {
    /**
     * Interface encapsulating the various crypto computations used by the library,
     * allowing pluggable underlying crypto implementations.
     */
    export interface CryptoProvider {
      /**
       * Computes a SHA-256 HMAC given a secret and a payload (encoded in UTF-8).
       * The output HMAC should be encoded in hexadecimal.
       *
       * Sample values for implementations:
       * - computeHMACSignature('', 'test_secret') => 'f7f9bd47fb987337b5796fdc1fdb9ba221d0d5396814bfcaf9521f43fd8927fd'
       * - computeHMACSignature('\ud83d\ude00', 'test_secret') => '837da296d05c4fe31f61d5d7ead035099d9585a5bcde87de952012a78f0b0c43
       */
      computeHMACSignature: (payload: string, secret: string) => string;
    }
  }
}