@unchainedshop/plugins/src/payment/datatrans-v2/api/cancel.ts

Because of a Typescript issue with upstream "postfinancecheckout", the Postfinance plugin has been disabled from transpilation, import the source ts files from src and enable node_module tsc or copy over the src/payment/postfinance-checkout to your projec

import { FetchDatatransFn, CancelRequestPayload, CancelResponse } from './types.js';

export default async function cancel({
  transactionId,
  ...payload
}: CancelRequestPayload): Promise<CancelResponse> {
  const reqBody = payload;
  const { fetchDatatrans }: { fetchDatatrans: FetchDatatransFn } = this;
  const result = await fetchDatatrans(`/v1/transactions/${transactionId}/cancel`, reqBody);
  if (result.status === 204) return true;
  const json = await result.json();
  return json;
}