@unchainedshop/plugins/src/payment/datatrans-v2/api/validate.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, ValidateRequestPayload, ValidateResponse } from './types.js';

export default async function validate(payload: ValidateRequestPayload): Promise<ValidateResponse> {
  const { fetchDatatrans }: { fetchDatatrans: FetchDatatransFn } = this;

  const reqBody = {
    ...payload,
  };

  const result = await fetchDatatrans(`/v1/transactions/validate`, reqBody);
  const json = await result.json();
  return json;
}