JSFiddle - React, Tailwind, and code Playground

JavaScript

// Code goes here

function createRequest(type, url, payload) {
  const options = { headers: {
    "Content-Type": "application/json",
    "x-request-id": '...',
    "x-sender-id": "mysender"
  },
                   method: 'POST',
                   body: JSON.stringify(payload),
                   mode: 'no-cors',
                   cache: 'no-cache'
                  };
  return new Request(url, options);
}

// -----------------------------
// a simple test
    const request = createRequest('post', '/check', {test: 'where are my headers?'});


console.log(request);