问如何在fetch中修复或解决这个内存泄漏问题？

EN

const state = {
    response: {},
    count: 0
  },
  uri = 'https://upload.wikimedia.org/wikipedia/commons/3/3d/LARGE_elevation.jpg';

!function poll() {
  const controller = new AbortController(),
    signal = controller.signal;
  // using this you can cancel it and destroy it completly.
  fetch(uri, { signal })
    // this is triggered as soon as the header data is transfered
    .then(response => {
      /**
       * Continung without doing anything on response
       * fills the memory.
       *
       * Chrome downloads the file in the background and 
       * seems to wait for the use of a call on the
       * response.fx() or an abort signal.
       * 
       * This seems to be a bug or a small design mistake
       * if response is never used.
       *
       * If response.json(), .blob(), .body() or .text() is
       * called the memory will be free'd.
       */
      return response.blob();
    }).then((binary) => {
      // store data to a var
      return state.response = binary;
    }).catch((err) => {
      console.error(err);
    }).finally(() => {
      // and start the next poll
      console.log(++state.count, state.response.type, (state.response.size / 1024 / 1024).toFixed(2)+' MB');
      requestAnimationFrame(poll);
      // console.dir(state.response);
      
      // reduces memory a bit more
      controller.abort();
    })
}()