v3 api

[n1ru4l]

useAsyncEffect(function * (run) {
  const { signal, abort } = new AbortController();
  const result = yield* run(
    fetch("/resource", { signal }).then(res => res.json()),
    () => abort()
  );
  setState(result);
}, [])

[n1ru4l]

useAsyncEffect(function * (run) {
  
  const callbackOperation = (url, { method = "GET" } = {}) => (callback) => {
    const request = new XMLHttpRequest();
    request.responseType = "json";
    request.addEventListener("load", () => {
       callback(null, request.response)
    });
    request.addEventListener("error", err => {
      callback(err, null)
    });
    request.open(method, url);
    request.send();
    return () => request.abort();
  }

  const result = yield* run(
    callbackOperation("/resource")
  );
  setState(result);
})