useFetch.js

  var useFetch = function (request) {
    var match = React.useState(function () {
      return /* Loading */ 0;
    });
    var setState = match[1];
    React.useEffect(
      function () {
        fetchAndDecode(request).then(function (result) {
          return Promise.resolve(
            Curry._1(setState, function (param) {
              return /* Complete */ [result];
            })
          );
        });
      },
      [request]
    );
    return match[0];
  };