Really needs a timeout option

This library needs the ability to provide a timeout interval as part of the options object:

fetch('/users', {
  method: 'POST',
  timeout: 1000,
  headers: {
    'Accept': 'application/json',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    name: 'Hubot',
    login: 'hubot',
  })
})

which is then internally assigned to the xhr object xhr.timeout = 1000 (property details here).

I’m having to do this, which feels over-the-top:

function promiseTimeout(ms, promise){

  return new Promise(function(resolve, reject){

    // create a timeout to reject promise if not resolved
    var timer = setTimeout(function(){
        reject(new Error("promise timeout"));
    }, ms);

    promise
        .then(function(res){
            clearTimeout(timer);
            resolve(res);
        })
        .catch(function(err){
            clearTimeout(timer);
            reject(err);
        });
  });
};

promiseTimeout(1000, fetch('https://courseof.life/johndoherty.json'))
   .then(function(cvData){
      alert(cvData);
   })
   .catch(function(){
      alert('request either failed or timedout');
   });

[DinoSourcesRex]

Can you add it to the spec?

[mislav]

Yes you’re doing it right: https://github.com/github/fetch/issues/175#issuecomment-125779262

We can’t add a timeout option since it’s not in the spec.