Handling saga IO from within callbacks

Yielding a call to a function that is using a callback to run its post execution behavior: yield apply(someObject, someFunction)

Seems I can’t yield put from someFunction since the callback isn’t a generator. How can I dispatch an action from that callback?

[yelouafi]

addEventListener calls its callback with the event as a first parameter. cps’s callback is called with the event as a first argument by addEventListener, since cps expects an error first argument. it treats the event as an error.

I’d opt for your first solution but would remove the event listener after the promise is resolved

const waitForEvent = (elm, eventType) => {
  return new Promise(resolve => {
    const cb = e => {
      resolve(e)
      elm.removeEventListener(eventType, cb)
    }
    elm.addEventListener(eventType, cb)
  })
}

[floydwch]

Hi @yelouafi !

Thanks for your awesome work, but I have a question here: how to remove listeners in the automatically canceled race effects?