Support withCredentials in useEventSource() #229
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If you pass an object as init the hook will call open and immediately close every render because the init object is a by-reference dependency of the useEffect. MDN currently only documents one possible option: withCredentials: boolean;.
In this PR I just handle withCredentials specially. An alternative would be to just remove init from the dependency array because changing it after creating the EventSource doesn't make sense. Another possible solution is to use JSON.stringify() outside the useEffect and JSON.parse() inside the useEffect.