Re: [fetch] Aborting a fetch (#27)

> I think adding .cancel to Promise could break existing code.

How is that since nobody using Promises these days woul dpass a third callback + nobody believes it's possible to cancel them?


> Could you point to a implementation of tasks you're particularly fond of?

I'm not fond on any particular implementation, all I know is that Tasks manage cancelability in core and by default, I'm sure these have been discussed already, and I'm sure there's need for them otherwise developers would just use Promises.

What I'm not sure about, if it has been even proposed as standard by anyone. So I'll let eventually others suggest the best `Task` based option.

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