How to interrupt, exit a compose or pipe? : <p>What's the proper way to interrupt a long chain of compose or pipe functions ?</p>

<p>Let's say the chain doesn't need to run after the second function because it found an invalid value and it doesn't need to continue the next 5 functions as long as user submitted value is invalid.</p>

<p>Do you return an undefined / empty parameter, so the rest of the functions just check if there is no value returned, and in this case just keep passing the empty param ?</p>
