pagePool.process(fn) doesn't propagate errors in fn

[zenflow]

If an error is thrown in the function you pass to .process(), it get's swallowed and disappears.

I was pretty confused at what was going on before I realized this!

If pagePool.process encounter's an error calling fn, it should propagate the error (i.e. re-throw it) so it can be handled higher up the call stack.

Thanks for the neat package btw :)