Undefined is not a Function

"Undefined is Not a Function" Probably the most frustrating error message in all web development. Somewhere your code went wrong, but where? I for one have spent hours tracking them down and I don't enjoy it one bit. Especially if it is the result of a set of call backs that only cause a problem if they execute in a specific order!

What if you could never see that again? Would that make your day? Your Week, how about your Year! Well in Elm it never happens really!

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