Fix listener fails when array value in state is undefined

tur-nr / polymer-redux

Polymer bindings for Redux.

https://tur-nr.github.io/polymer-redux

MIT License

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Closed cvanleeuwen closed 8 years ago

cvanleeuwen commented 8 years ago

I found an issue in the calculation of splices; namely when a statePath points to redux state which is not (yet) defined, calling:

Polymer.ArraySplice.calculateSplices(undefined, previous);

will throw.