[spraak]

You might check out ReasonML. There is even a blessed ReasonReact

[thoradam]

ReasonML isn't pure FP.

[jasim]

Purity is not an end unto itself.

[Tehnix]

Immutability and purity by default goes a long way to remove a lot of headaches. I could settle for immutability, but it seems ReasonML mixes things a bit.