TypeScript version

[minedeljkovic]

TypeScript 2.0 is supporting disjoint union types. This is essential to support statically checked elmish architecture.

Pros

• TypeScript is more strict than Flow with tuple type, which is very important since tuple is most often a result type of update function. Not true since Flow 0.32
• Flow has multiple issues with object spread/rest

Cons

• TypeScript still does not support object rest/spread operator, but it's being worked on at the moment
• Inability to use babel-plugin-tcomb for free, for runtime introspection.