> Situation where types are important in other frameworks is JS part not templates part. Could you give an example where typing is import purely in component's

> Situation where types are important in other frameworks is JS part not templates part. Could you give an example where typing is import purely in component's return value? You will lose type-safety when composing components in template-based frameworks. It is jsx part where types are most important. Instead of getting runtime errors because you passed wrong props you get instant feedback from tsserver and compile error.