Is there any support similar to Typescript Decorators?

[akkinenirajesh]

Infact what I am looking for is a way where I can put Java annotations on classes fields etc,
and then be able to control whats gets generated in Typescript.

But starting point will be to check if Decorators are already supported, then may be that can be used to solve the current requirement.

[renaudpawlak]

Decorators are partially supported... more info there: #43. This feature is not finished yet and was developed for an Angular 2 PoC. More support should be available in next releases.

From what you say first, it looks like you are looking for some sort of transpilation plugin system...