Set noEmitHelpers to avoid __extends()
Set noEmitHelpers to avoid __extends()

TypeScript creates an `__extends` function which [breaks most of apps in {N}](https://github.com/NativeScript/nativescript-dev-webpack/issues/8).

A simple fix is settings to `noEmitHelpers` to true.
kazemihabib/nativescript-ng2-plugin-seed,kazemihabib/nativescript-ng2-plugin-seed,kazemihabib/nativescript-ng2-plugin-seed