[Collector] support export {Class, Function, ...}

[vicb]

Currently the collector does not support this use case:

class MyClass {}
function myFunc() {}

export {MyClass, myFunc}

see PR #13470 that has a failing test and a TODO.

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}