fixes(#3620)

[haverchuck]

Issue #, if available:
fixes(#3620)

Description of changes:
This will allow users to use the strict template check option for Angular AOT compilation.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[tjleing]

The changes definitely look good. Just recording my testing experience here before I go...

It took me a while, but I got the changes to be included correctly and it looks like it does in fact fix the issue with protected variables not being accessible. However, I was still unable to get the angular project to compile with AOT for two reasons:

1. rxjs. error TS2307: Cannot find module 'rxjs/Subject', in import { Subject } from 'rxjs/Subject'; -- it looks like in rxjs version 6, it's just import { Subject } from 'rxjs';. I tried pinning rxjs to a lower version, but Angular requires at least rxjs 5.6.0-forward-compat.0, which still gives the Cannot find module 'rxjs/Subject' errors (plus some more, to boot).

2. @ViewChild. The error here was An argument for 'opts' was not provided -- in Angular 8, @ViewChild requires two parameters instead of one, also passing an object like {static: false}. I feel like the previous problem might just be because of a versioning error or something, but this one I'm pretty sure will need to be fixed before Angular 8 AOT support at least.

[tjleing]

Since it fixes the problem under discussion, I'll go ahead and approve it. But be sure to read the comment! :)

[antoinebrault]

any ETA for the merge ?

[ericclemmons]

Conflicts need to be resolved & we should validate that this resolves #4681 as well.

[dsoegijono]

@haverchuck Any chance of updating this?

[sammartinez]

Closing pull request as issue was addressed

[github-actions]

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