@ngrx/component: Separate modules for LetDirective and PushPipe

[markostanimirovic]

Add separate modules for better tree shaking:

• LetModule for LetDirective
• PushModule for PushPipe

An additional change to consider: Deprecate ReactiveComponentModule.

[danielkleebinder]

I would recommend delaying this feature until standalone components, directives and pipes are stable in Angular. In Angular 14.0.0, this feature was already introduced as developer preview (for reference: Angular v14 is now available!). Making the LetDirective and the PushPipe standalone is probably the cleaner solution and more idiomatic looking forward to future Angular releases. Introducing two new modules (LetModule and PushModule) in NgRx 14.x might cause said modules to become deprecated in NgRx 15.x already and thus further complicates the migration process (for developers using NgRx and developers actively working on NgRx).

[markostanimirovic]

Hi @danielkleebinder 👋

We were also thinking of defining PushPipe and LetDirective as standalone. However, all Angular and Angular Material declarables are currently (in v14) exported via NgModules. Because of that, we decided to create granular modules for PushPipe and LetDirective in v14.

If standalone declarables become standard in core Angular packages in the future, we'll also define declarables from @ngrx/component package as standalone.