observe-component.ts

import { Component, Input, OnInit, OnDestroy } from "@angular/core";
import { debounceTime, distinctUntilChanged, switchMapTo, takeUntil } from "rxjs/operators";
import { observe } from "rxjs-observe";

@Component({
  selector: "some-component",
  template: "<span>Some useless component that writes to the console</span>"
})
class SomeComponent implements OnInit, OnDestroy {
  @Input() public name: string;
  constructor() {
    const { observables, proxy } = observe(this as SomeComponent);
    observables.ngOnInit.pipe(
      switchMapTo(observables.name),
      debounceTime(400),
      distinctUntilChanged(),
      takeUntil(observables.ngOnDestroy)
    ).subscribe(value => console.log(value));
    return proxy;
  }
  ngOnInit() {}
  ngOnDestroy() {}
}

Hmm ... implementation based on rxjs-observe looks really better. But why do you make presentation component tightly coupled with the store? The component becomes hard to reuse.