Unfortunately it is not usable at all

[montella1507]

In real angular APP, you do not use http observable directly, you want to use real data = TRUE/FALSE.

So if this should have been usable, you would have added support for TRUE/FALSE direct binding. :-(

[ngBusy]="booleanValue"

in normal production ready application, your components have never ever access to services, they have theirs INPUTs, like [loading]="value" and it is Boolean and it is taken from store (ngrx/redux anything).

From your services, you will just update boolean value in the store (for example with @ngrx/effects, or in normalne subscriptions).

Access services and subscriptions directly in your component is bad behavior and i think not to support it is your wish.