Release Notes

What changed in each release of @remotex-labs/xobservable.

v1.1.0

Disposable subscriptions: every unsubscribe function now implements Disposable, so a subscription can be bound with a using declaration and torn down automatically when its scope exits.

{
    using sub = source.subscribe((value) => console.log(value));
    source.next(1);
} // sub is disposed here - the subscription is torn down automatically

Added

• UnsubscribeType is now (() => void) & Disposable: the function returned by subscribe exposes Symbol.dispose and works with using declarations. See Automatic cleanup with using.
• New TeardownType export: the zero-argument cleanup a handler may return from the Observable constructor.

Changed

• Unsubscribe functions are idempotent: calling them more than once (or disposing after unsubscribing) runs the teardown at most once. See Subscribing.
• The Observable<T> constructor handler is now typed as (observer) => TeardownType | void instead of returning an UnsubscribeType.
• BehaviorSubject.subscribe on a completed subject returns a disposable no-op instead of a plain function, so using works there too.

Earlier releases

• v1.0.0 - initial release (archived docs).

See also

• Getting Started
• Observable