Signal

Trigger JS debugger when signal is evaluating its initial value (if when passes at that time)

Log when signal is evaluating its initial value (if when passes at that time)

Execute fn when signal is evaluating its initial value

See also debug methods in com.raquo.airstream.debug.DebuggableObservable

Add a noop observer to this signal to ensure that it's started. This lets you access .now and .tryNow on the resulting StrictSignal.

You can use myStream.toWeakSignal.observe.tryNow() to read the last emitted value from event streams just as well.

Subscribe an external observer to this observable

Trigger JS debugger for emitted events and errors if when passes

Trigger JS debugger for emitted errors (but not events) if when passes

Trigger JS debugger for emitted events (but not errors) if when passes

Trigger JS debugger when the observable starts and stops

Trigger JS debugger when the observable starts

Trigger JS debugger when the observable stops

Log emitted events and errors if when condition passes, using dom.console.log if useJsLogger is true.

Log emitted errors (but not regular events) if when condition passes

Log emitted events (but not errors) if when condition passes, using dom.console.log if useJsLogger is true.

Log when the observable starts and stops

Log when the observable starts

Log when the observable stops

Execute fn on every emitted event or error

Execute fn on every emitted error (but not regular events)

Execute fn on every emitted event (but not error)

Execute callbacks on when the observable starts and stops

Execute callbacks on when the observable starts

Execute callbacks on when the observable stops

Return the observable's topoRank. This does not affect the observable in any way.

Create a new observable that listens to the original, and set the displayName of the new observable. This is different from setDisplayName.

If you say stream.debugWithName("foo").debugLog(), the displayName used by the logger will be "foo" verbatim, whereas if you say stream.setDisplayName("foo").debugLog(), the logger's displayName will be "foo|Debug" – with a suffix – to differentiate it from the "foo" displayName of stream itself.

This is the method that subclasses override to preserve the user's ability to set custom display names.

Create an external observer from a function and subscribe it to this observable.

Note: since you won't have a reference to the observer, you will need to call Subscription.kill() to unsubscribe

value is passed by name, so it will be evaluated whenever the Observable fires. Use it to sample mutable values (e.g. myInput.ref.value in Laminar).

See also: mapToStrict

value is evaluated strictly, only once, when this method is called.

See also: mapTo

Total number of internal and external observers

This method is fired when this observable stops working (listening for parent events and/or firing its own events), that is, when it loses its last Observer (internal or external).

onStop can potentially be called multiple times, the second time being after it has started again (see onStart).

Set the display name for this instance (observable or observer).

• This method modifies the instance and returns this. It does not create a new instance.
• New name you set will override the previous name, if any. This might change in the future. For the sake of sanity, don't call this more than once for the same instance.
• If display name is set, toString will output it instead of the standard type@hashcode string

Override defaultDisplayName instead of this, if you need to.

Convert this observable to a signal of Option[A]. If it is a stream, set initial value to None.