"Discover a clever technique for dynamically incorporating the rxjs pipe operator based on a specific condition

Currently, I am attempting to add 2 pipe operators into a pipe function, where the first one should be applied based on a condition, while the second one will always be applied.

This is how it looks without the condition:

getData(query).pipe(setLoding(this.store),tap(//some actions here...))

The setLoading function is an Akita pipe that I would like to apply only if a certain boolean condition is met.

I attempted to use rxjs's iif(), but encountered an error because setLoading does not match the type of SubscribableOrPromise.

Does anyone have alternative suggestions?

angulartypescriptrxjspipelineangular-akita

Answer №1

When using the rxjs iif, you have the ability to write observables conditionally, although it is not meant for working with operators.

If you have an operator like setLoading in your scenario, it cannot be directly used with iif. To utilize setLoading conditionally within a pipe, you will need to implement something along these lines -

getData(query)
.pipe(
  condition ? setLoading(this.store): tap(() => /* perform another action */ )
)

UPDATE:

If you do not wish to take any actions in the else case and execute the tap regardless, you should incorporate the identity operator.

getData(query)
.pipe(
  condition ? setLoading(this.store): identity,
  tap(() => /* perform another action */ )
)

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