[feature request] Add coditional rxjs operator:

[endlacer]

I would request a RXJS operator that is applied conditionally. For example:

public obs$ =
    fromEvent(document, 'someEcent').pipe(
      conditionalOperator(() => someLogic(), startWith(true)),
    )

And the operator would look kinda like this:

function conditionalOperator(predicate, pipeTrue?, pipeFalse?) {
  return function (source) {
    return source.pipe(
      mergeMap(value => iif(() => predicate(value), pipeTrue ? of(value).pipe(pipeTrue) : of(value), pipeFalse ? of(value).pipe(pipeFalse) : of (value)))
    )
  }
}

Would you be interested in such a operator? I would do a PR then.
Is the implementation as proposed adequate?

[eneajaho]

Hi, this is very specific and I don't think we should add this one.
Thanks for opening the issue.