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// Redux-Observable 1.x.x
const logAppVersionEpic = () => (
  of(appVersion)
  .pipe(
    tap(console.info),
    ignoreElements(),
  )
)

// Another Option for Redux-Observable 1.x.x
const logAppVersionEpic = () => (
  EMPTY
  .pipe(
    defaultIfEmpty(appVersion),
    tap(console.info),
    ignoreElements(),
  )
)

// Redux-Observable 0.x.x
const logAppVersionEpic = () => (
  timer(0)
  .pipe(
    mapTo(appVersion),
    tap(console.info),
    ignoreElements(),
  )
)