upgrade.md

RxJS Upgrade

From RxJS 4 to 5

A cheatsheet summary of https://github.com/ReactiveX/RxJS/blob/master/MIGRATION.md

• Observer is now an interface, and is implemented by Subscriber
• observer.onNext('value') => observer.next('value')
• subscription.dispose() => subscription.unsubscribe()
• All subscriptions are composite with add and remove
• flatMap => mergeMap (but flatMap still works as alias)
• flatMapFirst => exhaustMap
• flatMapLatest => switchMap
• just => of
• select => map
• selectConcat => concatMap
• map(function) => the same, but
• map(value) => mapTo(value)