Changelog & history

• Performance: RxJS 5 5X faster on average than RxJS 4 in V8
• Operator: RxJS 5 streamline operators & import module (ES6)
• Specification: RxJS 5 ES Observable specification matches


• Syntax: RxJS 6 use "pipe" function which ships all Observable Operators (like then for Promises)
• RxJS 6 apply treeshaking

Import path

ES6 Module version:

        # Before
        import { Observable } from 'rxjs/Observable';
        import 'rxjs/add/observable/of';
        import 'rxjs/add/operator/map'
        import 'rxjs/add/operator/throttle'
        # After
        import { Observable, of } from 'rxjs';
        import { map, throttle } from 'rxjs/operators';
    

CDN version:

        # Before
        Rx.Observable // Static|Observable methods || Observable factory
        # After
        rxjs // Static|Observable methods || Observable factory
        rxjs/operators // Instance methods || Observable instance methods
    

Renamed operator

Instance method

• catch() => catchError()
• do() => tap()
• finally() => finalize()
• switch() => switchAll()

Static method

• throw() => throwError()
• fromPromise() => from() infered the type