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rx-from-event-emitter

v1.0.6

Published

Makes an Observable from the successive outputs an EventEmitter would give to a callback function.

Readme

Description

This module extends the capabilities offered by Rx.Observable.fromEvent(), by allowing multiple kinds of events to be handled in one of the three ways a subscription allows.

Usage

Example: suppose that message is of type http.IncomingMessage; you can use several kinds of events from it and they will be treated in one of the three ways corresponding to the subscription mechanism:

  • ['data']: put here the normal events, and their outputs will be given to next();
  • ['error']: put here the error events, and their outputs will be given to error();
  • ['close', 'end']: put here the events corresponding to complete().

The events arrays must be given in that order: next, error, complete.

So you can write: makeRxObservableFromEventEmitter<Buffer>(message, ['data'], ['error'], ['close', 'end'])

In some cases, the normal output is an Array, such as Buffer[]. In these cases, use this function: makeRxObservableFromEventEmitterArray<Buffer>(emitter, ['data'], ['error'], ['close', 'end'])