add observable

ts/index.ts

@@ -1,3 +1,5 @@
 import * as plugins from './smartrx.plugins'
 
 export let standardExport = 'Hi there! :) This is a exported string'
+export * from './smartrx.classes.observablemap'
+export * from './smartrx.classes.observable'

ts/smartrx.classes.observable.ts

@@ -0,0 +1,8 @@
+import { Observable as rxjsObservable } from 'rxjs'
+export {
+  rxjsObservable
+}
+
+export class Observable<T> extends rxjsObservable<T> {
+  static fromIntake () {}
+}

ts/smartrx.classes.observablemap.ts

@@ -0,0 +1,42 @@
+import * as plugins from './smartrx.plugins'
+import { Observable, rxjsObservable } from './smartrx.classes.observable'
+
+import { Objectmap } from 'lik'
+import { Stringmap } from 'lik'
+
+/**
+ * bundles an observable with an emitter
+ */
+export interface ObservableEmitterBundle {
+  observable: plugins.rxjs.Observable<any>
+  emitter: plugins.events.EventEmitter
+  event: string
+}
+
+/**
+ * manages observables by making sure that only one observable is regsitered per event
+ */
+export class Observablemap {
+  ObservableEmitterBundleObjectmap = new Objectmap<ObservableEmitterBundle>()
+
+  /**
+   * creates a new observable if not yet registered for the same event.
+   * In case event has been registered before the same observable is returned.
+   */
+  getObservableForEmitterEvent (emitterArg: plugins.events.EventEmitter, eventArg: string) {
+    let existingBundle = this.ObservableEmitterBundleObjectmap.find((bundleArg) => {
+      return (bundleArg.emitter === emitterArg && bundleArg.event === eventArg)
+    })
+    if (existingBundle) {
+      return existingBundle.observable
+    } else {
+      let emitterObservable = plugins.rxjs.Observable.fromEvent(emitterArg, eventArg)
+      this.ObservableEmitterBundleObjectmap.add({
+        observable: emitterObservable,
+        emitter: emitterArg,
+        event: eventArg
+      })
+      return emitterObservable
+    }
+  }
+}

ts/smartrx.plugins.ts

@@ -1 +1,10 @@
 import 'typings-global'
+import * as events from 'events'
+import * as lik from 'lik'
+import * as rxjs from 'rxjs'
+
+export {
+  events,
+  lik,
+  rxjs
+}