Remove stampit in favour of a factory function

common/utils/services-creator.js

@@ -1,6 +1,5 @@
 import { Observable, Disposable } from 'rx';
 import Fetchr from 'fetchr';
-import stampit from 'stampit';
 
 function callbackObserver(observer) {
   return (err, res) => {
@@ -13,36 +12,33 @@ function callbackObserver(observer) {
   };
 }
 
-
-export default stampit({
-  init({ args: [ options ] }) {
-    this.services = new Fetchr(options);
-  },
-  methods: {
-    readService$({ service: resource, params, config }) {
-      return Observable.create(observer => {
-        this.services.read(
-          resource,
-          params,
-          config,
-          callbackObserver(observer)
-        );
-
-        return Disposable.create(() => observer.dispose());
-      });
-    },
-    createService$({ service: resource, params, body, config }) {
-      return Observable.create(observer => {
-        this.services.create(
-          resource,
-          params,
-          body,
-          config,
-          callbackObserver(observer)
-        );
-
-        return Disposable.create(() => observer.dispose());
-      });
-    }
+export default function servicesCreator(options) {
+  const services = new Fetchr(options);
+  function readService$({ service: resource, params, config }) {
+    return Observable.create(observer => {
+      services.read(
+        resource,
+        params,
+        config,
+        callbackObserver(observer)
+      );
+      return Disposable.create(() => observer.dispose());
+    });
   }
-});
+  function createService$({ service: resource, params, body, config }) {
+    return Observable.create(observer => {
+      services.create(
+        resource,
+        params,
+        body,
+        config,
+        callbackObserver(observer)
+      );
+      return Disposable.create(() => observer.dispose());
+    });
+  }
+  return {
+    readService$,
+    createService$
+  };
+}