Merge pull request #200 from blesh/use-symbol-observable

fix(Symbol.observable): Ensure compatability with other polyfills

package.json

@@ -60,5 +60,8 @@
     "transducers-js": "0.4.174",
     "transducers.js": "0.3.2",
     "zen-observable": "0.1.3"
+  },
+  "dependencies": {
+    "symbol-observable": "^0.2.4"
   }
 }

src/index.js

@@ -86,8 +86,8 @@ import fromESObservable from './interop/from-es-observable';
 // (Stream|Property) -> ES7 Observable
 import toESObservable from './interop/to-es-observable';
 Observable.prototype.toESObservable = toESObservable;
-import symbol from './utils/symbol'
-Observable.prototype[symbol('observable')] = toESObservable;
+import $$observable from 'symbol-observable';
+Observable.prototype[$$observable] = toESObservable;
 
 
 

src/interop/from-es-observable.js

@@ -1,9 +1,8 @@
 import stream from '../primary/stream';
-import symbol_ from '../utils/symbol';
-const symbol = symbol_('observable');
+import $$observable from 'symbol-observable';
 
 export default function fromESObservable(_observable) {
-  const observable = _observable[symbol] ? _observable[symbol]() : _observable;
+  const observable = _observable[$$observable] ? _observable[$$observable]() : _observable;
   return stream(function(emitter) {
     const unsub = observable.subscribe({
       error(error) {