Add getAtom to Dispatcher API

Author: gaearon

src/Dispatcher.js

@@ -33,6 +33,10 @@ export default class Dispatcher {
       : this.dispatch(action);
   }
 
+  getAtom() {
+    return this.atom;
+  }
+
   setAtom(atom) {
     this.atom = atom;
     this.emitChange();

src/components/Provider.js

@@ -2,7 +2,8 @@ import { PropTypes } from 'react';
 
 const dispatcherShape = PropTypes.shape({
   subscribe: PropTypes.func.isRequired,
-  perform: PropTypes.func.isRequired
+  perform: PropTypes.func.isRequired,
+  getAtom: PropTypes.func.isRequired
 });
 
 export default class Provider {
@@ -41,6 +42,10 @@ export default class Provider {
     return this.props.dispatcher.perform(actionCreator, ...args);
   }
 
+  getAtom() {
+    return this.props.dispatcher.getAtom();
+  }
+
   render() {
     const { children } = this.props;
     return children();

src/createDispatcher.js

@@ -8,5 +8,6 @@ export default function createDispatcher(...args) {
     perform: ::dispatcher.perform,
     hydrate: ::dispatcher.hydrate,
     dehydrate: ::dispatcher.dehydrate,
+    getAtom: ::dispatcher.getAtom
   };
 }