fix return statement usage in async generator

Author: alexeyraspopov

CHANGELOG.md

@@ -1,3 +1,7 @@
+## react-coroutine v0.5.1
+
+ * Fix `return` statement usage in async generators
+
 ## react-coroutine v0.5.0
 
  * Use a better approach to check if component is mounted

modules/Coroutine.js

@@ -30,7 +30,7 @@ function create(asyncFn, getVariables = () => ({})) {
         this.iterator = asyncBody;
         const getNextBody = () => {
           asyncBody.next().then((body) => {
-            if (body.done) {
+            if (body.done && typeof body.value === 'undefined') {
               this.iterator = null;
             } else {
               this.setState(() => ({ body: body.value, variables }));

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-coroutine",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "React Components as Coroutines",
   "main": "lib/Coroutine.js",
   "scripts": {

tests/Coroutine.test.js

@@ -62,7 +62,7 @@ describe('Coroutine', async () => {
     async function* render() {
       yield <p>Loading...</p>;
       await Promise.resolve();
-      yield <p>Done!</p>;
+      return <p>Done!</p>;
     }
 
     const TestComponent = Coroutine.create(render);