No msg

src/App.js

@@ -47,7 +47,6 @@ class BooksApp extends React.Component {
     const id = e.target.name
     const newShelf = e.target.value
     const books = this.state.books
-
     books.forEach((book) => {
       if (book.id === id) {
         book.shelf = newShelf;

src/Bookshelf.js

@@ -5,7 +5,6 @@ class Bookshelf extends Component {
   render() {
     const books = this.props.books
     const onSelect = this.props.onSelect
-
     return (
 
       <div className="list-books">

src/SearchPage.js

@@ -15,10 +15,10 @@ class SearchPage extends Component {
     const books = this.props.books
     if (query.length > 3) {
       search(query).then((results) => {
-        for (var result in results) {
-          for (var book in books) {
-            if (result === book) {
-              result.shelf = book.shelf
+        for (var i = 0; i < books.length; i++) {
+          for (var j = 0; j < results.length; j++) {
+            if (results[j] === books[i]) {
+              results[j].shelf = books[i].shelf
             }
           }
         }