12.diff

@@ -6,13 +6,14 @@ function generateReadReport(readList, recommendList) {
 function createReportData(readList, recommendList) {
   const reportData = {};
   reportData.userName = readList.name;
+  reportData.readBooks = readList.books;
   return reportData;
 }

 function renderPlainText(reportData, readList, recommendList) {
   let report = `name: ${reportData.userName}\n`;
   report += '-----\n';
-  for (let book of readList.books) {
+  for (let book of reportData.readBooks) {
     if (book.times >= 1) {
       report += `  - ${book.name}: ${point(book)} point\n`;
     }
@@ -22,7 +23,7 @@ function renderPlainText(reportData, readList, recommendList) {
   return report;

   function total() {
-    return readList.books
+    return reportData.readBooks
       .reduce((total, book) => total + point(book), 0);
   }