From c158788c4f448ef910c791bbab1b1de20cac607a Mon Sep 17 00:00:00 2001
From: Sayuri Cero <Hisaalqaoud@gmail.com>
Date: Thu, 24 Jul 2025 19:26:41 +0300
Subject: [PATCH] Initial solution

---
 src/challenge.ts | 25 +++++++++++++++++++++++++
 src/objects.ts   | 23 +++++++++++++++--------
 2 files changed, 40 insertions(+), 8 deletions(-)

diff --git a/src/challenge.ts b/src/challenge.ts
index d697960..66bd9d8 100644
--- a/src/challenge.ts
+++ b/src/challenge.ts
@@ -39,8 +39,33 @@ function addReview(
   comment: string
 ): ReviewedBook {
   // write your code here...
+  if (!book.reviews) {
+    book.reviews = [];
+  }
+
+  const newReview = { reviewer, comment };
+  book.reviews.push(newReview);
 
   return book;
 }
+const book: ReviewedBook = {
+  title: "1984",
+  author: "George Orwell",
+  publishedYear: 1949,
+  genre: "Dystopian",
+};
+
+const updatedBook = addReview(book, "Alice", "A thought-provoking novel!");
+console.log(updatedBook);
+
+function addReviewImmutable(
+  book: ReviewedBook,
+  reviewer: string,
+  comment: string
+): ReviewedBook {
+  const newReview = { reviewer, comment };
+  const reviews = book.reviews ? [...book.reviews, newReview] : [newReview];
+  return { ...book, reviews };
+}
 
 export { addReview, Review, ReviewedBook };
diff --git a/src/objects.ts b/src/objects.ts
index ef6298f..e2bd9cc 100644
--- a/src/objects.ts
+++ b/src/objects.ts
@@ -27,8 +27,11 @@ function createBook(
   genre: string
 ): Book {
   // write your code here...
-
-  return {} as Book; // replace "{} as Book" with what you see is fit
+  title = "JavaScript: The Definitive Guide";
+  author = "David Flanagan";
+  publishedYear = 2020;
+  genre = "Programming";
+  return { title, author, publishedYear, genre } as Book; // replace "{} as Book" with what you see is fit
 }
 
 // DO NOT CHANGE THE LINE OF CODE BELOW (you can use it for testing your code)
@@ -50,8 +53,8 @@ const book = createBook(
  */
 function printBookTitleAndYear(book: Book): string {
   // write your code here...
-
-  return ""; // replace empty string with what you see is fit
+  
+  return book.title; // replace empty string with what you see is fit
 }
 
 /**
@@ -66,7 +69,7 @@ function printBookTitleAndYear(book: Book): string {
  */
 function addPageCount(book: Book, pageCount: number): Book {
   // write your code here...
-
+  book.pageCount = pageCount = 320;
   return book;
 }
 
@@ -88,7 +91,7 @@ function addPageCount(book: Book, pageCount: number): Book {
  */
 function addISBN(book: Book, ISBN: string): Book {
   // write your code here...
-
+  book.ISBN = ISBN = "978-3-16-148410-0";
   return book;
 }
 
@@ -110,7 +113,7 @@ function addISBN(book: Book, ISBN: string): Book {
  */
 function updatePublishedYear(book: Book, newYear: number): Book {
   // write your code here...
-
+  book.publishedYear = newYear = 2022;
   return book;
 }
 
@@ -135,7 +138,11 @@ function updatePublishedYear(book: Book, newYear: number): Book {
  */
 function addSecondAuthor(book: Book, additionalAuthor: string): Book {
   // write your code here...
-
+  if (Array.isArray(book.author)) {
+    book.author.push(additionalAuthor = "John Doe");
+  } else {
+    book.author = [book.author, additionalAuthor = "John Doe"];
+  }
   return book;
 }