From e0fc4fa7aa4828e909d7d0c0cb0a176778e6c773 Mon Sep 17 00:00:00 2001
From: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Date: Fri, 21 Feb 2025 11:20:45 +0100
Subject: [PATCH] fix: use 0 based index for FSD (#58927)

---
 curriculum/utils.js      | 2 +-
 curriculum/utils.test.ts | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/curriculum/utils.js b/curriculum/utils.js
index f4532cd5d5b..c2eb12da97e 100644
--- a/curriculum/utils.js
+++ b/curriculum/utils.js
@@ -139,7 +139,7 @@ function getBlockOrder(blockName, superBlockStructure) {
       `The block "${blockName}" does not appear in the superblock structure.`
     );
 
-  return index + 1;
+  return index;
 }
 exports.createSuperOrder = createSuperOrder;
 exports.getSuperOrder = getSuperOrder;
diff --git a/curriculum/utils.test.ts b/curriculum/utils.test.ts
index 6e44def8739..5d826d5d1ab 100644
--- a/curriculum/utils.test.ts
+++ b/curriculum/utils.test.ts
@@ -250,11 +250,11 @@ describe('getBlockOrder', () => {
   it('returns the correct order when the chapter only contains one module', () => {
     expect(
       getBlockOrder('welcome-to-freecodecamp', mockSuperBlockStructure)
-    ).toBe(1);
+    ).toBe(0);
   });
 
   it('returns the correct order when the chapter contains multiple modules', () => {
-    expect(getBlockOrder('block-one-m2', mockSuperBlockStructure)).toBe(4);
+    expect(getBlockOrder('block-one-m2', mockSuperBlockStructure)).toBe(3);
   });
 
   it('throws if a block does not exist', () => {