From 3bc9bbcfa74a0f7454456f9bca03d3bbad44df27 Mon Sep 17 00:00:00 2001
From: Wink Saville <wink@saville.com>
Date: Thu, 9 Dec 2021 12:28:06 -0800
Subject: [PATCH] Fix blog lesson 7

Two changes:
 - Change run so traversePosts the return value is the list not the Promise
 - Simplify traversePosts with the added benefit that if nothing is passed
   to traversePosts and empty list is returned rather than undefined.
---
 src/tutorials/0003-blog/07.js | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/tutorials/0003-blog/07.js b/src/tutorials/0003-blog/07.js
index 3c2696407..b0bffd613 100644
--- a/src/tutorials/0003-blog/07.js
+++ b/src/tutorials/0003-blog/07.js
@@ -94,7 +94,7 @@ const run = async () => {
     posts: [dogPostCid]
   })
 
-  return traversePosts(dogPostCid)
+  return await traversePosts(dogPostCid)
 }
 
 return run
@@ -107,13 +107,9 @@ const traversePosts = async (cid) => {
   while (cid) {
     result.push(cid)
     const current = await ipfs.dag.get(cid)
-    const prev = current.value.prev
-    if (prev) {
-      cid = prev
-    } else {
-      return result
-    }
+    cid = current.value.prev
   }
+  return result
 }
 
 const run = async () => {
@@ -151,7 +147,7 @@ const run = async () => {
     posts: [dogPostCid]
   })
 
-  return traversePosts(dogPostCid)
+  return await traversePosts(dogPostCid)
 }
 
 return run