From cfabae56d7066105dae25e2b66307f9772b027ad Mon Sep 17 00:00:00 2001
From: Luis Contreras <one.tmac@gmail.com>
Date: Fri, 9 Oct 2020 01:21:44 +0200
Subject: [PATCH 1/2] fix: ignore duplicated tags

---
 gatsby-node.js    | 3 ++-
 src/util/stats.js | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/gatsby-node.js b/gatsby-node.js
index 8f64c729..f3084861 100644
--- a/gatsby-node.js
+++ b/gatsby-node.js
@@ -5,7 +5,8 @@ function sourceNodes({ actions, createNodeId, createContentDigest }) {
   // Add People to the GraphQL API, we randomize the data on each build so no one gets their feelings hurt
   people
     .sort(() => Math.random() - 0.5)
-    .forEach(person => {
+    .forEach(p => {
+      const person = { ...p, tags: [...new Set(p.tags)] };
       const nodeMeta = {
         id: createNodeId(`person-${person.name}`),
         parent: null,
diff --git a/src/util/stats.js b/src/util/stats.js
index d41e05d8..862cf86b 100644
--- a/src/util/stats.js
+++ b/src/util/stats.js
@@ -3,7 +3,8 @@ import people from '../data.js';
 
 function merge(prop) {
   return function(acc, obj) {
-    return [...obj[prop], ...acc];
+    const propEntries = [...new Set(obj[prop])];
+    return [...propEntries, ...acc];
   };
 }
 

From a8afcfe6b6ce41129572fabd834a66ba1941e6d4 Mon Sep 17 00:00:00 2001
From: Luis Contreras <one.tmac@gmail.com>
Date: Fri, 9 Oct 2020 01:39:14 +0200
Subject: [PATCH 2/2] refactor: rename variable and adding some comments

---
 gatsby-node.js    | 1 +
 src/util/stats.js | 5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/gatsby-node.js b/gatsby-node.js
index f3084861..a70e9aec 100644
--- a/gatsby-node.js
+++ b/gatsby-node.js
@@ -6,6 +6,7 @@ function sourceNodes({ actions, createNodeId, createContentDigest }) {
   people
     .sort(() => Math.random() - 0.5)
     .forEach(p => {
+      // Remove duplicated tags.
       const person = { ...p, tags: [...new Set(p.tags)] };
       const nodeMeta = {
         id: createNodeId(`person-${person.name}`),
diff --git a/src/util/stats.js b/src/util/stats.js
index 862cf86b..f016702d 100644
--- a/src/util/stats.js
+++ b/src/util/stats.js
@@ -3,8 +3,9 @@ import people from '../data.js';
 
 function merge(prop) {
   return function(acc, obj) {
-    const propEntries = [...new Set(obj[prop])];
-    return [...propEntries, ...acc];
+    // Remove duplicated values.
+    const values = [...new Set(obj[prop])];
+    return [...values, ...acc];
   };
 }