From 885711afb97b772f7c970ed16e17de799a74c923 Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Thu, 23 Aug 2018 18:28:59 +0200
Subject: [PATCH] Fix off-by-one error in aria-posinset (#8388)

Fix #8191
---
 .../mastodon/components/intersection_observer_article.js      | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/javascript/mastodon/components/intersection_observer_article.js b/app/javascript/mastodon/components/intersection_observer_article.js
index e2ce9ec96..de2203a4b 100644
--- a/app/javascript/mastodon/components/intersection_observer_article.js
+++ b/app/javascript/mastodon/components/intersection_observer_article.js
@@ -109,7 +109,7 @@ export default class IntersectionObserverArticle extends React.Component {
       return (
         <article
           ref={this.handleRef}
-          aria-posinset={index}
+          aria-posinset={index + 1}
           aria-setsize={listLength}
           style={{ height: `${this.height || cachedHeight}px`, opacity: 0, overflow: 'hidden' }}
           data-id={id}
@@ -121,7 +121,7 @@ export default class IntersectionObserverArticle extends React.Component {
     }
 
     return (
-      <article ref={this.handleRef} aria-posinset={index} aria-setsize={listLength} data-id={id} tabIndex='0'>
+      <article ref={this.handleRef} aria-posinset={index + 1} aria-setsize={listLength} data-id={id} tabIndex='0'>
         {children && React.cloneElement(children, { hidden: false })}
       </article>
     );