From 4cf9cbc9eb8c5371b4fed41c222903b708db2692 Mon Sep 17 00:00:00 2001
From: Oscar Otero <oom@oscarotero.com>
Date: Sat, 28 Oct 2023 18:13:16 +0200
Subject: [PATCH] performance issue

---
 CHANGELOG.md            |  1 +
 plugins/reading_info.ts | 11 ++++++++---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a4b57eed..076486c1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ Any BREAKING CHANGE between minor versions will be documented here in upper case
 ## [Unreleased]
 ### Fixed
 - Wrong urls in `pagefind` with `base_path` plugin [#502].
+- Performance issue in `reading_info` plugin.
 - Updated deps: `tailwindcss`, `deno_dom`, `highlight.js`, `sass`.
 
 ## [1.19.2] - 2023-10-21
diff --git a/plugins/reading_info.ts b/plugins/reading_info.ts
index 808163ee..d152958a 100644
--- a/plugins/reading_info.ts
+++ b/plugins/reading_info.ts
@@ -47,10 +47,15 @@ export default function (userOptions?: Partial<Options>) {
     const segmenter = new Intl.Segmenter(lang, {
       granularity: "word",
     });
-    const words = segmenter.segment(content);
-    const wordCount = [...words].filter((word) => word.isWordLike).length;
-    const minutes = wordCount / options.wordsPerMinute;
 
+    let wordCount = 0;
+    for (const word of segmenter.segment(content)) {
+      if (word.isWordLike) {
+        wordCount++;
+      }
+    }
+
+    const minutes = wordCount / options.wordsPerMinute;
     const time = Math.round(minutes * 60 * 1000);
     const displayTime = Math.ceil(parseFloat(minutes.toFixed(2)));