From cbae88fc4e9b98764cfccca2e85f265c4b894573 Mon Sep 17 00:00:00 2001
From: Adam Brangenberg <adambrangenberg@proton.me>
Date: Mon, 31 Jul 2023 04:08:32 +0000
Subject: [PATCH] Removing redundant properties (#356)

---
 quartz/plugins/transformers/description.ts |   31 +++++++++++++++++++------------
 1 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/quartz/plugins/transformers/description.ts b/quartz/plugins/transformers/description.ts
index ed59f82..08af5c7 100644
--- a/quartz/plugins/transformers/description.ts
+++ b/quartz/plugins/transformers/description.ts
@@ -1,4 +1,4 @@
-import { Root as HTMLRoot } from 'hast'
+import { Root as HTMLRoot } from "hast"
 import { toString } from "hast-util-to-string"
 import { QuartzTransformerPlugin } from "../types"
 
@@ -7,46 +7,53 @@
 }
 
 const defaultOptions: Options = {
-  descriptionLength: 150
+  descriptionLength: 150,
+}
+
+const escapeHTML = (unsafe: string) => {
+  return unsafe
+    .replaceAll("&", "&amp;")
+    .replaceAll("<", "&lt;")
+    .replaceAll(">", "&gt;")
+    .replaceAll('"', "&quot;")
+    .replaceAll("'", "&#039;")
 }
 
 export const Description: QuartzTransformerPlugin<Partial<Options> | undefined> = (userOpts) => {
   const opts = { ...defaultOptions, ...userOpts }
   return {
     name: "Description",
-    markdownPlugins() {
-      return []
-    },
     htmlPlugins() {
       return [
         () => {
           return async (tree: HTMLRoot, file) => {
             const frontMatterDescription = file.data.frontmatter?.description
-            const text = toString(tree)
+            const text = escapeHTML(toString(tree))
 
             const desc = frontMatterDescription ?? text
-            const sentences = desc.replace(/\s+/g, ' ').split('.')
+            const sentences = desc.replace(/\s+/g, " ").split(".")
             let finalDesc = ""
             let sentenceIdx = 0
             const len = opts.descriptionLength
             while (finalDesc.length < len) {
-              finalDesc += sentences[sentenceIdx] + '.'
+              const sentence = sentences[sentenceIdx]
+              if (!sentence) break
+              finalDesc += sentence + "."
               sentenceIdx++
             }
 
             file.data.description = finalDesc
             file.data.text = text
           }
-        }
+        },
       ]
-    }
+    },
   }
 }
 
-declare module 'vfile' {
+declare module "vfile" {
   interface DataMap {
     description: string
     text: string
   }
 }
-

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