Custom mdast util

remark-post-meta.mjs

@@ -1,16 +1,26 @@
-import getReadingTime from 'reading-time';
-import { toString as mdToString } from 'mdast-util-to-string';
+import { select } from 'unist-util-select'
+import { visit } from 'unist-util-visit'
+import getReadingTime from 'reading-time'
 
-const ELLIPSIS = '\u2026';
+export default function remarkPostMeta() {
+  return (tree, { data }) => {
+    const firstPara = select(':not(heading) paragraph:first-of-type', tree)
 
-export default function() {
-  return function (tree, { data }) {
-    const textOnPage = mdToString(tree);
+    const firstParaText = mdToString(firstPara)
+    const articleText = mdToString(tree)
 
-    const readingTime = getReadingTime(textOnPage);
-    data.astro.frontmatter.readingTime = readingTime.text;
+    const readingTime = getReadingTime(articleText)
+    data.astro.frontmatter.readingTime = readingTime.minutes
 
-    const description = textOnPage.slice(0, 100) + ELLIPSIS;
-    data.astro.frontmatter.description = description;
-  };
+    data.astro.frontmatter.description = firstParaText
+  }
+}
+
+function mdToString(tree) {
+  let str = ''
+  visit(tree, 'text', node => {
+    str += node.value
+    str += ' '
+  })
+  return str.trimEnd()
 }