1import type { RemarkPlugin } from '@astrojs/markdown-remark';
 2import { toString } from 'mdast-util-to-string';
 3import getReadingTime from 'reading-time';
 4
 5export const remarkReadingTime: RemarkPlugin = function () {
 6  return (tree, { data }) => {
 7    const textOnPage = toString(tree);
 8    const readingTime = getReadingTime(textOnPage);
 9
10    // @ts-expect-error data.astro.frontmatter must be defined
11    data.astro.frontmatter.minutes = Math.max(1, Math.round(readingTime.minutes));
12
13    // @ts-expect-error data.astro.frontmatter must be defined
14    data.astro.frontmatter.words = readingTime.words;
15  };
16};