import getReadingTime from 'reading-time' import { toString } from 'mdast-util-to-string' export function remarkReadingTime() { return function (tree, { data }) { const textOnPage = toString(tree) const readingTime = getReadingTime(textOnPage) data.astro.frontmatter.text = textOnPage data.astro.frontmatter.readingTime = readingTime } }