rules.js (30 lines of code) (raw):

const Rule = require("html-validate").Rule; class HtmlTitle extends Rule { documentation(context) { return { description: "Title of the page must be defined" }; } setup() { this.on("dom:ready", event => { const title = event.document.querySelector('html head title'); if (title === null) { this.report(event.document.querySelector('html'), "Missing <title> tag in the <head>"); } else if (!title.textContent || title.textContent.trim().length === 0) { this.report(title, "No title specified"); } else if (title.textContent[0] === '-') { this.report(title, "Title starts with the dash `-`, add the `title` front matter to the Hugo content"); } else if (title.textContent.startsWith('Untitled')) { this.report(title, "Title starts with the `Untitled` make sure that the Asciidoc file starts with level 1 heading"); } }); } } module.exports = { rules: { "hop/title": HtmlTitle } };