module.exports = { lang: "en", permalink: function(data) { // Change (English) /en/blog/my-post URLs to have an implied language code /blog/my-post URLs instead. let [slashPrefixEmpty, langCode, ...stem] = data.page.filePathStem.split("/"); let path = stem.join("/"); // Account for `permalink: 404.html` style return stem[stem.length - 1] === "index" ? `${path}.html` : `${path}/index.html`; } }