message: fix undefined variable
diff: @@ -10,7 +10,7 @@ export default class Pug extends TemplateEngine {
  //Update cache
  site.addEventListener("beforeUpdate", (ev) => {
  - for (const filename of filenames) {
  + for (const filename of ev.files) {
  this.cache.delete(site.src(filename));
  }
  });
  