+1 for @Kleo use right tool for the right job.
With ES6 actually you now can have simple vanilla views folder:
// views/alert.js
export default data => `<div class="alert ${data.type ? data.type : 'alert-info'}">
${data.message}
</div>`;
// components/alert.js
import tpl from '../views/alert.js'
export const Alert = {
render(data) {
return tpl(data);
}
}