Too Long; Didn't Read
Moe-js is a modern template engine for JavaScript for Node.js. It uses a similar syntax to Handlerbars and has embedded JavaScript support. Moe-JS requires all data properties to be explicitly referenced. It can be compiled to execute either synchronously or asynchronously. It's easy to use for template scripts from untrusted sources, so don't let users upload templates for your next project. It might be a simple, easy, easy-to-use and easy to do on the server.