You've been looking for a more sophisticated templating engine for JavaScript. Here it is.

• Rich Powerful language with block inheritance, autoescaping, macros, asynchronous control, and more. Heavily inspired by jinja2
• Fast & Lean High-performant. Small 8K gzipped runtime with precompiled templates in the browser
• Extensible Crazy extensible with custom filters and extensions
• Everywhere Available in node and all modern web browsers, with thorough precompilation options