art-template

art-template is a high-performance JavaScript template engine designed for both Node.js and browser environments. It achieves near-JavaScript-limit rendering speeds through a 'scope pre-declared' optimization technique. The current stable version is 4.13.4, with a release cadence that addresses bugs, performance, and adds minor features, as seen in recent patch and minor releases (e.g., v4.13.0 for performance fixes, v4.13.2 for type definitions). Key differentiators include its extreme speed, debugging friendliness (accurate error positioning, breakpoint support with Webpack loader), support for template inheritance, sub-templates, and a small browser footprint (6KB). It integrates with popular frameworks like Express and Koa, and build tools like Webpack.