templeo ​

templeo is a zero-dependency template engine that uses built-in JavaScript/ECMAScript Template Literals. There is no regular-expression parser or special template syntax—just native ES template literals.

For more details, see The Basics, Cache, Examples, and the API Reference.

Features ​

• 💯% PURE — No special syntax is required. Everything is part of the ECMAScript Template Literals specification, and a single Engine can output HTML, DOM nodes, JSON, YAML, or virtually any other format.
• 🌱 Grows with the language — New template literal syntax and language features are immediately usable without a templeo parser update.
• 🌐 Stand-Alone Rendering — Once compiled, a rendering function no longer depends on templeo internals and can be serialized, deserialized, or served from another source.
• 🛡️ Secure — Compilation is sandboxed from local scope, and portable renderers remain isolated from the scope in which they were compiled.
• ⛓️ Parameterized/Nested Includes — Reusable partials can be included at compile time or render time, with parameters confined to the included partial.
• 🐞 Debugging — Compiled templates remain accessible through VM sourceURL values or module imports/requires for direct debugging.
• 🧠 Extensible — Register helper functions for use in template literal expressions, while rendered output remains independent of templeo.
• 🛎️ Auto Fetch — Templates, partials, and context can be fetched automatically at compile time or render time from HTTP/S sources.
• 🏧 Caching — Templates are cached in memory by default. Bundled extensions support IndexedDB/LevelDB and the Node.js file system.