Jazzle

Jazzle is a high-performance ECMAScript transpiler with zero dependencies, designed to convert modern JavaScript features (destructuring, classes, lexical variables, arrow functions, template strings) into ES5-compatible code. As of version 0.9.12, it is still in active development with a focus on efficiency and correctness, notably handling temporal dead zones and super-bound this references. It claims to be roughly 2x faster than Babel on early benchmarks. The package provides a programmatic API (Node.js >=6.20.0) with CLI support planned but not yet released. It differentiates itself by targeting edge cases often missed by other transpilers, while maintaining minimal footprint.