esdown

An ES6+ to ES5 compiler and runtime environment, written in ES6. Version 1.2.8 is the current stable release. Allows writing programs using next-generation JavaScript features (classes, modules, etc.) and compiling them to ES5 for legacy environments. Can also be used as a runtime to execute ES6+ modules on Node.js via a REPL or direct module execution. Provides a CLI for translation with bundling and global export options. Key differentiator: includes module loading and bundling, comparable to Babel but more limited in scope and features; largely superseded by Babel and TypeScript.