es6-transpiler

An ES6 to ES5 transpiler that focuses on producing output without a runtime library, using only polyfills when necessary. It avoids try/catch for block binding, supports spread via .concat with iterator protocol, and strives for minimal temporary variables. The project is in beta and supports classes, destructuring, block binding (let/const), arrow functions, spread, for-of, comprehensions, template strings, object literals, binary/octal literals, unicode code point escapes, and RegExp flags. It does not support modules, generators, or symbols. Release cadence: dormant; latest version 0.7.18 from 2015. Key differentiator: no runtime library, line-to-line mapping, Closure Compiler support.