ECMAScript 6 Tools

Transpilers

• Babel - Turn ES6+ code into vanilla ES5 with no runtime
• Traceur compiler - ES6 features > ES5. Includes classes, generators, promises, destructuring patterns, default parameters & more.
• es6ify - Traceur compiler wrapped as a Browserify v2 transform
• babelify - Babel transpiler wrapped as a Browserify transform
• es6-transpiler - ES6 > ES5. Includes classes, destructuring, default parameters, spread
• Square's es6-module-transpiler - ES6 modules to AMD or CJS
• Facebook's regenerator - transform ES6 yield/generator functions to ES5
• Facebook's jstransform - A simple utility for pluggable JS syntax transforms. Comes with a small set of ES6 -> ES5 transforms
• defs - ES6 block-scoped const and let variables to ES3 vars
• es6_module_transpiler-rails - ES6 Modules in the Rails Asset Pipeline
• Some Sweet.js macros that compile from ES6 to ES5
• Bitovi's transpile - Converts ES6 to AMD, CJS, and StealJS.
• regexpu — Transform Unicode-aware ES6 regular expressions to ES5
• Lebab - Transformations for ES5 code to ES6 (approximates)

Build-time transpilation

Gulp Plugins

• Babel: gulp-babel
• Traceur: gulp-traceur
• Regenerator: gulp-regenerator
• ES6 Module Transpiler: gulp-es6-module-transpiler
• es6-transpiler: gulp-es6-transpiler - ES6 → ES5
• es6-jstransform: gulp-jstransform - ES6 → ES5 using FB's jstransform
• regexpu: gulp-regexpu
• TypeScript: gulp-typescript

Grunt Tasks

• Babel: grunt-babel - Turn ES6+ code into vanilla ES5 with no runtime
• Traceur: grunt-traceur ES6 > ES5 transpilation, grunt-traceur-build
• ES6 Module Transpiler: grunt-es6-module-transpiler
• Regenerator: grunt-regenerator - ES6 generator functions to ES5
• grunt-microlib - tools for libs using ES6 module transpiler (sample Gruntfile)
• grunt-defs - ES6 block scoped const and let variables, to ES3
• es6-transpiler: grunt-es6-transpiler - ES6 → ES5
• TypeScript: grunt-ts - ES6+ > ES5/ES3 transpilation

Broccoli Plugins

• Babel: broccoli-babel-transpiler
• Traceur: broccoli-traceur
• Regenerator: broccoli-regenerator
• ES6 Transpiler: broccoli-transpiler
• ES6 Module Transpiler: broccoli-es6-module-transpiler
• ES6 fat arrow transpiler: broccoli-es6-arrow
• TypeScript: broccoli-tsc

Brunch Plugins

• Babel: babel-brunch
• ES6 Module Transpiler: es6-module-transpiler-brunch
• TypeScript: typescript-brunch

Webpack plugins

• Babel: babel-loader
• Traceur: traceur-compiler-loader
• TypeScript: awesome-typescript-loader

Duo plugins

• Babel: duo-babel
• TypeScript: duo-typescript

Connect plugins

• Babel: babel-connect