square/es6-module-transpiler

JavaScript syntax tree transformer, nondestructive pretty-printer, and automatic source map generator

browser-side require() the node way

simple, flexible, fun test framework

Temporary file and directory creator

Utilities for AST transformers.

Facebook-specific fork of the esprima project

POSIX-style getopt()

Runner for example files, usually tests.

Reserved words that may not be used as variables, functions, methods, or object identifiers, since ECMAScript specifies special behavior for them.

ES6 classes compiled to ES5.

Fake file system for testing