1. Fast Deep EqualThe fastest deep equality check with Date, RegExp and ES6 Map, Set and typed arrays support
3. node-babelBabel require hook with whitelist of transpilers for es6 features that node 0.12 with harmony flag does not support
4. json-source-mapParse/stringify JSON and provide source-map for JSON-pointers to all nodes - supports BigInt, Maps, Sets and Typed arrays