Compile ES2015 default and rest parameters to ES5

Compile ES2015 block scoping (const and let) to ES5

Compile ES2015 computed properties to ES5

Compile ES2015 destructuring to ES5

Compile ES2015 for...of to ES5

Compile class public and private fields, private methods and decorators to ES6

Compile ES2015 classes to ES5

Compile ES2015 sticky regex to an ES5 RegExp constructor

Compile ES2015 Unicode regex to ES5

Compile ES2015 shorthand properties to ES5

MDXv1 to CSF webpack compiler and loader

Compile ES2015 spread to ES5

Build environment checking (a la autoconf) for node.js

Compile ES2015 template literals to ES5

Compile exponentiation operator to ES5

Compile ES2015 unicode string and number literals to ES5

Compile objects with duplicate keys to valid strict ES5

Compile ES2015 Unicode escapes to ES5

Parses and compiles CSS nth-checks to highly optimized functions.

Compile ES2015 object super to ES5