Compile ES2015 block scoping (const and let) to ES5

Allow parsing of BigInt literals

Compile ES2015 default and rest parameters to ES5

Compile ES2015 object super to ES5

Add a __self prop to all JSX Elements

Add a __source prop to all JSX Elements

Apply ES2015 function.name semantics to all functions

Ensure that no reserved words are used.

Compile ES2015 computed properties to ES5

Transforms new.target meta property

Allow parsing of the nullish-coalescing operator

Compile export namespace to ES2015

Turn async generator functions into ES2015 generators

Ensure that reserved words are quoted in object property keys

Compile ES2015 sticky regex to an ES5 RegExp constructor

Allow parsing of the U+2028 LINE SEPARATOR and U+2029 PARAGRAPH SEPARATOR in JS strings

Allow parsing of Decimal, Binary, Hex and Octal literals that contain a Numeric Literal Separator

Compile regular expressions using named groups to ES5.

Compile ES2015 destructuring to ES5

Compile ES2015 Unicode escapes to ES5