This plugin transforms checks for a private property in an object

Compile ES2015 for...of to ES5

Compile ES2015 spread to ES5

Allow parsing of import.meta

Allow parsing of the logical assignment operators

Allow parsing of object rest/spread

Compile ES2015 template literals to ES5

Transform static class fields assignments that are affected by https://crbug.com/v8/12421

Allow parsing of BigInt literals

Compile ES2015 unicode string and number literals to ES5

Compile regular expressions using named groups to ES5.

Compile regular expressions using duplicate named groups to index-based groups.

Compile ES2015 object super to ES5

Wrap class field initializers with IIFE to workaround https://webkit.org/b/236843

A plugin of expect.js(https://github.com/Automattic/expect.js) for maptalks with assertions for Coordinate/GeoJSON/Layer

Compile object rest and spread to ES5

Transforms new.target meta property

Compile objects with duplicate keys to valid strict ES5

Turn async generator functions into ES2015 generators

Ensure that no reserved words are used.