Thank you! TLDR: JSX transformer makes the following ES6 features compatible with old browsers (IE8+) * arrow functions [http://tc39wiki.calculist.org/es6/arro

Thank you! TLDR: JSX transformer makes the following ES6 features compatible with old browsers (IE8+) * arrow functions [http://tc39wiki.calculist.org/es6/arrow-functions/ http://tc39wiki.calculist.org/es6/arrow-functions/] * classes [https://github.com/esnext/es6-class https://github.com/esnext/es6-class] * destructuring [http://fitzgeraldnick.com/weblog/50/ http://fitzgeraldnick.com/weblog/50/] * object concise methods [http://ariya.ofilabs.com/2013/03/es6-and-method-definitions.html http://ariya.ofilabs.com/2013/03/es6-and-method-definitions....] * rest parameters [http://tc39wiki.calculist.org/es6/rest-parameters/ http://tc39wiki.calculist.org/es6/rest-parameters/] * template strings [http://tc39wiki.calculist.org/es6/template-strings/ http://tc39wiki.calculist.org/es6/template-strings/] * object literal property shorthand [http://tc39wiki.calculist.org/es6/object-literal-enhancements/ http://tc39wiki.calculist.org/es6/object-literal-enhancement...] Notably absent: default parameter values and block scoping ("let")