This is the fourth post in the Sneak Preview series. Closure compiler can process AMD, CommonJS and ES6 modules giving wide support for the Node ecosystem. Even so, there are popular cases which Closure doesn’t support directly, such as React’sJSX. [1] Maria Geller’s Google Summer of Code work also addressed this based on a design outlined by David Nolen and a preprocessing hook has been present since version 1.7.48. However, the original design makes integration with other build tools ...