requiring traceur overwrites System

[justinbmeyer]

This line requires traceur:

https://github.com/ModuleLoader/es6-module-loader/blob/master/lib/loader.js#L186

Traceur overwrites System. So that later, when curSystem points to the current System at:

https://github.com/ModuleLoader/es6-module-loader/blob/master/lib/loader.js#L217

it's actually already pointing to Traceur's system. This prevents this code from setting System back.

I recommend moving this "System" saving code to the top of parse.

[guybedford]

Thanks for this - it's tricky to catch when this changes. Will definitely implement a fix.

[guybedford]

I believe this should be fixed on the master branch. If you notice any other issues like this please do let me know.