Imports named 'module' causes issues

I just upgraded meteor to 1.7 and tried to replace `pbastowski:angular-babel@1.3.7` with `ecmascript`
and ran into this issue.
```javascript
import module from "./index.js"
```
produces this:
```javascript
var module1 = _module;
var _module;

module1.watch(require("./index.js"), {
"default": function (v) {
_module = v;
}
}, 0);
```
Where, in my case, it gives the error "_module is not defined"