Error compiling ES6 module using react hmre with Webpack 2 RC4

[insin]

I'm seeing this error serving a HMR build with Webpack 2 RC4 when using ES2015 modules:

module is not allowed in EcmaScript module: This module was detected as EcmaScript module (import or export syntax was used). In such a module using 'module' is not allowed.

I'm guessing this is because babel-plugin-react-transform generates a reference to module here to pass through to here.