Optionally use babel-preset-node6 rather than babel-preset-es2015

[keithmo]

It would be awesome if there was a way to install a version of streamline which referenced babel-preset-node6 rather than babel-preset-es2015. This obviously be for Node 6.x installations, of course.

[bjouhier]

The good news is that you can enable this with a .streamline.json options file:

{
    "babel": {
        "presets": ["babel-preset-node6"]
    }
}

The bad news is that it won't work 😢 . The problem is that the streamline plugin only knows about ES5 AST nodes so it needs to run after babel-plugin-es2015. It generates invalid code for ES6 AST nodes (for example class methods with _ parameter).

It would be possible to enhance the plugin to transform ES6 AST nodes directly but this requires some work.

[keithmo]

Aha, good to know. Thanks for the info!

[bjouhier]

I'm keeping it open because the generated code will be more efficient with latest V8 if streamline targets ES6 rather than ES5.