auto-import React or whatever
As an option, it might be useful if you could say to Bublé 'add this line of code to the top of the file if you find any JSX':
const { code, map } = buble.transform( source, {
jsx: 'createElement',
jsxImport: 'import { createElement } from "react";'
});
That way people wouldn't have to remember to import it manually into each file (which would also cause linter warnings)