Attempt to fix node.js integration by tweaking imports with babel

[Johennes]

Fixes: #4287

Checklist

• Tests written for new code (and old code if feasible).
• New or updated public/exported symbols have accurate TSDoc documentation.
• Linter and other CI checks pass.
• Sign-off given on the changes (see CONTRIBUTING.md).

[richvdh]

Hrm, interesting idea. I'm not a huge fan of adding more complexity to the build process though; I'd rather avoid this "magic" if possible.

[Johennes]

Ok, fair enough. Without digging deeper, I'm not entirely sure it wouldn't have caused weird side effects anyway.