per-target aliases

[mxposed]

Hi! I'm struggling in configuring parcel for my (quite odd) needs.
Is there an option to have per-target aliases somehow?

My situation: I have a browser library that's supposed to be a widget on observablehq. It has 1 dependency on d3, which I alias to global, and it works. But in this case my local html tests fail on serving, because this alias makes parcel serve empty d3.js instead of serving it from node_modules.

Would be happy with any advice or if it's not possible.