Import assertions are lost

[JohnCampionJr]

Environment

Node 18

Reproduction

Put a JSON import with an assertion to a TS file and run unbuild

Describe the bug

import pkg from 'npm-package/package.json' assert { type: "json" }

loses the assert and becomes

import pkg from 'npm-package/package.json'

Additional context

Note that package.json is actually exported by the package I'm using. It works fine otherwise.

ESBuild leaves it alone as expected in ESM formats.

Logs

No response

[JohnCampionJr]

This is a low priority and can be closed if you don't want to fix; I found an alternate way to accomplish what I was looking to do :)