Import assertions with swc enabled

[leonitousconforti]

I am having difficulty using import assertions with ts-node when swc is enabled. Import assertions work just fine when swc is disabled, but not when swc is enabled. Import assertions seem to be behind a config flag for swc per swc-project/swc#2802.

The import assertions should stay intact if the target environment is set to esnext, module system is esm and importAssertions in the config is set to true.

but I can't find any way to set importAssertions to true. I can see that ts-node creates its own swcconfig from the tsconfig here and I don't really see anyway to override or add to these options.

Am I missing something? Should this be enabled by default? I would be happy to move this to a new issue or create a pr if that would be more appropriate.

[cspotcode]

Looks like you've found a bug, thanks for reporting. Not only do we need to specify importAssertions, but swc also requires experimental: {keepImportAssertions: true}

I'm guessing that's why this bug exists, because SWC didn't support this when we first added support.

I've created a bug to track #1817, and I already have a PR in progress to fix #1802. Thanks again for reporting this.

[leonitousconforti]

Thanks for taking the time to help, I appreciate it!