Generating types without bundling?

[steinybot]

I am using tsup as an easy way to create a node package with both cjs and esm (for backwards compatibility). I don't want to bundle anything.

I'm using bundle: false which is fine, I get .js and .mjs files out but the .d.ts files are whack. It looks as though the types are for a bundled version.

Is this expected and/or is there a workaround? I guess I might just have to use tsc.

Here is the code: https://github.com/BotTech/memfs/tree/beta