nodenext doesn't pick up on addition of `type` field to `package.json`

[DanielRosenwasser]

Here's a quick way you can clone this repro locally

https://github.com/DanielRosenwasser/daniel-ts-repros/
cd daniel-ts-repros
git checkout nodenext-package-watch-bug

---

// src/fileA.ts
import { foo } from "./fileB.mjs";

foo();

// src/fileB.mts
export function foo() {
}

// src/tsconfig.json
{
  "compilerOptions": {
    "target": "es2016",
    "module": "Node16",
    "outDir": "../out"
  }
}

// package.json

{
  "name": "nodenext-package-watch-bug",
  "version": "1.0.0",
  "description": "Repro",
  "author": "Daniel"
}

Currently this produces the following result in the editor or in --watch mode:

Module './fileB.mjs' cannot be imported using this construct. The specifier only resolves to an ES module, which cannot be imported synchronously. Use dynamic import instead.ts

If you add a "type": "module" to the package.json, then the error will not go away until you restart tsc or TS Server.

-  "author": "Daniel"
+  "author": "Daniel",
+  "type": "module"

[sheetalkamat]

Looks like package json is read for file format rather than for resolution .. which is why it’s not watched ..

[fatcerberus]

Possible root cause of #50058?

[sheetalkamat]

Working on fixing this, but its not going to be 2 line fix..