Mocha 11 + tsx = ?

.gitignore

node_modules/

README.md

1. npm i
2. npm t
3. npm i mocha@^11
4. npm t

First run, using mocha 10, works.

Second run will fail because somehow the modules are not loaded correctly.

The "only" difference is mocha. Why is tsx no longer working corectly

index.test.ts

import * as assert from "node:assert";
import env from "@zazuko/env";
import { describe, it } from "mocha";

describe('using tsx', () => {
    it('should load module correctly', () => {
        assert.equal(env.ns.schema.Person.value, "http://schema.org/Person")
    })
});

package.json

{
  "name": "mocha-tsx",
  "type": "module",
  "scripts": {
    "test": "mocha index.test.ts"
  },
  "dependencies": {
    "@zazuko/env": "^3.0.1",
    "mocha": "^10",
    "tsx": "^4.21.0",
    "typescript": "^5.9.3"
  },
  "mocha": {
    "require": "tsx"
  }
}