Argument 1 ('event') to EventTarget.dispatchEvent must be an instance of Event

[anudit]

What version of Bun is running?

1.1.8+89d25807f

What platform is your computer?

Darwin 23.4.0 arm64 arm

What steps can reproduce the bug?

Minimal Reproduction,

// bun index.ts
import { buildBn128, F1Field } from "ffjavascript";

async function main() {
    let bn128 = await buildBn128();
    const F = new F1Field(bn128.r);

    const a = F.e("9");
    const b = F.sqrt(a);
    console.log(b)

    bn128.terminate();
}

main()

Errors with

170 |     event.data = data;
171 |     if (q == null) self.dispatchEvent(event);else q.push(event);
172 |   });
173 |   threads.parentPort.on('error', err => {
174 |     err.type = 'Error';
175 |     self.dispatchEvent(err);
          ^
TypeError: Argument 1 ('event') to EventTarget.dispatchEvent must be an instance of Event
      at /Users/anudit/Documents/GitHub/semaphore-minimal/node_modules/web-worker/cjs/node.js:175:5
[1]    75686 trace trap  bun index.ts

What is the expected behavior?

Expected output when I run with pnpx tsx index.ts is 3n

What do you see instead?

No response

Additional information

No response