[Bug] on using bun not able to connect temporal

[satya-nected]

What are you really trying to do?

I am trying create worker on the top of bun runtime, but not able to connect to temporal.

Describe the bug

Minimal Reproduction

on running this function program stucks and not responsing...

async function runWorker() {
  const connection = await NativeConnection.connect({
    address: 'localhost:7233',
  });
  const worker = await Worker.create({
    connection: connection,
    workflowsPath: require.resolve('./workflows'),
    activities: require('./activities'),
    taskQueue: 'my-task-queue',
  });

  console.log('Worker started...');
  await worker.run();
}

Environment/Versions

• OS and processor: Ubuntu
• Temporal Version: sdk version 1.11.7

Additional context

[mjameswh]

We don't support Bun at this time. We certainly hope that we'll reach that objective at some point in the future, but we are not actively working in that direction just now. It is simply too early for that.

For example, the specific issue you describe is due to a difference in how bun checks the error argument on napi_throw vs what's done in Node. That breaks the method that Neon Binding uses to check either it is safe to call back into the JS environment at that time.

It is not worth fixing that issue in upstream projects just yet. Bun's team is already doing some awesome bug hunting work on their NAPI implementation. See for example this PR and this one. I'd expect a few rounds like these, so let's give them time to complete their efforts first, and then for other key dependencies to stabilize.