Deployment to AWS Lambda with Bun Failed with using AWS CDK about bun HOT 4 CLOSED

According to the logs it looks like you're running the code using the Node runtime?

from bun.

I think, you're right. I changed the runtime later to use Runtime.PROVIDED_AL2, but it did not help. I guess I am missing the place to bundle the files for the runtime, isn't it? If yes, I would love to take help and learn where I need to do this.

from bun.

When I change the Runtime, my code looks like

const nodejsFunction = new NodejsFunction(this, "BunCdkFunction", {
      entry: "lambda/index.ts",
      handler: "handler",
      runtime: Runtime.PROVIDED_AL2,
      layers: [layer],
    });

Then cdk deploy fails with

Error: Only `NODEJS` runtimes are supported.

This is because my code uses NodejsFunction. I think, it needs to change to be

const fn = new Function(this, "BunFunction", {
      runtime: Runtime.PROVIDED_AL2,
      handler: "index.handler",
      code: Code.fromAsset(path.join(__dirname, "lambda")),
      layers: [layer],
    });

The line where I am confused is

code: Code.fromAsset(path.join(__dirname, "lambda")),

Should this be direct path to .ts fil? As per Step 2 in documentation, it seems not. So, I am wondering what I need to do to make it work.

I hope this gives some clarity on where I need help. Thanks

from bun.

I sat down again to resume this activity. I fixed now and here are my changes.
These are now in main branch for anyone to be able to use it

from bun.