Deno.serve timeouts on AWS lambda

[piotrgrundas]

Version: Deno 2.0.6

I'm trying to deploy a complied deno project into AWS Lambda. I'm using Hono, and in the docs, they are using Deno.serve.
The problem is that lambda timeouts and returns Internal Server Error.

After investigating the problem it seems that the Deno.serve is causing this.

In the log I can see:

2024-11-20T09:22:13.960Z | Listening on http://0.0.0.0:8000/
2024-11-20T09:22:22.838Z | EXTENSION Name: lambda-adapter State: Ready Events: []
2024-11-20T09:22:22.838Z | INIT_REPORT Init Duration: 9999.92 ms Phase: init Status: timeout

Steps:

1. Create a main.ts with Deno.serve((req) => new Response("Hello World!"));
2. Build & deploy the app:

deno compile -A --target x86_64-unknown-linux-gnu --no-check -o bootstrap main.ts && chmod +x ./bootstrap && zip -r -D artifact.zip bootstrap && aws lambda update-function-code --region eu-central-1 --function-name deno-compiled --zip-file fileb://artifact.zip

3. Remember to add lambda layer adapter arn:aws:lambda:eu-central-1:753240598075:layer:LambdaAdapterLayerX86:23.

I know there is a dockerised approach for deploying Deno, but I don't want to use it because it uses too much memory.

If you take an oak example from aws-lambda-web-adapter examples, compile it, and deploy it to AWS Lambda - it works.