Environment

Nuxt 3.0.0-rc.9 with Nitro 0.5.0

Reproduction

I build the Nuxt app with aws-lambda deployment setting and configured Amazon API Gateway proxy integration to work with this lambda function.
When I call my endpoint, I receive a configuration error and an HTTP 502 status code.

Execution failed due to configuration error: Malformed Lambda proxy response

Describe the bug

As I commented in the PR (#357 (comment)), this is due to the fact that cookies are returned in the response object.

For API Gateway to handle a Lambda function's response, the function must return output according to the following JSON format. Additional fields are not allowed.

{
    "isBase64Encoded": true|false,
    "statusCode": httpStatusCode,
    "headers": { "headerName": "headerValue", ... },
    "body": "..."
}

cf. https://aws.amazon.com/premiumsupport/knowledge-center/malformed-502-api-gateway/?nc1=h_ls

Additional context

Related Issues and PRs are as follows.

• fix(aws-lambda): return outgoing cookies on response objects #357
• aws-lambda preset should use cookies vs set-cookie header in response #245

Logs

No response