Nuxt 3.0.0-rc.9 with Nitro 0.5.0 configuration error: Malformed Lambda proxy response

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 (https://github.com/unjs/nitro/pull/357#issuecomment-1247562089), 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.

• https://github.com/unjs/nitro/pull/357
• https://github.com/unjs/nitro/issues/245

Logs

No response

[danielroe]

Yes, Nitro presets are fully extensible. Copy this file into your project, make the necessary changes, and set nitro.entry to point to your changed file…

(Of course, we do plan to fix the issue in Nitro itself!)

[datake914]

@timmak I am using Nuxt 3.0.0-rc.11 with Nitro 0.5.4 and it works fine.

I specify in nuxt.config.ts to use custom nitro.entry.ts only when process.env.NODE_ENV is production.

  nitro: {
    preset: 'aws-lambda',
    serveStatic: false,
    entry: process.env.NODE_ENV === 'production' ? 'nitro.entry.ts' : undefined,
  },