Error handling doesn't work with latest middy

[marcoturi]

With"@middy/core": "4.4.0" error are not thrown correctly.

middy-appsync/src/appSync.ts

Line 39 in 14f40b0

return false;

I suppose here lies the problem. The new version of middy doesn't expect that return, you should return just the response like this:

  .onError(async (request) => {
    const error = request.error as any;
    return {
      data: error?.data,
      errorInfo: error?.info,
      errorType: error?.type,
      errorMessage: error?.message,
    };
  });