Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

serverless-offline raises warning due to callback usage

See original GitHub issue

Describe the bug This bug is originally raised by @Strernd on gitter. When Laconia is used together with serverless-offline, it is raising a warning.

To Reproduce Use Laconia with serverless-offline

Expected behavior A clear and concise description of what you expected to happen.

Actual behavior A warning message generated by serverless-offline:

Serverless: Warning: handler 'laconia-handler' returned a promise and also uses a callback! | This is problematic and might cause issues in your lambda.

Additional context The callback is originally retained even though we support node 8 because of a problem in AWS Lambda. Seems like this problem is now fixed, see: https://stackoverflow.com/a/51988695/2464295

Issue Analytics

State:
Created 4 years ago
Reactions:1
Comments:10 (10 by maintainers)

Top GitHub Comments

1reaction

ceilforscommented, Nov 27, 2019

@hugosenari Good point. Another option is, we could introduce a configuration that we eventually deprecate i.e. LACONIA_NO_CALLBACK = true.

0reactions

hugosenaricommented, Feb 10, 2020

Fixed by #511 (v1.9.0) Now we can add LACONIA_NO_CALLBACK=‘true’ to env or omitting callback parameter.

Top Results From Across the Web

Serverless-offline throws "Configuration error" or "Cannot read ...

So in the root of the project, I installed serverless-offline: npm install serverless-offline. It threw several warnings during installation ...

Serverless Offline - Serverless Framework: Plugins

This Serverless plugin emulates AWS λ and API Gateway on your local machine to speed up your development cycles. To do so, it...

Serverless - FAQ | NestJS - A progressive Node.js framework

When an app is not in use, there are no computing resources allocated to the app. Pricing is based on the actual amount...

Wait using callbacks | Workflows - Google Cloud

Using a custom retry predicate, the workflow logs a warning when a timeout occurs and then retries the wait on the callback endpoint,...

AWS Step Functions - AWS Documentation

AWS SDK and Optimized integrations Standard and Express workflowsUse casesService ... AWS Step Functions is a serverless orchestration service that lets you ...