This function contains external libraries. Uploading a new file will override these libraries.

[jamiechong]

When I view the browserfied lambda file on AWS I get this Warning:

This function contains external libraries. Uploading a new file will override these libraries.

The function seems to work correctly as all dependencies are within the single file. But I'm wondering what is triggering this warning?

[jamiechong]

If I copy and paste the function code that is uploaded via serverless into a new Lambda function via AWS UI, I don't see this warning. Furthermore, the code size of the function I manually created is 25% smaller! The functions are (presumably) identical. Thoughts? Maybe something to do with compression?