CDK: The function must be in region 'us-east-1'

[andreialecu]

Issue Summary

I've been recently testing this library and our stacks are in eu-west-1. Seems that deployment fails with:

15:00:45 | CREATE_IN_PROGRESS   | AWS::CloudFormation::Stack                      | TestStack
15:02:57 | CREATE_FAILED        | AWS::CloudFront::Distribution                   | NextJsApp/NextJSDistribution
Resource handler returned message: "Invalid request provided: The function must be in region 'us-east-1'. ARN: arn:aws:lambda:eu-central-1:...

Actual behavior

CDK deployment fails.

Expected behavior

CDK deployment should succeed

Steps to reproduce

Create a CDK stack that's not in the us-east-1 region.

Versions

• @sls-next/serverless-component version: 3.7.0-alpha.0

Checklist

• You have reviewed the README and FAQs, which answers several common questions.
• You have reviewed our DEBUGGING wiki and have tried your best to include complete information and reproduction steps (including your configuration) as is possible. As there is only one maintainer (who maintains this in his free time) and thus very limited resources, if you have time, please try to debug the issue a bit yourself if possible.
• You have first tried using the most recent latest or alpha @sls-next/serverless-component release version, which may have already fixed your issue or implemented the feature you are trying to use. Note that the old serverless-next.js component and the serverless-next.js plugin are deprecated and no longer maintained.

[andreialecu]

Related: #951

[shishkin]

This probably would require a nested CDK stack created in us-east-1 for the functions, while the rest of the construct can remain in the region defined by the containing user stack. It seems that only stacks can define a region.

[kiernan]

There now appears to be an experimental construct in CDK which can create the lambda@edge functions in us-east-1 despite the stack being deployed to a different region: https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_cloudfront.experimental.EdgeFunction.html