VPC Configuration: Incorrect type. Expected Aws_CF_Function

[phmasek]

I get an error when trying to setup the configuration for VPC.

vpc:
  subnetIds:
    - ${self:custom.mongodb.subnet_id.${self:provider.stage}} // <-- Incorrect type. Expected "CFIntrinsicFunctionBase64 | CFIntrinsicFunctionCIDR | CFIntrinsicFunctionFindInMap | CFIntrinsicFunctionGetAttribute | CFIntrinsicFunctionGetAvailabilityZones | CFIntrinsicFunctionImportValue | CFIntrinsicFunctionJoin | object(CFIntrinsicFunctionRef) | CFIntrinsicFunctionSelect | CFIntrinsicFunctionSplit | CFIntrinsicFunctionSub | CFIntrinsicFunctionCovertToJsonString".
  securityGroupIds:
    - ${self:custom.mongodb.security_group_id.${self:provider.stage}} // <-- Incorrect type. Expected "CFIntrinsicFunctionBase64 | CFIntrinsicFunctionCIDR | CFIntrinsicFunctionFindInMap | CFIntrinsicFunctionGetAttribute | CFIntrinsicFunctionGetAvailabilityZones | CFIntrinsicFunctionImportValue | CFIntrinsicFunctionJoin | object(CFIntrinsicFunctionRef) | CFIntrinsicFunctionSelect | CFIntrinsicFunctionSplit | CFIntrinsicFunctionSub | CFIntrinsicFunctionCovertToJsonString".

Official documentation only mentions using array of strings.
Not sure why these are set to expect Cloudformation functions? Is there some other way to configure this?

json-schema/serverless/reference.json

Lines 1552 to 1569 in f5c51d5

	"AwsVpc": {
	"properties": {
	"securityGroupIds": {
	"items": {
	"$ref": "components/cf.functions.json#/Aws_CF_Function"
	},
	"type": "array"
	},
	"subnetIds": {
	"items": {
	"$ref": "components/cf.functions.json#/Aws_CF_Function"
	},
	"type": "array"
	}
	},
	"type": "object",
	"required": ["securityGroupIds", "subnetIds"]
	},

[adamghowiba]

This would be a huge help for us.

Facing this same issue, not sure how to work around it aside from just ignoring the error in the serverless.yml config.

I'm also just using an array of strings, nothing fancy

vpc:
    securityGroupIds:
      - sg-08ddc5de489de1870
    subnetIds:
      - subnet-0bd3103df9c6b72e7
      - subnet-0fda3d05946d16509
      - subnet-01ea0d8230da6b492

[phmasek]

Not sure if it's helpful @adamghowiba, this is how I worked around this where the variable is a comma separated string.