pattern must be a valid regex error in AWS::Amplify::App

[mkuzmin]

I'm trying to use NewResourceJsonSchemaDocument() with AWS::Amplify::App type.
it raises loading JSON Schema ( {...} ): pattern must be a valid regex error.

Here is the schema I'm getting from CloudFormation: https://gist.github.com/mkuzmin/3930399866df2f8659b357f16bf9d58a

Did AWS break something, so I should report it to https://github.com/aws-cloudformation/cloudformation-coverage-roadmap ?

[ewbankkit]

@mkuzmin It's probably related to differences between the regex syntax supported by CFN schemas/JSON schema (I think it's the JavaScript flavor) and what Go supports: #5.
Take a look at sanitize.go.