terrascan does not handle default value for optional type

[arongate]

terraform fails for optional type with default value

example

variable "my_var" {
  type = object({
    name = string
    value = optional(string,null)
  })
}

terrascan command will return the following type of error

Scan Errors -

        IaC Type            :   terraform
        Directory           :   /project/terraform/security
        Error Message       :   failed to build unified config. errors:
/tmp/9gjrga/variables.tf:27,27-41: Invalid type specification; Optional attribute modifier expects only one argument: the attribute type.
/tmp/9gjrga/variables.tf:39,27-41: Invalid type specification; Optional attribute modifier expects only one argument: the attribute type.
/tmp/9gjrga/variables.tf:52,32-46: Invalid type specification; Optional attribute modifier expects only one argument: the attribute type.