[F] checkDuplicateTypeName

function checkDuplicateTypeName(
   program,
   type,
   name,
   existing): void;

Check the given name is not already specific in the existing map. Report a diagnostic if it is.

Parameters

Parameter	Type	Description
program	Program	Program
type	Type	Type with the name to check
name	string	Name to check
existing	Record<string, unknown> | undefined	Existing map of name

Returns

void