Typeservicesv0.8.2IsExactOptionalPropertyTypesEnabledIndicates the value of exactOptionalPropertyTypesexactOptionalPropertyTypes compiler option. type IsExactOptionalPropertyTypesEnabled = [ (string | undefined)? ] extends [string?] ? false : true;type IsExactOptionalPropertyTypesEnabled = [ (string | undefined)? ] extends [string?] ? false : true;