Type Alias KeyToScreamingSnakeCaseKey<T, ValueDelimiter>

KeyToScreamingSnakeCaseKey: T extends object
    ? {
        [Key in keyof T]: Key extends string
            ? Join<
                Split<ScreamingSnakeCase<Key>, "."> extends string[]
                    ? Split<ScreamingSnakeCase<Key>, ".">
                    : never,
                ValueDelimiter extends string ? ValueDelimiter : never,
            >
            : never
    }
    : never