# Uppercase

`import { Uppercase } from "destack:types";`

Map each string in `S` to its uppercase form.

```ds title="Uppercase"
export type Uppercase<S: string> = intrinsic
```

[language/library/src/types/string.ds:3](https://github.com/destack-sh/destack/blob/main/language/library/src/types/string.ds#L3)