Cannot Find TypeScript Definitions

Hello!

Apologize for being a dingus on this.

I've tried
```bash
yarn add --registry=https://registry.npmjs.org @types/util
```

But this is what I get
```
dev ±✚  ⬡ v12.17.0  yarn add --registry=https://registry.npmjs.org @types/util
yarn add v1.22.5
[1/4] 🔍 Resolving packages...
error An unexpected error occurred: "https://registry.npmjs.org/@types%2futil: Not found".
info If you think this is a bug, please open a bug report with the information provided in "/Users/lknecht/Repositories/palantir-test-data-helpers/yarn-error.log".
info Visit https://yarnpkg.com/en/docs/cli/add for documentation about this command.
```

Can you provide guidance on how to add type definitions for this library?

Start with the reported Yarn command and the node-util package's TypeScript definitions status. Confirm whether this library provides or points to definitions, then document the supported way to add them or clearly explain that no definitions are available.

Written by the indexing model from the issue text.