What is the feature/improvement you would like?

The following APIs are promisified at the module scope of compression.ts

const zlibInflate = promisify(zlib.inflate.bind(zlib));
const zlibDeflate = promisify(zlib.deflate.bind(zlib));
gunZipSync(...)

But they could be moved into the code path that needs them.

Saslprep

Saslprep unzips code-point data upon importing using the gunZipSync API. We should at least nest the usage into the functions that need it (cache the result).

Consider a follow-up or alternative to using zlib for salsprep so it can work in other JS environments.

What use case would this feature/improvement enable?

Moving the usage into the compression path that utilizes these APIs allows for one less module needing to exist in order to have a functioning driver.