Add TypeScript types for types

**Feature request**
It would be great to have compression for validation.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_compression` with default `false`.

The issue names no files, tests, or entry points. Start by locating the configuration definition, validation path, and TypeScript type declarations; clarify whether the requested change is compression for validation or TypeScript typing before implementing. Done should include the requested config option with a default of false and corresponding validation behavior.

Written by the indexing model from the issue text.