This package contains Typescript definitions for CSSO (CSS Optimizer). CSSO is a CSS minifier that performs structural optimizations alongside standard property-level minifications. Using these definitions, you can leverage CSSO's powerful optimization capabilities within your TypeScript projects, ensuring type safety and improved code completion. The definitions describe the API and interfaces for working with CSSO, allowing for seamless integration into build pipelines and related tooling.
The @types/csso npm package has sporadic releases. Initially, there were a couple of releases in 2018, followed by a long period of inactivity until mid-2021. December 2021 saw version 5.0.0. There were four releases between September and December 2023. There have been no releases in 2024 or 2025 so far.
@types/csso downloads show strong growth from March 2024 to June 2025, peaking at 331,316. Downloads remained high in July and August 2025, before a significant drop in September, likely reflecting incomplete data for the current month. Overall, usage of the package has demonstrably increased over the observed period.
