# Utils: Common types / utilities for specs [![cw-utils on crates.io](https://img.shields.io/crates/v/cw-utils.svg)](https://crates.io/crates/cw-utils) [![cw-utils on docs.rs](https://img.shields.io/docsrs/cw-utils.svg)](https://docs.rs/cw-utils) This is a collection of common types shared among many specs. For example `Expiration`, which is embedded in many places. Types should only be added here after they are duplicated in a second contract, not "because we might need it"