Stampit is a JavaScript library that provides composable object factories through a standardized stamp specification.
The library addresses the complexity of prototypal inheritance in JavaScript by offering a lightweight, composable approach to object creation. Rather than relying on traditional class hierarchies or prototype chains, Stampit uses stamp functions that combine three kinds of prototypal inheritance: delegation, concatenation, and functional inheritance. This allows developers to compose behaviors from multiple sources and create objects with privileged methods and private data in a straightforward way.
Stampit suits projects where flexible object composition matters more than rigid class structures. It works well for codebases that need to mix and match behaviors across unrelated object types without deep inheritance chains. The library is particularly useful when you need to share private data and methods across composed objects, a pattern that is awkward to express with standard JavaScript classes or prototype-based inheritance alone.
The project maintains active development with regular updates across multiple major versions, each introducing breaking changes to align with evolving stamp specification standards. The codebase includes both unit tests and benchmark tests to validate correctness and performance. The library remains minimal in size, delivering its functionality in a small footprint suitable for inclusion in production applications.
