stampit-org/stampit

Health v2 · maintenance only

Adoption not part of the score

3009 stars · 102 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Stampit is a tiny (1.3KB gzipped) JavaScript/TypeScript library for building composable object factories called 'stamps', which merge methods, properties, deep properties, initializers, and statics via a standardized composition algorithm. It serves as a flexible alternative to ES6 classes, combining delegation, concatenation, and functional prototypal inheritance without class inheritance chains.

Use cases

• compose objects from reusable behaviors in javascript
• replace class inheritance with object composition
• create factory functions with mixin-like behavior merging
• implement multiple inheritance in javascript without prototype chains
• do dependency injection through composable factories
• share stateful behavior between browser and node code

When to choose

• You want composition over inheritance with a standardized, well-specified algorithm and a <2KB footprint
• You need to merge methods, properties, and initializers from many behaviors without class-chain coupling
• You need a single module that works in browsers, Node, and bundlers with both ESM and CJS

When to avoid

• Your codebase is firmly TypeScript class-based and you don't need runtime behavior composition
• You expect framework-level features like reactive state, rendering, or lifecycle hooks beyond initializers
• Your team is unwilling to learn the stamps specification and its composition semantics

Facets

library · maturity stable

developer-tools developer-tools web-development browser oop object-composition factory-functions stamps mixins prototypal-inheritance dependency-injection composition-over-inheritance typescript esm nodejs

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