es-class

A future proof, backward compatible, JavaScript class utility.

v2.1.1 URL: https://unpkg.com/es-class@2.1.1/build/es-class.npm.js

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ES3 ES5 ES6 ES2015 ES7 KISS Class inheritance prototypal prototype simple lightweight mixin trait

mixto

A mixin superclass. Its subclasses have `.extend` and `.includeInto` methods to mix behavior into other objects and classes.

v1.0.0 URL: https://unpkg.com/mixto@1.0.0/lib/mixin.js

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@rustable/trait

A TypeScript library that implements Rust-like traits with compile-time type checking and runtime verification.

v0.4.12 URL: https://unpkg.com/@rustable/trait@0.4.12/lib/index.js

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typescript rust trait interface type-safe compile-time runtime-verification polymorphism decorator derive macro

mutrait

A simple, powerful trait applier for ES6+ classes

v1.0.1 URL: https://unpkg.com/mutrait@1.0.1/index.js

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trait traits mixin mixins classes

troop

Full-featured, testable OOP

v0.9.0 URL: https://unpkg.com/troop@0.9.0/troop.js

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oop class classical inheritance trait traits testing mocks memoization surrogate surrogates