lighter-type

A lightweight JavaScript inheritance utility.
v2.2.1 URL: https://unpkg.com/lighter-type@2.2.1/lighter-type.js
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lightertypeobjectinheritanceprototypeprototypalmultipleswissmixinextenddecorateinitconstructorhiddenenumerablepropertiesfastlightweightminimalresigclassclassyutilinheritsmodeloaugmentfiberklassprotoextendsdecoratorsupersubconstructlightweightbenchmarksbenchmarkbenchoptimizeoptimized

multiple-extend

Multiple inheritance for Javascript ES6
v0.2.0 URL: https://unpkg.com/multiple-extend@0.2.0/lib/index.js
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javascriptmultipleextendinheritance

selfish

Class-free, pure prototypal multiple inheritance
v1.1.0 URL: https://unpkg.com/selfish@1.1.0/selfish.js
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oopmultipleinheritanceprototypeclassmicroclass-free

@kbravh/multi-class

Easy multiple inheritance and composition in JavaScript.
v1.0.7 URL: https://unpkg.com/@kbravh/multi-class@1.0.7/index.js
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multipleclassesinheritancecomposition

mixin-pro

Javascript multi-inheritance with mixin for code reuse
v0.6.7 URL: https://unpkg.com/mixin-pro@0.6.7/mixin.js
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mixininheritmulti-inheritextendmultiplerjfun