css-vars-ponyfill

Client-side support for CSS custom properties (aka "CSS variables") in legacy and modern browsers

v2.4.9 URL: https://unpkg.com/css-vars-ponyfill@2.4.9/dist/css-vars-ponyfill.min.js

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hasown

A robust, ES3 compatible, "has own property" predicate.

v2.0.2 URL: https://unpkg.com/hasown@2.0.2/index.js

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has hasOwnProperty hasOwn has-own own has property in javascript ecmascript

extend-shallow

Extend an object with the properties of additional objects. node.js/javascript util.

v3.0.2 URL: https://unpkg.com/extend-shallow@3.0.2/index.js

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assign clone extend merge obj object object-assign object.assign prop properties property props shallow util utility utils value

gopd

`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation.

v1.2.0 URL: https://unpkg.com/gopd@1.2.0/index.js

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ecmascript javascript getownpropertydescriptor property descriptor

es-define-property

`Object.defineProperty`, but not IE 8's broken one.

v1.0.1 URL: https://unpkg.com/es-define-property@1.0.1/index.js

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javascript ecmascript object define property defineProperty Object.defineProperty