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

extend

Port of jQuery.extend for node.js and the browser

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

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extend clone merge

deepmerge

A library for deep (recursive) merging of Javascript objects

v4.3.1 URL: https://unpkg.com/deepmerge@4.3.1/dist/cjs.js

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merge deep extend copy clone recursive

@ungap/structured-clone

A structuredClone polyfill

v1.3.0 URL: https://unpkg.com/@ungap/structured-clone@1.3.0/cjs/index.js

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recursion structured clone algorithm

rfdc

Really Fast Deep Clone

v1.4.1 URL: https://unpkg.com/rfdc@1.4.1/index.js

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object obj properties clone copy deep recursive key keys values prop deep-clone deepclone deep-copy deepcopy fast performance performant fastclone fastcopy fast-clone fast-deep-clone fast-copy fast-deep-copy