clone-deep

Recursively (deep) clone JavaScript native types, like Object, Array, RegExp, Date as well as primitives.

Please consider following this project’s author, Jon Schlinkert, and consider starring the project to show your :heart: and support.

Install

Install with npm:

$ npm install --save clone-deep

Sponsors

The following companies, organizations, and individuals support the ongoing maintenance and development of clone-deep. Become a Sponsor to add your logo to this README, or any of my other projects

Gold Sponsors

https://jaake.tech/

Usage

const cloneDeep = require('clone-deep');

let obj = { a: 'b' };
let arr = [obj];
let copy = cloneDeep(arr);
obj.c = 'd';

console.log(copy);
//=> [{ a: 'b' }]

console.log(arr);
//=> [{ a: 'b', c: 'd' }]

Heads up!

The last argument specifies whether or not to clone instances (objects that are from a custom class or are not created by the Object constructor. This value may be true or the function use for cloning instances.

When an instanceClone function is provided, it will be invoked to clone objects that are not “plain” objects (as defined by isPlainObject). If instanceClone is not specified, this library will not attempt to clone non-plain objects, and will simply copy the object reference.

Attribution

Initially based on mout’s implementation of deepClone.

About

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.

Running Tests

Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:

$ npm install && npm test

Building docs

(This project’s readme.md is generated by verb, please don’t edit the readme directly. Any changes to the readme must be made in the .verb.md readme template.)

To generate the readme, run the following command:

$ npm install -g verbose/verb#dev verb-generate-readme && verb

Related projects

You might also be interested in these projects:

• is-plain-object: Returns true if an object was created by the Object constructor, or Object.create(null). | homepage
• isobject: Returns true if the value is an object and not an array or null. | homepage
• kind-of: Get the native type of a value. | homepage
• shallow-clone: Creates a shallow clone of any JavaScript value. | homepage

Contributors

Commits Contributor 49 jonschlinkert 2 yujunlong2000

Author

Jon Schlinkert

• GitHub Profile
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• LinkedIn Profile

License

Copyright © 2023, Jon Schlinkert. Released under the MIT License.

This file was generated by verb-generate-readme, v0.8.0, on July 12, 2023.