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- # clone-deep [](https://www.npmjs.com/package/clone-deep) [](https://npmjs.org/package/clone-deep) [](https://npmjs.org/package/clone-deep) [](https://travis-ci.org/jonschlinkert/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](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support.
-
- ## Install
-
- Install with [npm](https://www.npmjs.com/):
-
- ```sh
- $ npm install --save clone-deep
- ```
-
- ## Usage
-
- ```js
- 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](#isPlainObject)`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](https://github.com/mout/mout) implementation of deepClone.
-
- ## About
-
- <details>
- <summary><strong>Contributing</strong></summary>
-
- Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
-
- </details>
-
- <details>
- <summary><strong>Running Tests</strong></summary>
-
- 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:
-
- ```sh
- $ npm install && npm test
- ```
-
- </details>
-
- <details>
- <summary><strong>Building docs</strong></summary>
-
- _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_
-
- To generate the readme, run the following command:
-
- ```sh
- $ npm install -g verbose/verb#dev verb-generate-readme && verb
- ```
-
- </details>
-
- ### Related projects
-
- You might also be interested in these projects:
-
- * [is-plain-object](https://www.npmjs.com/package/is-plain-object): Returns true if an object was created by the `Object` constructor. | [homepage](https://github.com/jonschlinkert/is-plain-object "Returns true if an object was created by the `Object` constructor.")
- * [isobject](https://www.npmjs.com/package/isobject): Returns true if the value is an object and not an array or null. | [homepage](https://github.com/jonschlinkert/isobject "Returns true if the value is an object and not an array or null.")
- * [kind-of](https://www.npmjs.com/package/kind-of): Get the native type of a value. | [homepage](https://github.com/jonschlinkert/kind-of "Get the native type of a value.")
- * [shallow-clone](https://www.npmjs.com/package/shallow-clone): Creates a shallow clone of any JavaScript value. | [homepage](https://github.com/jonschlinkert/shallow-clone "Creates a shallow clone of any JavaScript value.")
-
- ### Contributors
-
- | **Commits** | **Contributor** |
- | --- | --- |
- | 46 | [jonschlinkert](https://github.com/jonschlinkert) |
- | 2 | [yujunlong2000](https://github.com/yujunlong2000) |
-
- ### Author
-
- **Jon Schlinkert**
-
- * [GitHub Profile](https://github.com/jonschlinkert)
- * [Twitter Profile](https://twitter.com/jonschlinkert)
- * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert)
-
- ### License
-
- Copyright © 2018, [Jon Schlinkert](https://github.com/jonschlinkert).
- Released under the [MIT License](LICENSE).
-
- ***
-
- _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on November 21, 2018._
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