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

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Install with npm:

$ npm install --save clone-deep

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' }]

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 isPlainObjectisPlainObject). If instanceClone is not specified, this library will not attempt to clone non-plain objects, and will simply copy the object reference.

Initially based on mout's implementation of deepClone.

$ npm install && npm test

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

You might also be interested in these projects:

• is-plain-object: Returns true if an object was created by the Object constructor. | 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

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Copyright © 2018, Jon Schlinkert. Released under the MIT License.

This file was generated by verb-generate-readme, v0.8.0, on November 21, 2018.