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mixin-deep Donate NPM version NPM monthly downloads NPM total downloads Linux Build Status

Deeply mix the properties of objects into the first object. Like merge-deep, but doesn't clone. No dependencies.

Please consider following this project's author, Jon Schlinkert, and consider starring the project to show your ❤️ and support.


Install with npm:

$ npm install --save mixin-deep

Heads up!

Please update to version 2.0.1 or later, a critical bug was fixed in that version.


const mixin = require('mixin-deep');
const res = mixin({ a: { foo: true } }, { a: { bar: true } }, { a: { baz: true } });
//=> { a: { foo: true, bar: true, baz: true } }



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 is generated by verb, please don't edit the readme directly. Any changes to the readme must be made in the 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:


Commits Contributor
28 jonschlinkert
2 doowb


Jon Schlinkert


Copyright © 2019, Jon Schlinkert. Released under the MIT License.

This file was generated by verb-generate-readme, v0.8.0, on June 19, 2019.

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