# define-property
> Define a non-enumerable property on an object. Uses Reflect.defineProperty when available, otherwise Object.defineProperty.
Latest version **2.0.2** (published 2018-01-26) · MIT license · 0 weekly downloads
## Install
```sh
npm install define-property
pnpm add define-property
yarn add define-property
bun add define-property
```
## Health
**Score 15/100 (F)** — status: abandoned.
Positive: no vulnerabilities.
Warnings: low downloads; no types; no esm support.
Negative: abandoned; low maintenance score.
## Facts
| | |
|---|---|
| Version | 2.0.2 |
| Published | 2018-01-26 |
| First published | 2015-08-13 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | CommonJS |
| Node | >=0.10.0 |
| Dependencies | 2 |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 21 |
| Author | Jon Schlinkert |
| Maintainers | doowb, jonschlinkert |
| Keywords | define, define-property, enumerable, key, non, non-enumerable, object, prop, property, value |
## Links
- npm: https://www.npmjs.com/package/define-property
- Repository: https://github.com/jonschlinkert/define-property
- Issues: https://github.com/jonschlinkert/define-property/issues
- npm.io page: https://npm.io/package/define-property
## Dependencies (2)
- [isobject](https://npm.io/package/isobject.md) ^3.0.1
- [is-descriptor](https://npm.io/package/is-descriptor.md) ^1.0.2
## Recent versions
- 2.0.2 (latest) — 2018-01-26
- 2.0.1 — 2018-01-25
- 2.0.0 — 2017-11-26
- 1.0.0 — 2017-04-20
- 0.2.5 — 2015-08-31
- 0.2.3 — 2015-08-29
- 0.2.2 — 2015-08-28
- 0.2.1 — 2015-08-27
- 0.2.0 — 2015-08-27
- 0.1.3 — 2015-08-13
- 0.1.2 — 2015-08-13
- 0.1.0 — 2015-08-13
## README
# define-property [](https://www.npmjs.com/package/define-property) [](https://npmjs.org/package/define-property) [](https://npmjs.org/package/define-property) [](https://travis-ci.org/jonschlinkert/define-property)
> Define a non-enumerable property on an object. Uses Reflect.defineProperty when available, otherwise Object.defineProperty.
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 define-property
```
## Release history
See [the CHANGELOG](changelog.md) for updates.
## Usage
**Params**
* `object`: The object on which to define the property.
* `key`: The name of the property to be defined or modified.
* `value`: The value or descriptor of the property being defined or modified.
```js
var define = require('define-property');
var obj = {};
define(obj, 'foo', function(val) {
return val.toUpperCase();
});
// by default, defined properties are non-enumberable
console.log(obj);
//=> {}
console.log(obj.foo('bar'));
//=> 'BAR'
```
**defining setters/getters**
Pass the same properties you would if using [Object.defineProperty](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty) or [Reflect.defineProperty](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Reflect/defineProperty).
```js
define(obj, 'foo', {
set: function() {},
get: function() {}
});
```
## About
Contributing
Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
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:
```sh
$ npm install && npm test
```
Building docs
_(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
```
### Related projects
You might also be interested in these projects:
* [assign-deep](https://www.npmjs.com/package/assign-deep): Deeply assign the enumerable properties and/or es6 Symbol properies of source objects to the target… [more](https://github.com/jonschlinkert/assign-deep) | [homepage](https://github.com/jonschlinkert/assign-deep "Deeply assign the enumerable properties and/or es6 Symbol properies of source objects to the target (first) object.")
* [extend-shallow](https://www.npmjs.com/package/extend-shallow): Extend an object with the properties of additional objects. node.js/javascript util. | [homepage](https://github.com/jonschlinkert/extend-shallow "Extend an object with the properties of additional objects. node.js/javascript util.")
* [merge-deep](https://www.npmjs.com/package/merge-deep): Recursively merge values in a javascript object. | [homepage](https://github.com/jonschlinkert/merge-deep "Recursively merge values in a javascript object.")
* [mixin-deep](https://www.npmjs.com/package/mixin-deep): Deeply mix the properties of objects into the first object. Like merge-deep, but doesn't clone. | [homepage](https://github.com/jonschlinkert/mixin-deep "Deeply mix the properties of objects into the first object. Like merge-deep, but doesn't clone.")
### Contributors
| **Commits** | **Contributor** |
| --- | --- |
| 28 | [jonschlinkert](https://github.com/jonschlinkert) |
| 1 | [doowb](https://github.com/doowb) |
### Author
**Jon Schlinkert**
* Connect with me on [linkedin/in/jonschlinkert](https://linkedin.com/in/jonschlinkert)
* Follow me on [github/jonschlinkert](https://github.com/jonschlinkert)
* Follow me on [twitter/jonschlinkert](https://twitter.com/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), v0.6.0, on January 25, 2018._
---
_Source: https://npm.io/package/define-property · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._