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117 lines
4.7 KiB
Markdown
117 lines
4.7 KiB
Markdown
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# 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)
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> Define a non-enumerable property on an object. Uses Reflect.defineProperty when available, otherwise Object.defineProperty.
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Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support.
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## Install
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Install with [npm](https://www.npmjs.com/):
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```sh
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$ npm install --save define-property
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```
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## Release history
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See [the CHANGELOG](changelog.md) for updates.
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## Usage
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**Params**
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* `object`: The object on which to define the property.
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* `key`: The name of the property to be defined or modified.
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* `value`: The value or descriptor of the property being defined or modified.
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```js
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var define = require('define-property');
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var obj = {};
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define(obj, 'foo', function(val) {
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return val.toUpperCase();
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});
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// by default, defined properties are non-enumberable
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console.log(obj);
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//=> {}
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console.log(obj.foo('bar'));
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//=> 'BAR'
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```
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**defining setters/getters**
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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).
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```js
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define(obj, 'foo', {
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set: function() {},
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get: function() {}
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});
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```
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## About
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<details>
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<summary><strong>Contributing</strong></summary>
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Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
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</details>
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<details>
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<summary><strong>Running Tests</strong></summary>
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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:
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```sh
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$ npm install && npm test
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```
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</details>
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<details>
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<summary><strong>Building docs</strong></summary>
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_(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.)_
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To generate the readme, run the following command:
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```sh
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$ npm install -g verbose/verb#dev verb-generate-readme && verb
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```
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</details>
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### Related projects
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You might also be interested in these projects:
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* [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.")
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* [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.")
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* [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.")
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* [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.")
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### Contributors
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| **Commits** | **Contributor** |
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| --- | --- |
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| 28 | [jonschlinkert](https://github.com/jonschlinkert) |
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| 1 | [doowb](https://github.com/doowb) |
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### Author
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**Jon Schlinkert**
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* Connect with me on [linkedin/in/jonschlinkert](https://linkedin.com/in/jonschlinkert)
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* Follow me on [github/jonschlinkert](https://github.com/jonschlinkert)
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* Follow me on [twitter/jonschlinkert](https://twitter.com/jonschlinkert)
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### License
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Copyright © 2018, [Jon Schlinkert](https://github.com/jonschlinkert).
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Released under the [MIT License](LICENSE).
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***
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_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on January 25, 2018._
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