[6a3a178] | 1 | # is-accessor-descriptor [![NPM version](https://img.shields.io/npm/v/is-accessor-descriptor.svg?style=flat)](https://www.npmjs.com/package/is-accessor-descriptor) [![NPM monthly downloads](https://img.shields.io/npm/dm/is-accessor-descriptor.svg?style=flat)](https://npmjs.org/package/is-accessor-descriptor) [![NPM total downloads](https://img.shields.io/npm/dt/is-accessor-descriptor.svg?style=flat)](https://npmjs.org/package/is-accessor-descriptor) [![Linux Build Status](https://img.shields.io/travis/jonschlinkert/is-accessor-descriptor.svg?style=flat&label=Travis)](https://travis-ci.org/jonschlinkert/is-accessor-descriptor)
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| 2 |
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| 3 | > Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.
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| 4 |
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| 5 | 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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| 6 |
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| 7 | ## Install
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| 8 |
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| 9 | Install with [npm](https://www.npmjs.com/):
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| 10 |
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| 11 | ```sh
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| 12 | $ npm install --save is-accessor-descriptor
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| 13 | ```
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| 14 |
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| 15 | ## Usage
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| 16 |
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| 17 | ```js
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| 18 | var isAccessor = require('is-accessor-descriptor');
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| 19 |
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| 20 | isAccessor({get: function() {}});
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| 21 | //=> true
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| 22 | ```
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| 23 |
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| 24 | You may also pass an object and property name to check if the property is an accessor:
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| 25 |
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| 26 | ```js
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| 27 | isAccessor(foo, 'bar');
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| 28 | ```
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| 29 |
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| 30 | ## Examples
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| 31 |
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| 32 | `false` when not an object
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| 33 |
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| 34 | ```js
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| 35 | isAccessor('a')
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| 36 | isAccessor(null)
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| 37 | isAccessor([])
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| 38 | //=> false
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| 39 | ```
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| 40 |
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| 41 | `true` when the object has valid properties
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| 42 |
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| 43 | and the properties all have the correct JavaScript types:
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| 44 |
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| 45 | ```js
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| 46 | isAccessor({get: noop, set: noop})
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| 47 | isAccessor({get: noop})
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| 48 | isAccessor({set: noop})
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| 49 | //=> true
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| 50 | ```
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| 51 |
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| 52 | `false` when the object has invalid properties
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| 53 |
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| 54 | ```js
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| 55 | isAccessor({get: noop, set: noop, bar: 'baz'})
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| 56 | isAccessor({get: noop, writable: true})
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| 57 | isAccessor({get: noop, value: true})
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| 58 | //=> false
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| 59 | ```
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| 60 |
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| 61 | `false` when an accessor is not a function
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| 62 |
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| 63 | ```js
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| 64 | isAccessor({get: noop, set: 'baz'})
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| 65 | isAccessor({get: 'foo', set: noop})
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| 66 | isAccessor({get: 'foo', bar: 'baz'})
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| 67 | isAccessor({get: 'foo', set: 'baz'})
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| 68 | //=> false
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| 69 | ```
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| 70 |
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| 71 | `false` when a value is not the correct type
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| 72 |
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| 73 | ```js
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| 74 | isAccessor({get: noop, set: noop, enumerable: 'foo'})
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| 75 | isAccessor({set: noop, configurable: 'foo'})
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| 76 | isAccessor({get: noop, configurable: 'foo'})
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| 77 | //=> false
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| 78 | ```
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| 79 |
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| 80 | ## About
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| 81 |
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| 82 | <details>
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| 83 | <summary><strong>Contributing</strong></summary>
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| 84 |
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| 85 | Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
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| 86 |
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| 87 | </details>
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| 88 |
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| 89 | <details>
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| 90 | <summary><strong>Running Tests</strong></summary>
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| 91 |
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| 92 | 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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| 93 |
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| 94 | ```sh
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| 95 | $ npm install && npm test
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| 96 | ```
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| 97 |
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| 98 | </details>
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| 99 |
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| 100 | <details>
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| 101 | <summary><strong>Building docs</strong></summary>
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| 102 |
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| 103 | _(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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| 104 |
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| 105 | To generate the readme, run the following command:
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| 106 |
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| 107 | ```sh
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| 108 | $ npm install -g verbose/verb#dev verb-generate-readme && verb
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| 109 | ```
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| 110 |
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| 111 | </details>
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| 112 |
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| 113 | ### Related projects
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| 114 |
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| 115 | You might also be interested in these projects:
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| 116 |
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| 117 | * [is-accessor-descriptor](https://www.npmjs.com/package/is-accessor-descriptor): Returns true if a value has the characteristics of a valid JavaScript accessor descriptor. | [homepage](https://github.com/jonschlinkert/is-accessor-descriptor "Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.")
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| 118 | * [is-data-descriptor](https://www.npmjs.com/package/is-data-descriptor): Returns true if a value has the characteristics of a valid JavaScript data descriptor. | [homepage](https://github.com/jonschlinkert/is-data-descriptor "Returns true if a value has the characteristics of a valid JavaScript data descriptor.")
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| 119 | * [is-descriptor](https://www.npmjs.com/package/is-descriptor): Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for… [more](https://github.com/jonschlinkert/is-descriptor) | [homepage](https://github.com/jonschlinkert/is-descriptor "Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.")
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| 120 | * [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.")
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| 121 | * [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.")
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| 122 |
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| 123 | ### Contributors
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| 124 |
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| 125 | | **Commits** | **Contributor** |
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| 126 | | --- | --- |
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| 127 | | 22 | [jonschlinkert](https://github.com/jonschlinkert) |
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| 128 | | 2 | [realityking](https://github.com/realityking) |
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| 129 |
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| 130 | ### Author
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| 131 |
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| 132 | **Jon Schlinkert**
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| 133 |
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| 134 | * [github/jonschlinkert](https://github.com/jonschlinkert)
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| 135 | * [twitter/jonschlinkert](https://twitter.com/jonschlinkert)
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| 136 |
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| 137 | ### License
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| 138 |
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| 139 | Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert).
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| 140 | Released under the [MIT License](LICENSE).
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| 141 |
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| 142 | ***
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| 143 |
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| 144 | _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on November 01, 2017._ |
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