is-data-descriptor

WebJar for is-data-descriptor

License

License

MIT
Categories

Categories

Data
GroupId

GroupId

org.webjars.bowergithub.jonschlinkert
ArtifactId

ArtifactId

is-data-descriptor
Last Version

Last Version

0.1.4
Release Date

Release Date

Type

Type

jar
Description

Description

is-data-descriptor
WebJar for is-data-descriptor
Project URL

Project URL

http://webjars.org
Source Code Management

Source Code Management

https://github.com/jonschlinkert/is-data-descriptor

Download is-data-descriptor

How to add to project

<!-- https://jarcasting.com/artifacts/org.webjars.bowergithub.jonschlinkert/is-data-descriptor/ -->
<dependency>
    <groupId>org.webjars.bowergithub.jonschlinkert</groupId>
    <artifactId>is-data-descriptor</artifactId>
    <version>0.1.4</version>
</dependency>
// https://jarcasting.com/artifacts/org.webjars.bowergithub.jonschlinkert/is-data-descriptor/
implementation 'org.webjars.bowergithub.jonschlinkert:is-data-descriptor:0.1.4'
// https://jarcasting.com/artifacts/org.webjars.bowergithub.jonschlinkert/is-data-descriptor/
implementation ("org.webjars.bowergithub.jonschlinkert:is-data-descriptor:0.1.4")
'org.webjars.bowergithub.jonschlinkert:is-data-descriptor:jar:0.1.4'
<dependency org="org.webjars.bowergithub.jonschlinkert" name="is-data-descriptor" rev="0.1.4">
  <artifact name="is-data-descriptor" type="jar" />
</dependency>
@Grapes(
@Grab(group='org.webjars.bowergithub.jonschlinkert', module='is-data-descriptor', version='0.1.4')
)
libraryDependencies += "org.webjars.bowergithub.jonschlinkert" % "is-data-descriptor" % "0.1.4"
[org.webjars.bowergithub.jonschlinkert/is-data-descriptor "0.1.4"]

Dependencies

compile (1)

Group / Artifact Type Version
org.webjars.bowergithub.jonschlinkert : kind-of jar [3.0.2,4)

Project Modules

There are no modules declared in this project.

is-data-descriptor NPM version NPM monthly downloads NPM total downloads Linux Build Status

Returns true if a value has the characteristics of a valid JavaScript data descriptor.

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

Install

Install with npm:

$ npm install --save is-data-descriptor

Usage

var isDataDesc = require('is-data-descriptor');

Examples

true when the descriptor has valid properties with valid values.

// `value` can be anything
isDataDesc({value: 'foo'})
isDataDesc({value: function() {}})
isDataDesc({value: true})
//=> true

false when not an object

isDataDesc('a')
//=> false
isDataDesc(null)
//=> false
isDataDesc([])
//=> false

false when the object has invalid properties

isDataDesc({value: 'foo', bar: 'baz'})
//=> false
isDataDesc({value: 'foo', bar: 'baz'})
//=> false
isDataDesc({value: 'foo', get: function(){}})
//=> false
isDataDesc({get: function(){}, value: 'foo'})
//=> false

false when a value is not the correct type

isDataDesc({value: 'foo', enumerable: 'foo'})
//=> false
isDataDesc({value: 'foo', configurable: 'foo'})
//=> false
isDataDesc({value: 'foo', writable: 'foo'})
//=> false

Valid properties

The only valid data descriptor properties are the following:

  • configurable (required)
  • enumerable (required)
  • value (optional)
  • writable (optional)

To be a valid data descriptor, either value or writable must be defined.

Invalid properties

A descriptor may have additional invalid properties (an error will not be thrown).

var foo = {};

Object.defineProperty(foo, 'bar', {
  enumerable: true,
  whatever: 'blah', // invalid, but doesn't cause an error
  get: function() {
    return 'baz';
  }
});

console.log(foo.bar);
//=> 'baz'

About

Contributing

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

Contributors

Commits Contributor
21 jonschlinkert
2 realityking

Author

Jon Schlinkert

License

Copyright © 2017, Jon Schlinkert. Released under the MIT License.


This file was generated by verb-generate-readme, v0.6.0, on November 01, 2017.

Versions

Version
0.1.4