1
|
# has-symbols <sup>[![Version Badge][2]][1]</sup>
|
2
|
|
3
|
[![Build Status][3]][4]
|
4
|
[![dependency status][5]][6]
|
5
|
[![dev dependency status][7]][8]
|
6
|
[![License][license-image]][license-url]
|
7
|
[![Downloads][downloads-image]][downloads-url]
|
8
|
|
9
|
[![npm badge][11]][1]
|
10
|
|
11
|
Determine if the JS environment has Symbol support. Supports spec, or shams.
|
12
|
|
13
|
## Example
|
14
|
|
15
|
```js
|
16
|
var hasSymbols = require('has-symbols');
|
17
|
|
18
|
hasSymbols() === true; // if the environment has native Symbol support. Not polyfillable, not forgeable.
|
19
|
|
20
|
var hasSymbolsKinda = require('has-symbols/shams');
|
21
|
hasSymbolsKinda() === true; // if the environment has a Symbol sham that mostly follows the spec.
|
22
|
```
|
23
|
|
24
|
## Supported Symbol shams
|
25
|
- get-own-property-symbols [npm](https://www.npmjs.com/package/get-own-property-symbols) | [github](https://github.com/WebReflection/get-own-property-symbols)
|
26
|
- core-js [npm](https://www.npmjs.com/package/core-js) | [github](https://github.com/zloirock/core-js)
|
27
|
|
28
|
## Tests
|
29
|
Simply clone the repo, `npm install`, and run `npm test`
|
30
|
|
31
|
[1]: https://npmjs.org/package/has-symbols
|
32
|
[2]: http://versionbadg.es/ljharb/has-symbols.svg
|
33
|
[3]: https://travis-ci.org/ljharb/has-symbols.svg
|
34
|
[4]: https://travis-ci.org/ljharb/has-symbols
|
35
|
[5]: https://david-dm.org/ljharb/has-symbols.svg
|
36
|
[6]: https://david-dm.org/ljharb/has-symbols
|
37
|
[7]: https://david-dm.org/ljharb/has-symbols/dev-status.svg
|
38
|
[8]: https://david-dm.org/ljharb/has-symbols#info=devDependencies
|
39
|
[9]: https://ci.testling.com/ljharb/has-symbols.png
|
40
|
[10]: https://ci.testling.com/ljharb/has-symbols
|
41
|
[11]: https://nodei.co/npm/has-symbols.png?downloads=true&stars=true
|
42
|
[license-image]: http://img.shields.io/npm/l/has-symbols.svg
|
43
|
[license-url]: LICENSE
|
44
|
[downloads-image]: http://img.shields.io/npm/dm/has-symbols.svg
|
45
|
[downloads-url]: http://npm-stat.com/charts.html?package=has-symbols
|