blob: e4152293ac53cc86bb6785ad409b157bd4fbdb5d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
# well-known-symbols
Check whether a symbol is [well-known](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Symbol#Well-known_symbols).
Requires Node.js 4 or above. Note that not all Node.js versions support the same
well-known symbols.
## Installation
```console
$ npm install --save well-known-symbols
```
## Usage
```js
const wellKnownSymbols = require('well-known-symbols')
wellKnownSymbols.isWellKnown(Symbol.iterator) // true
wellKnownSymbols.isWellKnown(Symbol()) // false
wellKnownSymbols.getLabel(Symbol.iterator) // 'Symbol.iterator'
wellKnownSymbols.getLabel(Symbol()) // undefined
```
|
