time-to-botec/js/node_modules/@stdlib/assert/is-symbol/README.md

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# isSymbol

> Test if a value is a [symbol][mdn-symbol].

<section class="usage">

## Usage

```javascript
var isSymbol = require( '@stdlib/assert/is-symbol' );
```

#### isSymbol( value )

Tests if a value is a [symbol][mdn-symbol].

```javascript
var Symbol = require( '@stdlib/symbol/ctor' );

var bool = isSymbol( Symbol( 'beep' ) );
// returns true

bool = isSymbol( Object( Symbol( 'beep' ) ) );
// returns true
```

#### isSymbol.isPrimitive( value )

Tests if a `value` is a primitive [symbol][mdn-symbol].

```javascript
var Symbol = require( '@stdlib/symbol/ctor' );

var bool = isSymbol.isPrimitive( Symbol( 'beep' ) );
// returns true

bool = isSymbol.isPrimitive( Object( Symbol( 'boop' ) ) );
// returns false
```

#### isSymbol.isObject( value )

Tests if a `value` is a [`Symbol`][mdn-symbol] object.

```javascript
var Symbol = require( '@stdlib/symbol/ctor' );

var bool = isSymbol.isObject( Symbol( 'beep' ) );
// returns false

bool = isSymbol.isObject( Object( Symbol( 'boop' ) ) );
// returns true
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- eslint-disable no-restricted-syntax, no-empty-function -->

<!-- eslint no-undef: "error" -->

```javascript
var hasSymbolSupport = require( '@stdlib/assert/has-symbol-support' );
var Symbol = require( '@stdlib/symbol/ctor' );
var isSymbol = require( '@stdlib/assert/is-symbol' );

var bool;
if ( hasSymbolSupport() ) {
    bool = isSymbol( Symbol( 'beep' ) );
    // returns true
} else {
    console.log( 'Environment does not support symbols.' );
}
bool = isSymbol( 'beep' );
// returns false

bool = isSymbol( {} );
// returns false

bool = isSymbol( [] );
// returns false

bool = isSymbol( null );
// returns false

bool = isSymbol( void 0 );
// returns false

bool = isSymbol( true );
// returns false

bool = isSymbol( function foo() {} );
// returns false
```

</section>

<!-- /.examples -->

<section class="links">

[mdn-symbol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol

</section>

<!-- /.links -->