# isIndexMode
> Test if an input value is a supported ndarray index mode.
## Usage
```javascript
var isIndexMode = require( '@stdlib/ndarray/base/assert/is-index-mode' );
```
#### isIndexMode( value )
Tests if an input `value` is a supported ndarray index mode.
```javascript
var bool = isIndexMode( 'throw' );
// returns true
bool = isIndexMode( 'clamp' );
// returns true
bool = isIndexMode( 'wrap' );
// returns true
```
## Examples
```javascript
var isIndexMode = require( '@stdlib/ndarray/base/assert/is-index-mode' );
var bool = isIndexMode( 'throw' );
// returns true
bool = isIndexMode( 'wrap' );
// returns true
bool = isIndexMode( 'clamp' );
// returns true
bool = isIndexMode( '' );
// returns false
bool = isIndexMode( 'foo' );
// returns false
```