# BigUint64Array Support > Detect native [`BigUint64Array`][mdn-biguint64array] support.
## Usage ```javascript var hasBigUint64ArraySupport = require( '@stdlib/assert/has-biguint64array-support' ); ``` #### hasBigUint64ArraySupport() Detects if a runtime environment supports [`BigUint64Array`][mdn-biguint64array]. ```javascript var bool = hasBigUint64ArraySupport(); // returns ```
## Examples ```javascript var hasBigUint64ArraySupport = require( '@stdlib/assert/has-biguint64array-support' ); var bool = hasBigUint64ArraySupport(); if ( bool ) { console.log( 'Environment has BigUint64Array support.' ); } else { console.log( 'Environment lacks BigUint64Array support.' ); } ```
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## CLI
### Usage ```text Usage: has-biguint64array-support [options] Options: -h, --help Print this message. -V, --version Print the package version. ```
### Examples ```bash $ has-biguint64array-support ```