var dtype = require( '@stdlib/ndarray/base/buffer-dtype' );

var Float64Array = require( '@stdlib/array/float64' );
var buf = new Float64Array( 10 );

var dt = dtype( buf );
// returns 'float64'

var dt = dtype( 'beep' );
// returns null

var dtypes = require( '@stdlib/ndarray/dtypes' );
var bufferCtors = require( '@stdlib/ndarray/base/buffer-ctors' );
var dtype = require( '@stdlib/ndarray/base/buffer-dtype' );

// Get a list of supported ndarray buffer data types:
var DTYPES = dtypes( 'integer_and_generic' );

// Buffer length:
var len = 10;

// For each supported data type, create a buffer and confirm its data type...
var ctor;
var dt;
var i;
for ( i = 0; i < DTYPES.length; i++ ) {
    ctor = bufferCtors( DTYPES[ i ] );
    dt = dtype( new ctor( len ) );
    console.log( '%s == %s => %s', DTYPES[ i ], dt, DTYPES[ i ] === dt );
}

// Try an array-like object...
var buf = {
    'length': len
};
dt = dtype( buf );
console.log( '%s == %s => %s', 'generic', dt, dt === 'generic' );