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* @license Apache-2.0
*
* Copyright (c) 2021 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var nativeClass = require( '@stdlib/utils/native-class' );
// VARIABLES //
var hasDataView = ( typeof DataView === 'function' ); // eslint-disable-line stdlib/require-globals
// MAIN //
/**
* Tests if a value is a `DataView`.
*
* @param {*} value - value to test
* @returns {boolean} boolean indicating whether value is a DataView
*
* @example
* var ArrayBuffer = require( '@stdlib/array/buffer' );
* var DataView = require( '@stdlib/array/dataview' );
*
* var bool = isDataView( new DataView( new ArrayBuffer( 10 ) ) );
* // returns true
*
* @example
* var bool = isDataView( [] );
* // returns false
*/
function isDataView( value ) {
return (
( hasDataView && value instanceof DataView ) || // eslint-disable-line stdlib/require-globals
nativeClass( value ) === '[object DataView]'
);
}
// EXPORTS //
module.exports = isDataView;
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