polyfill.js (1523B)
1 /** 2 * @license Apache-2.0 3 * 4 * Copyright (c) 2021 The Stdlib Authors. 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 'use strict'; 20 21 // MODULES // 22 23 var isTypedArray = require( './../../is-typed-array' ); 24 var isDataView = require( './../../is-dataview' ); 25 26 27 // MAIN // 28 29 /** 30 * Polyfill for determining whether an object is an array buffer view. 31 * 32 * ## Notes 33 * 34 * - This polyfill should only be used in environments which do not provide native `ArrayBuffer.isView` support. 35 * - The implementation checks whether a value is a data view or typed array. 36 * 37 * @param {*} value - value to test 38 * @returns {boolean} boolean indicating whether value is an array buffer view 39 * 40 * @example 41 * var Int8Array = require( '@stdlib/array/int8' ); 42 * var bool = isArrayBufferView( new Int8Array( 10 ) ); 43 * // returns true 44 * 45 * @example 46 * var bool = isArrayBufferView( [] ); 47 * // returns false 48 */ 49 function isArrayBufferView( value ) { 50 return isTypedArray( value ) || isDataView( value ); 51 } 52 53 54 // EXPORTS // 55 56 module.exports = isArrayBufferView;