main.js (1473B)
1 /** 2 * @license Apache-2.0 3 * 4 * Copyright (c) 2018 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 isNodeWritableStreamLike = require( './../../is-node-writable-stream-like' ); 24 var isNodeReadableStreamLike = require( './../../is-node-readable-stream-like' ); 25 26 27 // MAIN // 28 29 /** 30 * Tests if a value is Node duplex stream-like. 31 * 32 * @param {*} value - value to test 33 * @returns {boolean} boolean indicating if a value is Node duplex stream-like 34 * 35 * @example 36 * var transformStream = require( '@stdlib/streams/node/transform' ); 37 * 38 * var stream = transformStream(); 39 * 40 * var bool = isNodeDuplexStreamLike( stream ); 41 * // returns true 42 * 43 * bool = isNodeDuplexStreamLike( {} ); 44 * // returns false 45 */ 46 function isNodeDuplexStreamLike( value ) { 47 return ( 48 // Must be both readable and writable: 49 isNodeWritableStreamLike( value ) && 50 isNodeReadableStreamLike( value ) 51 ); 52 } 53 54 55 // EXPORTS // 56 57 module.exports = isNodeDuplexStreamLike;