/** * @license Apache-2.0 * * Copyright (c) 2018 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. */ /* eslint-disable no-underscore-dangle */ 'use strict'; // MODULES // var isNodeDuplexStreamLike = require( './../../is-node-duplex-stream-like' ); // MAIN // /** * Tests if a value is Node transform stream-like. * * @param {*} value - value to test * @returns {boolean} boolean indicating if a value is Node transform stream-like * * @example * var transformStream = require( '@stdlib/streams/node/transform' ); * * var stream = transformStream(); * * var bool = isNodeTransformStreamLike( stream ); * // returns true * * bool = isNodeTransformStreamLike( {} ); * // returns false */ function isNodeTransformStreamLike( value ) { return ( // Must be duplex stream-like: isNodeDuplexStreamLike( value ) && // Should have transform stream methods: typeof value._transform === 'function' ); } // EXPORTS // module.exports = isNodeTransformStreamLike;