_transform.js (1235B)
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 logger = require( 'debug' ); 24 25 26 // VARIABLES // 27 28 var debug = logger( 'transform-stream:transform' ); 29 30 31 // MAIN // 32 33 /** 34 * Implements the `_transform` method as a pass through. 35 * 36 * @private 37 * @param {(Uint8Array|Buffer|string)} chunk - streamed chunk 38 * @param {string} encoding - Buffer encoding 39 * @param {Callback} clbk - callback to invoke after transforming the streamed chunk 40 */ 41 function transform( chunk, encoding, clbk ) { 42 debug( 'Received a new chunk. Chunk: %s. Encoding: %s.', chunk.toString(), encoding ); 43 clbk( null, chunk ); 44 } 45 46 47 // EXPORTS // 48 49 module.exports = transform;