devnull.js

/* Copyright (c) 2016, 2023, Oracle and/or its affiliates. */

/******************************************************************************
 *
 * This software is dual-licensed to you under the Universal Permissive License
 * (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
 * 2.0 as shown at https://www.apache.org/licenses/LICENSE-2.0. You may choose
 * either license.
 *
 * If you elect to accept the software under the Apache License, Version 2.0,
 * the following applies:
 *
 * 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
 *
 *    https://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.
 *
 * NAME
 *   devnull.js
 *
 * DESCRIPTION
 *   /dev/null for Node streams
 *
 *****************************************************************************/
'use strict';

const stream = require('stream');
const util   = require('util');

module.exports = DevNull;

// step 2 - to call the Writable constructor in our own constructor
function DevNull(opts) {
  if (!(this instanceof DevNull)) return new DevNull(opts);

  opts = opts || {};
  stream.Writable.call(this, opts);

}

// step 1 - to extend the Writable Class
util.inherits(DevNull, stream.Writable);

// step 3 -define a '_write()' method in the prototype of our stream object
DevNull.prototype._write = function(chunk, encoding, cb) {
  setImmediate(cb);
};