text: /**
   * @fileoverview Lego WeDo 2.0 Communication buffer
   *
   * @license Copyright 2018 The Coding with Chrome 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.
   *
   * @author mbordihn@google.com (Markus Bordihn)
   */
  goog.module('cwc.lib.protocol.lego.weDo2.Buffer');
  
  const ByteArrayBuffer = goog.require('cwc.lib.utils.byte.array.BufferLSB');
  
  
  /**
   * @class
   */
  class Buffer extends ByteArrayBuffer {
    /**
     *
     */
    constructor() {
      super();
    }
  
  
    /**
     * @param {number} channel 1-6
     * @return {THIS}
     * @template THIS
     */
    writeChannel(channel) {
      this.writeByte(channel);
      return this;
    }
  
  
    /**
     * @param {number} length
     * @return {THIS}
     * @template THIS
     */
    writeLength(length) {
      this.writeByte(length);
      return this;
    }
  
  
    /**
     * @return {!ArrayBuffer}
     */
    readSigned() {
      return this.getUint8Array();
    }
  }
  
  
  exports = Buffer;
  