old_contents: const JSONRPC = require('./jsonrpc');
  // const log = require('../util/log');
  
  class JSONRPCWebSocket extends JSONRPC {
      constructor (webSocket) {
          super();
  
          this._ws = webSocket;
          this._ws.onmessage = e => this._onSocketMessage(e);
          this._ws.onopen = e => this._onSocketOpen(e);
          this._ws.onclose = e => this._onSocketClose(e);
          this._ws.onerror = e => this._onSocketError(e);
      }
  
      dispose () {
          this._ws.close();
          this._ws = null;
      }
  
      _onSocketOpen () {
      }
  
      _onSocketClose () {
      }
  
      _onSocketError () {
      }
  
      _onSocketMessage (e) {
          const json = JSON.parse(e.data);
          if (json.method !== 'characteristicDidChange') {
              // log.info(`received message: ${json}`);
          }
          this._handleMessage(json);
      }
  
      _sendMessage (message) {
          const messageText = JSON.stringify(message);
          this._ws.send(messageText);
      }
  }
  
  module.exports = JSONRPCWebSocket;
  
new_contents: const JSONRPC = require('./jsonrpc');
  // const log = require('../util/log');
  
  class JSONRPCWebSocket extends JSONRPC {
      constructor (webSocket) {
          super();
  
          this._ws = webSocket;
          this._ws.onmessage = e => this._onSocketMessage(e);
          this._ws.onopen = e => this._onSocketOpen(e);
          this._ws.onclose = e => this._onSocketClose(e);
          this._ws.onerror = e => this._onSocketError(e);
      }
  
      dispose () {
          this._ws.close();
          this._ws = null;
      }
  
      _onSocketOpen () {
      }
  
      _onSocketClose () {
      }
  
      _onSocketError () {
      }
  
      _onSocketMessage (e) {
          const json = JSON.parse(e.data);
          this._handleMessage(json);
      }
  
      _sendMessage (message) {
          const messageText = JSON.stringify(message);
          this._ws.send(messageText);
      }
  }
  
  module.exports = JSONRPCWebSocket;
  
subject: remove logging