src/esc-pos-encoder.js
/**
     * Beep
     *
     * @return {object}                  Return the object, for easy chaining commands
     *
     */
Beep
@return {object}                  Return the object, for easy chaining commands
Beep @return { object } Return the object for easy chaining commands
beep() {
      this._queue([
        0x1b, 0x42, 0x3, 0x2  
      ]);
      return this;
  }
beep ( ) { this . _queue ( [ 0x1b , 0x42 , 0x3 , 0x2 ] ) ; return this ; }
Beep
 @return {object}                  Return the object, for easy chaining commands
Beep @return { object } Return the object for easy chaining commands