_handleEscKey.js

   componentWillMount() {
     global.addEventListener("keyPress", this._handleEscKey, false);
   };

   componentWillUnmount() {
      global.removeEventListener("keyPress", this._handleEscKey, false);
   };

  _handleEscKey = (event) => {
    if(event.keyCode == 27){
      this.setState({
        isToggleOn: false,
      });
    }
  };