rectangle-cdm.js

componentDidMount = () => {
    const rectangle = new google.maps.Rectangle({
      ...this.props.options,
      map: this.context
    })

    this.setState({ rectangle }, () => {
      this.registeredEvents = applyUpdatesAndRegisterEvents({
        updaterMap,
        eventMap,
        prevProps: {},
        nextProps: this.props,
        instance: this.state.rectangle
      })
    })
  }