How to pass selector to onClick in React (Mapbox)

I am working with mapbox in a react application. Accordiong to mapbox docs you can target a layer on map click with code like this. map.on('click', 'poi-label', (e) => {// do lots of stuff in the map })

Currently, I have something like this in my componentDidMount function because it works, when I click on each map marker I can see each instance and relevant info for that marker. I want to move this block into its own onClick but I am wondering how do you pass a layer selector such as poi-label to an onClick and how can I maintain each instance of each marker on click when I break it out from the current click block?

I was thinking something like this but all instances of the markers are triggered on click which is not what I want.

handleClick(layer, e) {
const map = this.state.map
let features = map.queryRenderedFeatures(e.point, {
      layers: ['poi-label']
    });   

        let feature = features[0];
    const popup = new mapboxGl.Marker(this.popupContainer, { offset: [0, -75] })
    .setLngLat(feature.geometry.coordinates)
    .addTo(map);

    this.popupElement = popup._element
    this.popupName = feature.properties.name
    let favoritePOI = this.state.favoritePOI

    this.setState({ showPopup: true, popupInstance: this.popupElement, currentName: this.popupName });

    map.flyTo({ center: e.lngLat});

    this.setPopUp(features, this.addFavorite, this.closeMarker, favoritePOI)

}

Where the onClick is attached in render

render() {
const layer = 'poi-label'
return <div ref={this.mapContainer} className="map-container" onClick={handleClick.bind(this, layer) />

}

Any guidance is appreciated! Thanks!