Why can't I write like this? How should I revise it?

[2qq2qq]

Why can't I write like this? How should I revise it?

var control = L.Control.fileLayerLoad({
fitBounds: true,
layerOptions: {
onEachFeature: function (feature, layer) {
if (feature.properties.name) { layer.bindTooltip(feature.properties.name, { permanent: true }) };

//if (feature.properties.name) { layer.bindTooltip([latlng], { permanent: true }) };
},

pointToLayer: function (data, latlng) {
return L.circleMarker(latlng, {style: style});

control.loader.on('data:loaded', function (event) {
// event.layer gives you access to the layers you just uploaded!

    // Add to map layer switcher
    layerswitcher.addOverlay(event.layer, event.filename);
});

}}
});

control.addTo(map);