arr.indexOf error while getting clicked function in openlayers 5 - vector

Question

In openlayers 5 I have a vector layer and I try to create code to get the properties of a feature after it is clicked.
This is my code so far
var selectClick = new Select({
condition: click,
layers:this.vectorlayer
});
this.olmap.addInteraction(selectClick);
var selectedFeatures = selectClick.getFeatures();
and then I have tried
selectClick.on('select', ()=>{console.log(selectedFeatures);});
and
selectedFeatures.on('add', function(event) {
console.log( selectClick.getFeatures());
});
and I get
ERROR TypeError: arr.indexOf is not a function
in both cases.
What am I doing wrong? My ultimate goal is to do something like
selectClick.getFeatures().feature.properties.id, since the geoJSON I am loading, also has some metadata properties in it.
So, how can I get the selected feature ?
Thanks

Answer 1

Another "whoops" moment. The error had to do with the syntax of the selectClick and how I set the layers var. I set the this.vectorlayer just as a var, but it should be inside an array, hence the array-related, indexOf error.
The code in ol5+angular6 now is
this.vectorsource = new VectorSource({});
this.vectorlayer = new VectorLayer({
source: this.vectorsource
});
this.view = new OlView({
center: OlProj.fromLonLat([6.661594, 50.433237]),
zoom: 2,
});
this.olmap = new OlMap({
target: 'map',
layers: [this.tilelayer,this.vectorlayer],
view: this.view,
projection: 'EPSG:3857'
});
var selectClick = new Select({
condition: click,
layers:[this.vectorlayer]//this should be in an array, you silly codebot
});
this.olmap.addInteraction(selectClick);
selectClick.on(
'select', function(){
console.log(selectClick.getFeatures().item(0).values_);// contains metadata properties of geoJSON
}
);
Thanks