fix typescript errors

src/app/graph/graph.component.ts

@@ -38,7 +38,7 @@ export class GraphComponent implements OnChanges, OnInit {
 
   private selectNode = () => {
     const point = d3.mouse(this.graphContainer.nativeElement);
-    const node: Node = this.simulation.find(...point, 20);
+    const node = this.simulation.find(point[0], point[1], 20) as Node;
 
     if (node) this.select.emit(node.id);
   }

src/app/node.reducer.ts

@@ -65,7 +65,7 @@ export function reducer(
 
     case NodeActionTypes.ToggleNodeSelection: {
       // add or remove a node with given id to selected node ids
-      if (state.ids.includes(action.payload.id)) {
+      if ((state.ids as string[]).includes(action.payload.id)) {
         if (state.selectedIds.includes(action.payload.id)) {
           // add
           return {