I am using angular-tree-component v7.2.0 with angular 5.
HTML
<tree-root #treeRoot [nodes]="nodesOfSites" [options]="options"></tree-root>
TS
nodesOfSites = [];
options: any = { useCheckbox: true, getChildren: (node: TreeNode) => this.getChildren(node) };
When I select the parent node, it does not select all child nodes. All the child nodes with hasChildren: false get selected but child nodes with hasChildren: true does not get selected.