Passing list item index via router

There can be situation when list item is on page and its details on another. So question is how to deal with stateIndex. For this case you can pass list item index along with url params and on target component catch it and assign to stateIndex

export class TodoDescription extends React.Component<any, any> implements HasStateActions<TodoStateActions> {
    actions: TodoStateActions;
    statePath: any;
    get stateIndex() {
        return '0' // param comming from router or any other source
    };
}