React async router - how send props

How to send props to the resolved component, using async router in React?

async: function(routeTo, routeFrom, resolve, reject) {

    component: WorkSchedulePage,
    options: {
      props: {
         {a: 1}

The above doesn’t work. When component is getting initialized, it doesn’t have any props.

Not sure why document says so yet it doesn’t work. But this way seems to work:

resolve({ component: WorkSchedulePage}, { props: { {a: 1} } })