Function ToastContainer

packages/react-aria/stories/toast/Example.tsx:21–32

({
  children,
  ...otherProps
}: ToastStateProps & {children: (state: ToastState<string>) => React.ReactNode})

const ToastContext = createContext<ToastState<string> | null>(null);

export function ToastContainer({
  children,
  ...otherProps
}: ToastStateProps & {children: (state: ToastState<string>) => React.ReactNode}): JSX.Element {
  let state = useToastState<string>(otherProps);
  return (
    <ToastContext.Provider value={state}>
      {children(state)}
      <ToastRegion />
    </ToastContext.Provider>
  );
}

function ToastRegion() {
  let state = useContext(ToastContext)!;