export type Route = {
  key: string;
  routeName: string;
};

export type NavigationEventName =
  | "willFocus"
  | "didFocus"
  | "willBlur"
  | "didBlur";

export type NavigationState = {
  key: string;
  index: number;
  routes: Route[];
  routeName: string;
  transitions: {
    pushing: string[];
    popping: string[];
  };
  params?: { [key: string]: unknown };
};

export type NavigationProp<RouteName = string, Params = object> = {
  navigate(routeName: RouteName): void;
  goBack(): void;
  goBack(key: string | null): void;
  addListener: (
    event: NavigationEventName,
    callback: () => void
  ) => { remove: () => void };
  isFocused(): boolean;
  state: NavigationState;
  setParams(params: Params): void;
  getParam(): Params;
  dispatch(action: { type: string }): void;
  isFirstRouteInParent(): boolean;
  dangerouslyGetParent(): NavigationProp | undefined;
};