@react-navigation/core/lib/module/getFocusedRouteNameFromRoute.js

Core utilities for building navigators

"use strict";

import { CHILD_STATE } from "./useRouteCache.js";
export function getFocusedRouteNameFromRoute(route) {
  // @ts-expect-error: this isn't in type definitions coz we want this private
  const state = route[CHILD_STATE] ?? route.state;
  const params = route.params;
  const routeName = state ?
  // Get the currently active route name in the nested navigator
  state.routes[
  // If we have a partial state without index, for tab/drawer, first screen will be focused one, and last for stack
  // The type property will only exist for rehydrated state and not for state from deep link
  state.index ?? (typeof state.type === 'string' && state.type !== 'stack' ? 0 : state.routes.length - 1)].name :
  // If state doesn't exist, we need to default to `screen` param if available
  typeof params?.screen === 'string' ? params.screen : undefined;
  return routeName;
}
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