/**
 * This file is copied from the react-navigation repo:
 * https://github.com/react-navigation/react-navigation/blob/%40react-navigation/core%407.1.2/packages/core/src/findFocusedRoute.tsx
 *
 * Please refrain from making changes to this file, as it will make merging updates from the upstream harder.
 * All modifications except formatting should be marked with `// @modified` comment.
 *
 * No modifications currently, copied so we can access without importing any React Native code in Node.js environments.
 */

import type { InitialState } from '@react-navigation/routers'

export function findFocusedRoute(state: InitialState) {
  let current: InitialState | undefined = state

  while (current?.routes[current.index ?? 0].state != null) {
    current = current.routes[current.index ?? 0].state
  }

  const route = current?.routes[current?.index ?? 0]

  return route
}