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

Core utilities for building navigators

import * as React from 'react';
import NavigationContainerRefContext from './NavigationContainerRefContext';
import NavigationContext from './NavigationContext';
/**
 * Hook to access the navigation prop of the parent screen anywhere.
 *
 * @returns Navigation prop of the parent screen.
 */
export default function useNavigation() {
  const root = React.useContext(NavigationContainerRefContext);
  const navigation = React.useContext(NavigationContext);
  if (navigation === undefined && root === undefined) {
    throw new Error("Couldn't find a navigation object. Is your component inside NavigationContainer?");
  }

  // FIXME: Figure out a better way to do this
  return navigation ?? root;
}
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