@react-navigation/native/lib/module/useLinking.native.js

import { getActionFromState as getActionFromStateDefault, getStateFromPath as getStateFromPathDefault } from '@react-navigation/core';
import * as React from 'react';
import { Linking, Platform } from 'react-native';
import extractPathFromURL from './extractPathFromURL';
let isUsingLinking = false;
export default function useLinking(ref, {
  independent,
  enabled = true,
  prefixes,
  filter,
  config,
  getInitialURL = () => Promise.race([Linking.getInitialURL(), new Promise(resolve => // Timeout in 150ms if `getInitialState` doesn't resolve
  // Workaround for https://github.com/facebook/react-native/issues/25675
  setTimeout(resolve, 150))]),
  subscribe = listener => {
    const callback = ({
      url
    }) => listener(url);

    const subscription = Linking.addEventListener('url', callback);
    return () => {
      // https://github.com/facebook/react-native/commit/6d1aca806cee86ad76de771ed3a1cc62982ebcd7
      if (subscription !== null && subscription !== void 0 && subscription.remove) {
        subscription.remove();
      } else {
        Linking.removeEventListener('url', callback);
      }
    };
  },
  getStateFromPath = getStateFromPathDefault,
  getActionFromState = getActionFromStateDefault
}) {
  React.useEffect(() => {
    if (independent) {
      return undefined;
    }

    if (enabled !== false && isUsingLinking) {
      throw new Error(['Looks like you have configured linking in multiple places. This is likely an error since deep links should only be handled in one place to avoid conflicts. Make sure that:', "- You are not using both 'linking' prop and 'useLinking'", "- You don't have 'useLinking' in multiple components", Platform.OS === 'android' ? "- You have set 'android:launchMode=singleTask' in the '<activity />' section of the 'AndroidManifest.xml' file to avoid launching multiple instances" : ''].join('\n').trim());
    } else {
      isUsingLinking = enabled !== false;
    }

    return () => {
      isUsingLinking = false;
    };
  }); // We store these options in ref to avoid re-creating getInitialState and re-subscribing listeners
  // This lets user avoid wrapping the items in `React.useCallback` or `React.useMemo`
  // Not re-creating `getInitialState` is important coz it makes it easier for the user to use in an effect

  const enabledRef = React.useRef(enabled);
  const prefixesRef = React.useRef(prefixes);
  const filterRef = React.useRef(filter);
  const configRef = React.useRef(config);
  const getInitialURLRef = React.useRef(getInitialURL);
  const getStateFromPathRef = React.useRef(getStateFromPath);
  const getActionFromStateRef = React.useRef(getActionFromState);
  React.useEffect(() => {
    enabledRef.current = enabled;
    prefixesRef.current = prefixes;
    filterRef.current = filter;
    configRef.current = config;
    getInitialURLRef.current = getInitialURL;
    getStateFromPathRef.current = getStateFromPath;
    getActionFromStateRef.current = getActionFromState;
  });
  const getStateFromURL = React.useCallback(url => {
    if (!url || filterRef.current && !filterRef.current(url)) {
      return undefined;
    }

    const path = extractPathFromURL(prefixesRef.current, url);
    return path ? getStateFromPathRef.current(path, configRef.current) : undefined;
  }, []);
  const getInitialState = React.useCallback(() => {
    let state;

    if (enabledRef.current) {
      const url = getInitialURLRef.current();

      if (url != null && typeof url !== 'string') {
        return url.then(url => {
          const state = getStateFromURL(url);
          return state;
        });
      }

      state = getStateFromURL(url);
    }

    const thenable = {
      then(onfulfilled) {
        return Promise.resolve(onfulfilled ? onfulfilled(state) : state);
      },

      catch() {
        return thenable;
      }

    };
    return thenable;
  }, [getStateFromURL]);
  React.useEffect(() => {
    const listener = url => {
      if (!enabled) {
        return;
      }

      const navigation = ref.current;
      const state = navigation ? getStateFromURL(url) : undefined;

      if (navigation && state) {
        // Make sure that the routes in the state exist in the root navigator
        // Otherwise there's an error in the linking configuration
        const rootState = navigation.getRootState();

        if (state.routes.some(r => !(rootState !== null && rootState !== void 0 && rootState.routeNames.includes(r.name)))) {
          console.warn("The navigation state parsed from the URL contains routes not present in the root navigator. This usually means that the linking configuration doesn't match the navigation structure. See https://reactnavigation.org/docs/configuring-links for more details on how to specify a linking configuration.");
          return;
        }

        const action = getActionFromStateRef.current(state, configRef.current);

        if (action !== undefined) {
          try {
            navigation.dispatch(action);
          } catch (e) {
            // Ignore any errors from deep linking.
            // This could happen in case of malformed links, navigation object not being initialized etc.
            console.warn(`An error occurred when trying to handle the link '${url}': ${e.message}`);
          }
        } else {
          navigation.resetRoot(state);
        }
      }
    };

    return subscribe(listener);
  }, [enabled, getStateFromURL, ref, subscribe]);
  return {
    getInitialState
  };
}
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