@inthepocket/react-native-service-discovery/lib/module/index.js

mDNS Network Service Discovery in React Native

import { NativeEventEmitter, NativeModules, Platform } from 'react-native';
const LINKING_ERROR = `The package '@inthepocket/react-native-service-discovery' doesn't seem to be linked. Make sure: \n\n` + Platform.select({
  ios: "- You have run 'pod install'\n",
  default: ''
}) + '- You rebuilt the app after installing the package\n' + '- You are not using Expo Go\n';

// @ts-expect-error
const isTurboModuleEnabled = global.__turboModuleProxy != null;
const ServiceDiscoveryModule = isTurboModuleEnabled ? require('./NativeServiceDiscovery').default : NativeModules.ServiceDiscovery;
const ServiceDiscovery = ServiceDiscoveryModule ? ServiceDiscoveryModule : new Proxy({}, {
  get() {
    throw new Error(LINKING_ERROR);
  }
});

/**
 * A service that is found or lost on the network.
 */

const EventEmitter = new NativeEventEmitter(ServiceDiscovery);

/**
 *
 * @example
 * ```ts
 * import * as ServiceDiscovery from '@inthepocket/react-native-service-discovery';
 *
 * ServiceDiscovery.addEventListener('serviceFound', (service) => console.log('Service found:', service));
 *
 * // Start searching for _http._tcp. services
 * await ServiceDiscovery.startSearch('http');
 * ```
 */
export const addEventListener = (event, listener) => EventEmitter.addListener(event, listener);

/**
 * Start searching for services of a specific type. Searching for
 * multiple services can be done in parallel.
 *
 * @param serviceType The service type to search for, e.g. 'http'. The device
 * will search for services of type `_serviceType._tcp.`.
 *
 * @example
 * ```ts
 * import * as ServiceDiscovery from '@inthepocket/react-native-service-discovery';
 *
 * ServiceDiscovery.addEventListener('serviceFound', (service) => console.log('Service found:', service));
 *
 * // Start searching for _http._tcp. services
 * await ServiceDiscovery.startSearch('http');
 * ```
 */
export const startSearch = serviceType => ServiceDiscovery.startSearch(serviceType);

/**
 * Stop searching for a specific service. This will not stop searching for any
 * other services that are being searched for.
 *
 * @returns A promise that resolves when the search has been stopped, and
 * rejects if the search cannot be stopped. Does not reject if the search has
 * already been stopped.
 */
export const stopSearch = serviceType => ServiceDiscovery.stopSearch(serviceType);
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