@tanstack/query-core/build/legacy/onlineManager.js

The framework agnostic core that powers TanStack Query

import { i as _classPrivateFieldInitSpec, n as _classPrivateFieldGet2, t as _classPrivateFieldSet2 } from "./classPrivateFieldSet2-CukOTU3U.js";
import { Subscribable } from "./subscribable.js";
//#region src/onlineManager.ts
var _online = /* @__PURE__ */ new WeakMap();
var _cleanup = /* @__PURE__ */ new WeakMap();
var _setup = /* @__PURE__ */ new WeakMap();
/**
* The `OnlineManager` manages the online state within TanStack Query. It can
* be used to change the default event listeners or to manually change the
* online state.
*
* By default, the `onlineManager` assumes an active network connection, and
* listens to the `online` and `offline` events on the `window` object to
* detect changes.
*/
var OnlineManager = class extends Subscribable {
	constructor() {
		super();
		_classPrivateFieldInitSpec(this, _online, true);
		_classPrivateFieldInitSpec(this, _cleanup, void 0);
		_classPrivateFieldInitSpec(this, _setup, void 0);
		_classPrivateFieldSet2(_setup, this, (onOnline) => {
			if (typeof window !== "undefined" && window.addEventListener) {
				const onlineListener = () => onOnline(true);
				const offlineListener = () => onOnline(false);
				window.addEventListener("online", onlineListener, false);
				window.addEventListener("offline", offlineListener, false);
				return () => {
					window.removeEventListener("online", onlineListener);
					window.removeEventListener("offline", offlineListener);
				};
			}
		});
	}
	onSubscribe() {
		if (!_classPrivateFieldGet2(_cleanup, this)) this.setEventListener(_classPrivateFieldGet2(_setup, this));
	}
	onUnsubscribe() {
		if (!this.hasListeners()) {
			var _classPrivateFieldGet2$1;
			(_classPrivateFieldGet2$1 = _classPrivateFieldGet2(_cleanup, this)) === null || _classPrivateFieldGet2$1 === void 0 || _classPrivateFieldGet2$1.call(this);
			_classPrivateFieldSet2(_cleanup, this, void 0);
		}
	}
	/**
	* `setEventListener` can be used to set a custom event listener that will
	* be used to determine the online state. The provided `setup` function
	* receives a `setOnline` callback that should be called with a `boolean`
	* whenever the online state changes.
	* @param setup - Receives the `setOnline` callback, registers the event listener, and may return
	* a cleanup function that is called when the listener is replaced or no longer needed.
	* @example
	* ```ts
	* import NetInfo from '@react-native-community/netinfo'
	* import { onlineManager } from '@tanstack/query-core'
	*
	* onlineManager.setEventListener((setOnline) => {
	*   return NetInfo.addEventListener((state) => {
	*     setOnline(!!state.isConnected)
	*   })
	* })
	* ```
	*/
	setEventListener(setup) {
		var _classPrivateFieldGet3;
		_classPrivateFieldSet2(_setup, this, setup);
		(_classPrivateFieldGet3 = _classPrivateFieldGet2(_cleanup, this)) === null || _classPrivateFieldGet3 === void 0 || _classPrivateFieldGet3.call(this);
		_classPrivateFieldSet2(_cleanup, this, setup(this.setOnline.bind(this)));
	}
	/**
	* `setOnline` can be used to manually set the online state.
	* @param online - The online state.
	* @example
	* ```ts
	* import { onlineManager } from '@tanstack/query-core'
	*
	* // Set to online
	* onlineManager.setOnline(true)
	*
	* // Set to offline
	* onlineManager.setOnline(false)
	* ```
	*/
	setOnline(online) {
		if (_classPrivateFieldGet2(_online, this) !== online) {
			_classPrivateFieldSet2(_online, this, online);
			this.listeners.forEach((listener) => {
				listener(online);
			});
		}
	}
	/**
	* `isOnline` can be used to get the current online state.
	* @returns `true` if online.
	*/
	isOnline() {
		return _classPrivateFieldGet2(_online, this);
	}
};
/**
* Singleton instance of {@link OnlineManager}, used to manage and observe the online state within TanStack Query.
*/
const onlineManager = new OnlineManager();
//#endregion
export { OnlineManager, onlineManager };

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