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

The framework agnostic core that powers TanStack Query

import { systemSetTimeoutZero } from "./timeoutManager.js";
//#region src/notifyManager.ts
const defaultScheduler = systemSetTimeoutZero;
function createNotifyManager() {
	let queue = [];
	let transactions = 0;
	let notifyFn = (callback) => {
		callback();
	};
	let batchNotifyFn = (callback) => {
		callback();
	};
	let scheduleFn = defaultScheduler;
	const schedule = (callback) => {
		if (transactions) queue.push(callback);
		else scheduleFn(() => {
			notifyFn(callback);
		});
	};
	const flush = () => {
		const originalQueue = queue;
		queue = [];
		if (originalQueue.length) scheduleFn(() => {
			batchNotifyFn(() => {
				originalQueue.forEach((callback) => {
					notifyFn(callback);
				});
			});
		});
	};
	return {
		batch: (callback) => {
			let result;
			transactions++;
			try {
				result = callback();
			} finally {
				transactions--;
				if (!transactions) flush();
			}
			return result;
		},
		/**
		* All calls to the wrapped function will be batched.
		*/
		batchCalls: (callback) => {
			return (...args) => {
				schedule(() => {
					callback(...args);
				});
			};
		},
		schedule,
		/**
		* Use this method to set a custom notify function.
		* This can be used to for example wrap notifications with `React.act` while running tests.
		*/
		setNotifyFunction: (fn) => {
			notifyFn = fn;
		},
		/**
		* Use this method to set a custom function to batch notifications together into a single tick.
		* By default React Query will use the batch function provided by ReactDOM or React Native.
		*/
		setBatchNotifyFunction: (fn) => {
			batchNotifyFn = fn;
		},
		setScheduler: (fn) => {
			scheduleFn = fn;
		}
	};
}
const notifyManager = createNotifyManager();
//#endregion
export { createNotifyManager, defaultScheduler, notifyManager };

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