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

The framework agnostic core that powers TanStack Query

// src/notifyManager.ts
import { scheduleMicrotask } from "./utils.js";
function createNotifyManager() {
  let queue = [];
  let transactions = 0;
  let notifyFn = (callback) => {
    callback();
  };
  let batchNotifyFn = (callback) => {
    callback();
  };
  const batch = (callback) => {
    let result;
    transactions++;
    try {
      result = callback();
    } finally {
      transactions--;
      if (!transactions) {
        flush();
      }
    }
    return result;
  };
  const schedule = (callback) => {
    if (transactions) {
      queue.push(callback);
    } else {
      scheduleMicrotask(() => {
        notifyFn(callback);
      });
    }
  };
  const batchCalls = (callback) => {
    return (...args) => {
      schedule(() => {
        callback(...args);
      });
    };
  };
  const flush = () => {
    const originalQueue = queue;
    queue = [];
    if (originalQueue.length) {
      scheduleMicrotask(() => {
        batchNotifyFn(() => {
          originalQueue.forEach((callback) => {
            notifyFn(callback);
          });
        });
      });
    }
  };
  const setNotifyFunction = (fn) => {
    notifyFn = fn;
  };
  const setBatchNotifyFunction = (fn) => {
    batchNotifyFn = fn;
  };
  return {
    batch,
    batchCalls,
    schedule,
    setNotifyFunction,
    setBatchNotifyFunction
  };
}
var notifyManager = createNotifyManager();
export {
  createNotifyManager,
  notifyManager
};
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