class Store {
  /**
   * The current state of the store.
   * This property is updated immediately when the state changes as a result of calling {@link setState}, {@link update}, or {@link set}.
   * To subscribe to state changes, use the {@link useState} method. The value returned by {@link useState} is updated after the component renders (similarly to React's useState).
   * The values can be used directly (to avoid subscribing to the store) in effects or event handlers.
   *
   * Do not modify properties in state directly. Instead, use the provided methods to ensure proper state management and listener notification.
   */
  // Internal state to handle recursive `setState()` calls
  constructor(state) {
    this.state = state;
    this.listeners = /* @__PURE__ */ new Set();
    this.updateTick = 0;
  }
  /**
   * Registers a listener that will be called whenever the store's state changes.
   *
   * @param fn The listener function to be called on state changes.
   * @returns A function to unsubscribe the listener.
   */
  subscribe = (fn) => {
    this.listeners.add(fn);
    return () => {
      this.listeners.delete(fn);
    };
  };
  /**
   * Returns the current state of the store.
   */
  getSnapshot = () => {
    return this.state;
  };
  /**
   * Updates the entire store's state and notifies all registered listeners.
   *
   * @param newState The new state to set for the store.
   */
  setState(newState) {
    if (this.state === newState) {
      return;
    }
    this.state = newState;
    this.updateTick += 1;
    const currentTick = this.updateTick;
    for (const listener of this.listeners) {
      if (currentTick !== this.updateTick) {
        return;
      }
      listener(newState);
    }
  }
  /**
   * Merges the provided changes into the current state and notifies listeners if there are changes.
   *
   * @param changes An object containing the changes to apply to the current state.
   */
  update(changes) {
    for (const key in changes) {
      if (!Object.is(this.state[key], changes[key])) {
        Store.prototype.setState.call(this, {
          ...this.state,
          ...changes
        });
        return;
      }
    }
  }
  /**
   * Sets a specific key in the store's state to a new value and notifies listeners if the value has changed.
   *
   * @param key The key in the store's state to update.
   * @param value The new value to set for the specified key.
   */
  set(key, value) {
    if (!Object.is(this.state[key], value)) {
      Store.prototype.setState.call(this, {
        ...this.state,
        [key]: value
      });
    }
  }
  /**
   * Gives the state a new reference and updates all registered listeners.
   */
  notifyAll() {
    const newState = {
      ...this.state
    };
    Store.prototype.setState.call(this, newState);
  }
}
export {
  Store
};
//# sourceMappingURL=Store.js.map
