@assistant-ui/react/dist/api/subscribable/BaseSubject.js

Typescript/React library for AI Chat

class BaseSubject {
  _subscriptions = /* @__PURE__ */ new Set();
  _connection;
  get isConnected() {
    return !!this._connection;
  }
  notifySubscribers() {
    for (const callback of this._subscriptions) callback();
  }
  _updateConnection() {
    if (this._subscriptions.size > 0) {
      if (this._connection) return;
      this._connection = this._connect();
    } else {
      this._connection?.();
      this._connection = void 0;
    }
  }
  subscribe(callback) {
    this._subscriptions.add(callback);
    this._updateConnection();
    return () => {
      this._subscriptions.delete(callback);
      this._updateConnection();
    };
  }
}
export {
  BaseSubject
};
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