/**
 * Crann v2 Agent
 *
 * Client-side connection to a Crann store.
 * Runs in content scripts, popup, sidepanel, etc.
 */
import type { ConfigSchema, ValidatedConfig, DerivedState, DerivedActions, StateChanges } from "../store/types";
import type { AgentOptions, AgentAPI, AgentConnectionInfo } from "./types";
export declare class Agent<TConfig extends ConfigSchema> implements AgentAPI<TConfig> {
    private readonly config;
    private readonly options;
    private readonly porter;
    private _state;
    private _agentInfo;
    private _isConnected;
    private _isDisconnected;
    private readonly subscribers;
    private readonly readyCallbacks;
    private readonly disconnectCallbacks;
    private readonly reconnectCallbacks;
    private readyPromise;
    private readyResolve;
    private readonly actionsProxy;
    constructor(config: ValidatedConfig<TConfig>, options?: AgentOptions);
    ready(): Promise<DerivedState<TConfig>>;
    onReady(callback: (state: DerivedState<TConfig>) => void): () => void;
    getState(): DerivedState<TConfig>;
    get state(): DerivedState<TConfig>;
    setState(state: Partial<DerivedState<TConfig>>): Promise<void>;
    subscribe(callbackOrKeys: ((changes: StateChanges<TConfig>, state: DerivedState<TConfig>) => void) | Array<keyof DerivedState<TConfig>>, maybeCallback?: (changes: StateChanges<TConfig>, state: DerivedState<TConfig>) => void): () => void;
    get actions(): DerivedActions<TConfig>;
    getInfo(): AgentConnectionInfo | null;
    onDisconnect(callback: () => void): () => void;
    onReconnect(callback: (state: DerivedState<TConfig>) => void): () => void;
    disconnect(): void;
    private setupMessageHandlers;
    private notifySubscribers;
    private createActionsProxy;
    private buildDefaultState;
    private assertNotDisconnected;
}
/**
 * Connect to a Crann store from a client context.
 *
 * This should be called in content scripts, popup, sidepanel, or other
 * extension contexts that need to access the store. Uses the config's
 * `name` to find and connect to the matching store in the service worker.
 *
 * @param config - Validated config from createConfig() (must match store's config)
 * @param options - Optional connection options
 * @param options.debug - Enable debug logging
 * @returns An Agent instance for interacting with the store
 *
 * @example
 * // content.ts
 * import { createConfig, connectStore } from 'crann';
 *
 * const config = createConfig({
 *   name: 'myFeature',
 *   count: { default: 0, persist: 'local' },
 * });
 *
 * const agent = connectStore(config);
 *
 * // Wait for connection and initial state
 * const state = await agent.ready();
 * console.log('Initial count:', state.count);
 *
 * // Subscribe to changes
 * agent.subscribe((changes, state) => {
 *   console.log('State changed:', changes);
 * });
 *
 * // Call actions
 * await agent.actions.increment();
 */
export declare function connectStore<TConfig extends ConfigSchema>(config: ValidatedConfig<TConfig>, options?: AgentOptions): AgentAPI<TConfig>;