import type { PluginState } from './types.ts';
/** Provider-scoped state directory. Must call initStateDir() before using state functions. */
export declare let STATE_DIR: string;
/**
 * Initialize the state directory for a specific provider.
 * Must be called once at startup before any state operations.
 * Runs one-time migration from old flat layout if needed.
 */
export declare function initStateDir(provider: string): Promise<void>;
export declare function loadState(): Promise<PluginState>;
export declare function saveState(state: PluginState): Promise<void>;
export declare function getPluginState(state: PluginState, pluginName: string): Record<string, unknown> | null;
export declare function setPluginState(state: PluginState, pluginName: string, pluginState: Record<string, unknown> | undefined): PluginState;
/**
 * Atomic read-modify-write for plugin state.
 * Acquires file lock, loads state, calls transform, saves result, releases lock.
 */
export declare function withState(fn: (state: PluginState) => Promise<PluginState> | PluginState): Promise<PluginState>;
export interface TickerCache {
    [pluginName: string]: {
        text: string;
        gatheredAt: string;
    };
}
export declare function loadTickerCache(): Promise<TickerCache>;
export declare function saveTickerCache(cache: TickerCache): Promise<void>;
export declare function writeTickerPid(pid: number): Promise<void>;
export declare function readTickerPid(): Promise<number | null>;
export declare function clearTickerPid(): Promise<void>;
export declare function loadChannelSeen(): Promise<Record<string, string>>;
export declare function saveChannelSeen(seen: Record<string, string>): Promise<void>;
export declare function clearChannelSeen(): Promise<void>;