import type { AppInMainViewPlugin } from './plugin';
import type { AppInMainViewManager } from './manager';
import { AppId, AppState } from './types';
import { ObserverMap } from './ObserverMap';
export declare const plainObjectKeys: <T>(o: T) => Array<Extract<keyof T, string>>;
export type CollectorProps = {
    control: AppInMainViewManager;
    plugin: AppInMainViewPlugin;
};
export interface ICollector {
    /** 状态存储器 */
    storage: ObserverMap<AppId, AppState>;
    /** 获取课件状态 */
    getAppState(appId: AppId): AppState;
    /** 添加课件状态 */
    addAppState(appId: AppId, appState: AppState): void;
    /** 删除课件状态 */
    deleteAppState(appId: AppId): void;
    /** 更新课件状态 */
    updateAppState(appId: AppId, appState: AppState): void;
    /** 销毁 */
    destroy(): void;
}
/**
 * 服务端事件/状态同步收集器
 */
export declare class Collector implements ICollector {
    private control;
    private plugin;
    private storageObserver;
    private stateDisposer;
    constructor(props: CollectorProps);
    get storage(): ObserverMap<AppId, AppState>;
    getAppState(appId: AppId): AppState;
    addAppState(appId: AppId, appState: AppState): void;
    deleteAppState(appId: AppId): void;
    updateAppState(appId: AppId, appState: AppState): void;
    private getAttributes;
    private diff;
    private observeStorage;
    destroy(): void;
}