import { ICachedCommand } from './command';
import { ICLIConfig } from './config';
import { IPlugin } from './plugin';
import { ITopic } from './topic';
export interface IEngine {
    readonly config: ICLIConfig;
    readonly plugins: IPlugin[];
    readonly topics: ITopic[];
    readonly commands: ICachedCommand[];
    readonly commandIDs: string[];
    readonly rootTopics: ITopic[];
    readonly rootCommands: ICachedCommand[];
    findCommand(id: string, must: true): ICachedCommand;
    findCommand(id: string, must?: boolean): ICachedCommand | undefined;
    findTopic(id: string, must: true): ITopic;
    findTopic(id: string, must?: boolean): ITopic | undefined;
    runHook<T extends {}>(event: string, opts: T): Promise<void>;
    load(root: string): Promise<void>;
}