import { EggProtoImplClass, LifecycleHook } from '@eggjs/tegg';
import { EggPrototypeFactory, LoadUnit, LoadUnitLifecycleContext } from '@eggjs/tegg-metadata';
import { CompiledStateGraphProto } from './CompiledStateGraphProto';
import { IGraphMetadata, IGraphToolMetadata } from '@eggjs/tegg-langchain-decorator';
export declare class GraphLoadUnitHook implements LifecycleHook<LoadUnitLifecycleContext, LoadUnit> {
    private readonly eggPrototypeFactory;
    clazzMap: Map<EggProtoImplClass, IGraphMetadata>;
    graphCompiledNameMap: Map<string, CompiledStateGraphProto>;
    tools: Map<EggProtoImplClass, IGraphToolMetadata>;
    constructor(eggPrototypeFactory: EggPrototypeFactory);
    preCreate(ctx: LoadUnitLifecycleContext, loadUnit: LoadUnit): Promise<void>;
    createStructuredTool(clazz: EggProtoImplClass, toolMeta: IGraphToolMetadata): {
        new (): {
            init(): Promise<void>;
        };
    };
    postCreate(_ctx: LoadUnitLifecycleContext, obj: LoadUnit): Promise<void>;
}