import DataLoader from 'dataloader';
import { GraphQLResolveInfo } from 'graphql';
import { BaseEntity, ObjectType } from 'typeorm';
import type { PrimaryKey } from '../common';
import type { DefaultRegisteredLoaders } from './context';
export interface DataLoaderFunction<Entity extends BaseEntity> {
    load: ((id?: PrimaryKey) => Promise<Entity>) & ((ids?: PrimaryKey[]) => Promise<Entity[]>);
}
export declare function loader<Entity extends BaseEntity>(entity: typeof BaseEntity, opts?: {
    isPublished?: boolean;
    loadRelationIds?: boolean;
}): DataLoaderFunction<Entity>;
export declare class DataloaderCleaner {
    static redisLoaders: Record<string, any>;
    static reg(segment: string, loader: any): void;
    static clear(segment: string, id: PrimaryKey): void;
}
export declare class GenericDataLoader<T extends DefaultRegisteredLoaders> {
    static _loaders: any;
    constructor();
    static loaders<Loaders = DefaultRegisteredLoaders>(): Loaders;
    initLoaders(loaders: T): void;
    createLoaders(): T;
}
export declare function cachedDataLoader(segment: string, fn: any): DataLoader<PrimaryKey, any>;
export declare function cachedPerRequestDataLoader(segment: string, fn: any): DataLoader<PrimaryKey, any>;
/**
 * 解析出 graphql 参数中的关联字段
 */
export declare function resolveRelationsFromInfo(info: GraphQLResolveInfo, path: string): boolean | {
    relations?: string[];
    disableMixedMap?: boolean;
};
export declare function resolveSelectsFromInfo(info: GraphQLResolveInfo, path: string): string[] | null;
export declare const resolveFieldsByPagedMixInfo: <Entity>(entity: ObjectType<Entity>, info: GraphQLResolveInfo) => {
    mixedFields: string[];
    relations: boolean | {
        relations?: string[];
        disableMixedMap?: boolean;
    };
    select: (keyof Entity)[];
};
export declare const resolveFieldsByPagedInfo: <Entity>(entity: ObjectType<Entity>, info: GraphQLResolveInfo) => {
    relations: boolean | {
        relations?: string[];
        disableMixedMap?: boolean;
    };
    select: (keyof Entity)[];
};