import DataLoader from 'dataloader';
import type { IdWithoutProjection, Key } from './createMongoDataLoader';
import type { PartialWithId } from './types';
import type { ObjectId } from 'mongodb';
export declare class DataLoaderNullableWithId<V extends {
    readonly _id: ObjectId;
}, K extends Key<V>, C extends string> extends DataLoader<K, PartialWithId<V>, C> {
    load<K2 extends K>(key: K2): Promise<K2 extends IdWithoutProjection ? Required<V> : V>;
    loadMany<K2 extends K>(keys: ArrayLike<K2>): Promise<(Error | PartialWithId<V>)[]>;
    loadNullable<K2 extends K>(key: K2): Promise<K2 extends IdWithoutProjection ? Required<V> | null : V | null>;
    loadManyNullable<K2 extends K>(keys: ArrayLike<K2>): Promise<ReadonlyArray<((K2 extends IdWithoutProjection ? V : V)) | null>>;
}
export default DataLoaderNullableWithId;