import { ObjectID } from 'bson';
export declare const objectIdComparator: (a: ObjectID, b: string | ObjectID) => boolean;
export declare const includesObjectID: (objectIds: ObjectID[], objectId: string | ObjectID) => boolean;
export declare const asObjectID: (id: string) => ObjectID;
export declare const asObjectIDs: (ids: string[]) => ObjectID[];
/**
 * Gets _id from the document else returns the value
 * @returns {string}
 */
export declare function getObjectId(value: {
    _id: ObjectID;
} | string | ObjectID): string;
//# sourceMappingURL=dao-utils.d.ts.map