mingo/types/operators/query/element/exists.d.ts

MongoDB query language for in-memory objects

import { Any, AnyObject, Options } from "../../../types";
/**
 * Matches documents that contain or do not contain a specified field, including documents where the field value is null.
 */
export declare const $exists: (selector: string, value: Any, _options: Options) => (o: AnyObject) => boolean;