import { ObjectID } from 'bson';
import { Path } from '../src/definitions/model';
export declare function isNumber(val: any): boolean;
export declare function isInteger(val: string): boolean;
export declare function parseNumberFx(el: any): number;
export declare function parseObjectId(el: any): ObjectID;
export declare function containsStringFx(el: any): {
    $regex: string;
    $options: string;
};
export declare function replaceObjectIds(paths: Path[], object: any): void;