import { juggler } from '@loopback/repository';
import { Orm, SqlConnector } from './orm';
export declare function omit<T extends object = object>(obj: T, fn: (value: unknown) => boolean): Partial<T>;
export declare function compactWhere(where: object): object;
export declare function isDataSource(x: any): x is juggler.DataSource;
export declare function isSqlConnector(x: any): x is SqlConnector;
export declare function isMapper(x: any): x is Orm;
/**
 * Check if a value is attempting to use nested json keys
 * @param {String} key The property being queried from where clause
 * @returns {Boolean} True of the property contains dots for nested json
 */
export declare function isNested(key: string): boolean;
export declare const originalProp: (method: string) => string;