import type { FieldExpression } from '../types/Selector';
/**
 * Determines whether a given object is a valid field expression.
 * A field expression is an object containing query operators supported by MongoDB-style queries.
 * @template T - The type of the field expression.
 * @param expression - The object to test.
 * @returns A boolean indicating whether the object is a valid field expression.
 *   - `true` if the object contains only recognized query operators.
 *   - `false` otherwise.
 */
export default function isFieldExpression<T>(expression: any): expression is FieldExpression<T>;