/** * Copyright (c) Meta Platforms, Inc. and affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * * @format * @oncall react_native */ export declare function greatestLowerBound(elements: ReadonlyArray, target: U, comparator: ($$PARAM_0$$: U, $$PARAM_1$$: T) => number): null | undefined | number;