/**
 * Copyright 2019, SumUp Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import type { Actions, InternalState, PropGetters } from './types.js';
type Data = {
    step?: number;
    firstStep?: number;
    stepInterval?: number;
    totalSteps?: number;
    cycle?: boolean;
};
export declare function calculateNextStep(data?: Data): number;
export declare function calculatePreviousStep(data?: Data): number;
export declare function reducer(state: InternalState, action: {
    type: string;
    payload: Partial<InternalState>;
}): InternalState;
export declare function generatePropGetters(actions: Actions): PropGetters;
export {};