type Action = {
    type: 'SHOW_NEW_FEEDBACK';
    length: number;
} | {
    type: 'DUMPING_STARTED';
} | {
    type: 'DUMPING_DONE';
} | {
    type: 'ADD_MESSAGE';
    message: string;
};
type State = {
    isDumping: boolean;
    feedbackIndex: number;
    messages: string[];
    isDone: boolean;
};
export declare function Reducer(state: State, action: Action): State;
export {};