export interface WizardState {
    activeStep: string;
    visitedSteps: Set<string>;
}
export type WizardAction = {
    type: 'STEP_CHANGED';
    step: string;
} | {
    type: 'STRUCTURAL_CHANGE';
    affectsFrom: string;
    steps: string[];
};
export declare const createInitialState: (firstStep: string) => WizardState;
export declare const wizardReducer: (state: WizardState, action: WizardAction) => WizardState;