export declare type StackItem = {
    name: string;
    undo: () => void;
    redo: () => void;
};
export declare type StackView = {
    name: string;
    type: "present" | "past" | "future";
}[];
export declare type RawStack = {
    past: StackItem[];
    present: StackItem;
    future: StackItem[];
};
export declare class UndoStack {
    private readonly stack;
    private readonly _onUpdateStack;
    private _updateStack;
    constructor();
    subscribe(f: () => void): void;
    unsubscribe(f: () => void): void;
    push(item: StackItem): void;
    undo(): void;
    redo(): void;
    getStack(): StackView;
}
//# sourceMappingURL=UndoStack.d.ts.map