export declare type Action = {
    type: "PREVENT_SUBTRACTION";
} | {
    type: "PREVENT_ADDITION";
} | {
    type: "ALLOW_ADDITION_AND_SUBTRACTION";
};
export declare const types: Record<Action["type"], string>;
export declare const preventSubtraction: () => {
    type: "PREVENT_SUBTRACTION";
};
export declare const preventAddition: () => {
    type: "PREVENT_ADDITION";
};
export declare const allowAdditionAndSubtraction: () => {
    type: "ALLOW_ADDITION_AND_SUBTRACTION";
};