export interface DynamicUnitSession {
    running: boolean;
    called: boolean;
}
export declare const startDynamicUnitSession: () => void;
export declare const finishDynamicUnitSession: () => boolean;
export interface DynamicUnit<O, R extends number | string> {
    (value?: O): R;
    key: string;
}
export declare const createDynamicUnit: <O, R extends string | number>(key: string, func: (value?: O | undefined) => R) => DynamicUnit<O, R>;