export declare const shallowEquals: <T extends {}>(a: T, b: T) => boolean;
export declare const shallowEqualByKeys: <T extends {}>(a: T, b: T, keys: (keyof T)[]) => boolean;
export declare const generatorIdFactory: () => {
    switchToGenerator: (id: number) => () => void;
    newId: () => number;
    isGeneratorRunning: (id: number) => boolean;
};
export declare const unwindGenerator: <T>(gen: Generator<Promise<T>, void, T>, shouldContinue: () => boolean) => void;