export declare const isObject: <T>(value: T) => value is T & object;
export declare const getDescriptor: (inertObject: object, p: string | symbol | number) => {
    object: object;
    descriptor: TypedPropertyDescriptor<any>;
} | {
    object: undefined;
    descriptor: undefined;
};
export declare const getAllGetterKeys: (inertObject: object) => Set<string | symbol>;