export declare const nonEnumerable: <T extends object>(object: T, key: string, value: any) => T;
export declare const assignConstants: <T extends object>(obj: T, constants: Record<string, any>) => void;
export declare const isObject: (value: unknown) => value is Record<string, unknown>;
export declare const deepSetter: <T extends Record<string, any>>(source: T, changes: Record<string, any>, override?: boolean) => T;
export declare function excludeKeys<T extends object, K extends keyof T>(obj: T, keysToExclude: K[]): Omit<T, K>;
type PrimitiveType = boolean | number | string | null;
export declare const isKeyValue: (value: unknown) => value is Record<string, PrimitiveType>;
export {};