import { OverridableComponentProps } from "./OverridableComponentsProps";
/**
 * Merge props that come form user and those ones that are by default
 * if incommingProps is null this returns the default props value
 *
 * @param incommingProps prop that comes from props attributoo of a React Node
 * @param defaultProps default prop defined for that  React Node
 * @returns merged props
 */
export declare function mergeProps<T extends OverridableComponentProps>(incommingProps: T | undefined, defaultProps: T): T;