import type { ComponentType, ReactNode, ComponentProps } from 'react';
export declare function mapChildren<T>(children: ReactNode, cb: (node: ReactNode, index: number) => T): T[];
export declare function prefixClassName(prefix: string): (val?: string) => string;
export declare function mergeProp<T>(internal: T, prop: T | undefined): T;
export declare function mergeDefaultProps<T extends ComponentType>(comp: T, props: Partial<ComponentProps<T>>): T;