import { ReactNode, Ref } from 'react';
export declare function concat(prefix: string, ...suffix: string[]): string;
export declare const isDev: boolean;
/** 得到 ReactNode 中的文本 */
export declare function getText(node: ReactNode): string;
/** 使用给定的值填充给定 ref，支持 ref object 或 callback ref */
export declare function fillRef<T>(ref: Ref<T>, value: T | null): void;
export declare function assert(predict: boolean | (() => boolean), message: string): void;
export declare function areArraysShallowEqual(arr1: any[], arr2: any[]): boolean;
export declare function getId(): string;