/// <reference types="webpack-env" />
/**
 * It will return component when hot module is active
 *
 * 该函数存在的原因是 [Is there support for Hot Module Replacement](https://github.com/microsoft/redux-dynamic-modules/issues/53#issuecomment-557649909)
 * @param hotModule 热更新环境module对象
 * @param component react组件
 *
 * ```tsx
 * import React from 'react'
 * import { hotModuleIsActive } from 'sunny-js'
 * hotModuleIsActive(module, <div />)
 * ```
 *
 * @category 热更新
 */
export declare function hotModuleIsActive<TComponent>(hotModule: __WebpackModuleApi.Module, component: TComponent): TComponent | null;