###报错
Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object.
###header.js 的代码
`
import React from ‘react’;
import { connect } from ‘react-redux’;
import { CSSTransition } from ‘react-transition-group’

import {
HeaderWrapper,
Logo,
Nav,
NavItem,
SearchWrapper,
NavSearch,
Addition,
Button
} from ‘./style’;

const Header = props => {
const { focused, handleInputFocus, handleInputBlur} = props;
return (

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<NavSearch
className={focused ? ‘focused’ : ‘’}
onFocus={handleInputFocus}
onBlur={handleInputBlur}
/>

<i className={focused ? ‘focused iconfont’ : ‘iconfont’}>




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注册


)
}

const mapStateToProps = state => {
return {
focused: state.focused
}
}

const mapDispatchToProps = dispatch => {
return {
handleInputFocus() {
const action = {
type: ‘search_focus’
}
dispatch(action)
},
handleInputBlur(){
const action = {
type: ‘search_focus’
}
dispatch(action)
}
}
}

export default connect(mapStateToProps, mapDispatchToProps)(Header);
`