反应份额.引发错误TypeError:超级表达式必须为null或函数，在require中尝试使用超级表达式时必须未定义 [英] React-share. Throws error TypeError: Super expression must either be null or a function, not undefined when trying to use it in require
本文介绍了反应份额.引发错误TypeError:超级表达式必须为null或函数，在require中尝试使用超级表达式时必须未定义的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我是ReactJs的新手，正在尝试学习它.我安装了react-share软件包.由于我正在尝试编辑其他人的代码，因此我相信由于webpack而无法导入软件包.每次尝试导入软件包时，都会收到一条错误消息，提示导入应始终位于脚本的顶部.我尝试使用require并在控制台中收到此错误
I am new in ReactJs and trying to learn it. I installed a package of react-share. Since i am trying to edit someone else's code i am not able to import the package due to webpack I believe. Every time i try to import a package I receive an error saying the import should always be on top of the script. I tried using require and I get this error in Console
TypeError: Super expression must either be null or a function, not undefined
我的代码如下:
"use strict";
require('./../../../assets/styles/components/thread.less');
var reactShare = require('react-share');
var React = require('react');
var ReactDOM = require('react-dom');
var Fluxxor = require('fluxxor');
var _ = require("lodash");
var FluxMixin = Fluxxor.FluxMixin(React);
var StoreWatchMixin = Fluxxor.StoreWatchMixin;
var routerShape = require('react-router').routerShape;
var MicroAudioViews = require('./../../constants/MicroAudioViews');
var AudioModes = require("./../../constants/AudioModes");
var i18n = require("i18next-client");
//components
var AudioVisualizer = require('../elements/AudioVisualizer');
var ReviewOverlay = require('../elements/ReviewOverlay');
var ReviewShare = require('../elements/ReviewShare');
var Menu = require('../elements/Menu');
我必须使用react-share的
<FacebookShareButton url={shareLink} quote={title} className="social-media-icon">
<FacebookIcon size={32} round />
</FacebookShareButton>`
在Facebook上共享shareLink的组件.
Component to share the shareLink on facebook.
这里是完整代码.
/*import {
FacebookShareButton,
GooglePlusShareButton,
TwitterShareButton,
WhatsappShareButton,
FacebookIcon,
TwitterIcon,
WhatsappIcon
} from 'react-share';*/
"use strict";
require('./../../../assets/styles/components/thread.less');
var reactShare = require('react-share');
var React = require('react');
var ReactDOM = require('react-dom');
var Fluxxor = require('fluxxor');
var _ = require("lodash");
var FluxMixin = Fluxxor.FluxMixin(React);
var StoreWatchMixin = Fluxxor.StoreWatchMixin;
var routerShape = require('react-router').routerShape;
var MicroAudioViews = require('./../../constants/MicroAudioViews');
var AudioModes = require("./../../constants/AudioModes");
var i18n = require("i18next-client");
//components
var AudioVisualizer = require('../elements/AudioVisualizer');
var ReviewOverlay = require('../elements/ReviewOverlay');
var ReviewShare = require('../elements/ReviewShare');
var Menu = require('../elements/Menu');
var Review = React.createClass({
mixins:[
FluxMixin,
StoreWatchMixin("ThreadStore", "RecordStore", "ReviewStore", "ApplicationStore", "SyncStore", "DemoStore", "ShareStore")
],
contextTypes: {
router: routerShape.isRequired
},
/* react interface*/
getInitialState: function() {
var selectedThreads = [];
var shareType = 'thread';
if(this.props.location.state && this.props.location.state.type == "thread") {
selectedThreads.push(this.props.location.state.threadId);
} else if(this.props.location.state && this.props.location.state.type == "share") {
shareType = 'facebook';
} else if (this.props.location.state && this.props.location.state.type == 'sharereply') {
shareType = 'sharereply';
}
return {
threadUserId: this.props.params.id,
activeShareType: shareType,
selectedThreads: selectedThreads
};
},
getStateFromFlux: function() {
var flux = this.getFlux();
var recordStoreState = flux.store('RecordStore').getState();
var threadStoreState = flux.store('ThreadStore').getState();
var appStoreState = flux.store('ApplicationStore').getState();
var reviewStoreState = flux.store('ReviewStore').getState();
var shareStoreState = flux.store('ShareStore').getState();
var demoState = flux.store('DemoStore').getState();
var activeRecord = recordStoreState.activeRecord || null;
var activeThread = threadStoreState.activeThread;
var activeRecordUser = null;
var authenticatedUser = appStoreState.demoMode? demoState.user : appStoreState.user;
var state = {
demoMode: appStoreState.demoMode,
playing: recordStoreState.playing,
recording: recordStoreState.recording,
activeThread: activeThread,
threads: threadStoreState.threads,
authenticatedUser: authenticatedUser,
activeRecord: activeRecord,
activeShareUser: shareStoreState.user,
shareId: shareStoreState.shareId
};
return state;
},
render: function() {
var threadClass = "thread";
var fbClass = "facebook";
var explanationText, usageContent;
var finishButtonClass = 'finish-button';
if(this.state.activeShareType == "thread") {
threadClass += ' active';
explanationText = i18n.t('content:review.reviewDoneExpl', {
count: this.state.selectedThreads.length,
context: this.state.selectedThreads.length == 0 ? 'doselect' : undefined
});
finishButtonClass += this.state.selectedThreads.length == 0 ? ' inactive' : '';
var threadCards = [];
var self = this;
_.each(this.state.threads, function(thread){
var threadUser = thread.user;
var threadUserPicture = threadUser.pictures[0].source;
var userName = threadUser.firstName + ' ' + threadUser.lastName;
var styleProps = {
backgroundImage : threadUserPicture ? 'url(' + threadUserPicture + ')': 'none'
};
var cls = "thread card" + (self.state.selectedThreads.indexOf(thread.id) != -1? " selected" : "");
threadCards.push(<div key={thread.id} className={cls} onClick={self.onThreadCardSelected} data-thread-id={thread.id}>
<div className='pic' style={styleProps}></div>
<div className='name'>{userName}</div>
<div className='checked micro-audio-icon-check'></div>
</div>);
});
//if thread cards array is null then we are displaying the required text
if(threadCards.length==0){
var text= "Du hast noch keine Freunde in audiyoh hinzugefugt (gehe dafur zur Suche).";
//displaying the content
usageContent = (
<div className="usage-target-container">
<p className="chat-text">{text} <br/>Uber <img className="share-icon" src={require('./../../../assets/images/share-active.png')} /> Teilen kannst du deine Aufnahme in aderen Kanale teilen.</p>
</div>);
//displaying the button
var finishContainer = <div className="finish-container">
<div className={finishButtonClass} >Fertige</div>
<div className="finish-text"><p className="chat-underbtn-text">Mindestens <b> ein Gesprach <br/> wahlen,</b> dem die Aufnahme <br/> hinzugefugt werden soll</p></div>
</div>;
}else{
usageContent = (
<div className="usage-target-container">
{threadCards}
</div>);
}
} else {
fbClass += ' active';
finishButtonClass += ' facebook';
explanationText = i18n.t('content:review.facebookExplanation');
//displaying the input box with the link and copy button
console.log("THe shareStoreState is " + this.state.shareId);
//the shareId is generate asynchroneously, so this.state.shareId can be null
if(typeof this.state.shareId === "string") {
//the link can be created like this:
var shareLink = window.location.origin + '/shared/' + this.state.shareId;
}
var usageContent = (
<div className="usage-target-container">
<div className="socialLinkContainer">
<p> Link zum Teilen </p>
<input className="copylink" type="text" value={shareLink} id="shareLink" /><br/>
<input className="copybtn" type="button" onClick={this.copytoclipboard} value="Link kopieren" />
</div>
</div>);
var finishContainer = <div className="finish-container">
<div className="social-media">
/*<a href="" onClick=""><img className="social-media-icon" src={require('./../../../assets/images/facebook.png')} /></a>*/
<FacebookShareButton
url={shareLink}
quote={title}
className="social-media-icon">
<FacebookIcon
size={32}
round />
</FacebookShareButton>
<a href="" onClick=""><img className="social-media-icon" src={require('./../../../assets/images/whatsapp.png')} /></a>
<a href="" onClick=""><img className="social-media-icon" src={require('./../../../assets/images/twitter.png')} /></a>
<a href="" onClick=""><img className="social-media-icon" src={require('./../../../assets/images/instagram.png')} /></a>
</div>
</div>;
}
var targetSwitchElements = [
<div title={i18n.t('content:review.sharethread')}
key="thread"
className={threadClass}
onClick={this.activateThreadShareType}><span>audiyoh-chat</span></div>,<br/>,
<div title={i18n.t('content:review.sharefb')}
key="facebook"
className={fbClass}
onClick={this.activateFBShareType}><span>Teilen</span></div>
];
//we either want to save a profile record a share response, so we dont need the fb/thread switch and thread cards
if(this.props.location.state && ["profile", "sharereply"].indexOf(this.props.location.state.type) != -1) {
var buttonText = i18n.t('content:review.profile');
if(this.props.location.state.type == "sharereply"){
buttonText = i18n.t('content:review.share', {name: this.state.activeShareUser.firstName});
}
targetSwitchElements = <div className="profile-record" onClick={this.onFinishRecord}>{buttonText}</div>;
usageContent = null;
finishContainer = null;
}
return (
<div className="ma-reviewing">
<div className="review-controls">
<div className="row">
<div className="col-3">
<a title={i18n.t('content:review.delete')} className="delete" onClick={this.deleteRecording}></a>
<a title={i18n.t('content:review.redo')} className="record" onClick={this.onRecordButtonClick}></a>
</div>
<div className="col-6">
<div className="review-container">
<ReviewOverlay
activeRecordUser={this.state.authenticatedUser}
record={this.state.activeRecord}
/>
</div>
</div>
{finishContainer}
<div className="col-3">
<div className="target-switch">
<p>Weiter mit der Aufnahme</p>
{targetSwitchElements}
</div>
</div>
</div>
</div>
<div className="upper" ref="upper">
<Menu location={this.props.location} />
<div className="menu">
</div>
</div>
<div className="upperguard" ref="upperguard"></div>
<div className="lower" ref="lower">
<div className="sizing-wrapper">
{usageContent}
</div>
</div>
</div>
);
},
deleteRecording: function(e) {
e.preventDefault();
if(this.props.location && this.props.location.state.userId) {
this.context.router.push({
pathname: "/thread/" + this.props.location.state.userId,
state: this.props.location.state
});
}
else {
this.context.router.push({
pathname: "/profile",
state: this.props.location.state
});
}
},
onRecordButtonClick: function(e) {
e.preventDefault();
this.context.router.push({
pathname: "/record",
state: this.props.location.state
});
},
onThreadCardSelected: function(syntheticEvent, reactId, e) {
var target = syntheticEvent.target.parentNode;
var threadId = target.getAttribute("data-thread-id");
var idx = this.state.selectedThreads.indexOf(threadId);
if(idx != -1) {
this.state.selectedThreads.splice(idx, 1);
this.setState({
selectedThreads: [].concat(this.state.selectedThreads)
});
}
else {
this.setState({
selectedThreads: [threadId].concat(this.state.selectedThreads)
});
}
},
activateThreadShareType: function() {
if(this.state.activeShareType == "thread") {
return;
}
this.setState({
activeShareType: 'thread'
});
},
activateFBShareType: function() {
if(this.state.activeShareType == "facebook") {
return;
}
this.setState({
activeShareType: 'facebook'
});
//this will store the record and generate a shareId
this.getFlux().actions.record.local.saveRecording({
type: "share"
});
/*var state1 = this.context.router.push({
pathname: '/review',
state: {
type: "profile",
role: "main"
}
});*/
//console.log("the state1 is " + state1);
//this.getFlux().actions.record.local.saveRecording(state1);
},
copytoclipboard: function(){
var copyText = document.getElementById("shareLink");
copyText.select();
document.execCommand("copy");
console.log("Copied the text: " + copyText.value);
},
onFinishRecord: function(e) {
if(e.target.classList.contains('inactive')) {
return;
}
if(this.props.location.state && ["profile", "sharereply"].indexOf(this.props.location.state.type) != -1) {
console.log(this.props.location.state);
this.getFlux().actions.record.local.saveRecording(this.props.location.state);
}
else if(this.state.activeShareType == "facebook") {
this.getFlux().actions.record.local.saveRecording({
type: "share"
});
}
else {
var data = {
type: "thread",
threadIds: this.state.selectedThreads
};
//we started recording from a thread, so we pass the userId to be able to return to this thread
//after saving
if(this.props.location.state && this.props.location.state.type == "thread") {
data.userId = this.props.location.state.userId;
}
this.getFlux().actions.record.local.saveRecording(data);
}
}
});
module.exports = Review;
推荐答案
我发现了我的错误！
问题是我在变量reactShare中初始化了require('react-share')，并将组件用作
The problem was that I initialized the require('react-share') in a variable reactShare and was using the component as
<FacebookShareButton url={shareLink} quote={title} className="social-media-icon">
<FacebookIcon size={32} round />
</FacebookShareButton>`
相反，我应该将require语句初始化为
Instead, I should have initialized the require statement as
var FacebookShareButton = require('react-share');
由于没有正确声明React在生我的气.
Because of not declaring it properly React was yelling on me.
我希望这可以节省别人的宝贵时间.干杯！
I hope this will save someones precious time. Cheers!
这篇关于反应份额.引发错误TypeError:超级表达式必须为null或函数，在require中尝试使用超级表达式时必须未定义的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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