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私はreact、reduxおよびreact-reduxを使用してストアでコンポーネントを実行しました。 コードのバンドルはwebpackで行います（下記のコードを確認してください）react、redux、およびreact-reduxで完了したコンポーネントを使用してエラーを表示し、反応アプリケーションでwebpackを使用して構築します。
私はwebpackビルドコンポーネントを別の反応プロジェクトの中で使いたいと思った時、次の問題に直面しました。
-
Warning: React.createElement: type should not be null, undefined, boolean, or number. It should be a string (for DOM elements) or a ReactClass (for composite components).
-
Uncaught Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined.
それから私は、上に行って、コードに次の変更を行い、以前の私は、接続とbindActionCreators
については、以下のような分割代入していました
import {connect} from 'react-redux';
import {bindActionCreators} from 'redux';
import actions from '../app/redux/actions';は、その後、私は周りの
import React from 'react';
import connect from 'react-redux';
import bindActionCreators from 'redux';
import actions from '../app/redux/actions';
import postal from 'postal';
const channel = postal.channel("msplayer");
class Player extends React.Component {を接続し、bindActionCreators中括弧を除去することで、以下のようにそれを変更しかし、私はこれを推測するように、その後、私は、以下のエラーに直面していますES6からES5に移行するバーベルとは関係がありますが、これを解決するためにどのような手順を実行するかわからない場合は、この解決策を得るための答えまたはいくつかのポインタを入手したいですか？
-
Uncaught TypeError: (0 , _reactRedux2.default) is not a function
-
Uncaught TypeError: Cannot read property 'PlayerWrapper' of undefined
コンポーネントコード
import React from 'react';
import {connect} from 'react-redux';
import {bindActionCreators} from 'redux';
import actions from '../app/redux/actions';
import postal from 'postal';
const channel = postal.channel("msplayer");
class Player extends React.Component {
constructor() {
super();
this.state = {
userData: {},
uiStates: {
panelClosed: true,
submissionSelected: false
},
selectedSubmission: {}
};
this.subSelectChannel = null;
this.tabSelectChannel = null;
}
componentWillMount() {
require('!style!css!../app/styles/player.css');
}
componentDidMount() {
var _that = this;
var _msData = {
piToken: this.props.piToken,
sectionId: this.props.sectionId,
assignmentId: this.props.assignmentId,
userId: this.props.userId
};
this.props.actions.getAssignmentData(msData);
this.props.actions.getPeerSubmissionData(msData);
this.subSelectChannel = channel.subscribe("submission.selected", function (data, envelope) {
_that.setState({
uiStates: Object.assign({}, _that.state.uiStates, {
"submissionSelected": true
})
}
);
_that.setState({
selectedSubmission: data.submission
}
);
});
this.tabSelectChannel = channel.subscribe("tab.selected", function (data, envelope) {
if (data.submitted) {
_that.showSubmissionDetailPanel(data.data);
} else {
_that.hideSubmissionDetailPanel()
}
});
}
closePanel() {
postal.publish({
channel: "notifier",
topic: "notifier.notify",
data: {
type: "warning",
message: "warning message"
}
});
if (this.state.uiStates.panelClosed) {
this.setState({
uiStates: Object.assign({}, this.state.uiStates, {
"panelClosed": false
})
}
);
} else {
postal.publish({
channel: "msplayer",
topic: "close.selected",
data: {}
});
this.setState({
uiStates: Object.assign({}, this.state.uiStates, {
"panelClosed": true,
"submissionSelected": false
})
}
);
}
}
hideSubmissionDetailPanel() {
console.log("inside hide submission panel");
this.setState({
uiStates: Object.assign({}, this.state.uiStates, {
"submissionSelected": false
})
}
);
};
showSubmissionDetailPanel(data) {
console.log("inside show submission panel");
this.setState({
uiStates: Object.assign({}, this.state.uiStates, {
"submissionSelected": true
})
}
);
this.setState({
selectedSubmission: data
});
};
loadUserAssignmentData(submission) {
this.setState({
uiStates: Object.assign({}, this.state.uiStates, {
"submissionSelected": true
})
}
);
postal.publish({
channel: "msplayer",
topic: "submission.selected",
data: {
submission: submission
}
});
}
componentWillUnmount() {
postal.unsubscribe(this.subSelectChannel);
postal.unsubscribe(this.tabSelectChannel);
}
render() {
var _that = this;
var _submittedKey = 0;
var _unsubmittedKey = 0;
return (
<div className="player-container col-sm-12">
<div className="row">
</div>
<div className="row">
<div className={_that.state.uiStates.panelClosed?"col-sm-12":"col-sm-8"}>
<div className="top-actions-panel">
<div className="pull-right">
</div>
</div>
<div className="common-view">
<div className="breadcrumb-panel">
<ol className="breadcrumb arrow-left">
<li><a href="#">Communication 220</a></li>
<li className="active">TED Topics for an Informative Speech</li>
</ol>
</div>
<div className="description-panel">
<p className="title">
<b>Title</b>:
<span>{_that.props.assignment.title}</span>
</p>
<p className="dueDates font-light">
<b>Due </b>:<span>{_that.props.assignment.startDate}</span>
<b> - </b><span>{_that.props.assignment.endDate}</span>
</p>
<p>
<b>Learning Objective: </b>
<span>{_that.props.assignment.learningObjective}</span>
</p>
<p>
<b>Description: </b>
<span>
{_that.props.assignment.description}
</span>
</p>
</div>
<div
className={_that.state.uiStates.submissionSelected?"row submission-info col-sm-12":"hidden"}>
<div>
<span className="student-avatar">
<img
src={(_that.state.selectedSubmission && _that.state.selectedSubmission.userDetails && _that.state.selectedSubmission.userDetails.avatar && _that.state.selectedSubmission.userDetails.avatar!=="")?_that.state.selectedSubmission.userDetails.avatar:"../app/images/avatar.svg"}/>
</span>
<p>
<b> <span
className="font-light mediaTile"><strong>{(_that.state.selectedSubmission.title && _that.state.selectedSubmission.title !== null && _that.state.selectedSubmission.title !== "") ? _that.state.selectedSubmission.title : "."}</strong></span>
</b>
</p>
<br/>
<p>
<span
className="font-light ">{(_that.state.selectedSubmission.description && _that.state.selectedSubmission.description !== null && _that.state.selectedSubmission.description !== "") ? _that.state.selectedSubmission.description : "."}</span>
</p>
</div>
</div>
<div className="common-functionality-panel col-sm-12">
</div>
</div>
</div>
<div
className={_that.state.uiStates.panelClosed?"hidden":"col-sm-4 no-padding peer-review-panel"}>
<div className="review-section">
<button className="btn btn-link pull-left close-panel"
onClick={_that.closePanel.bind(_that)}>
<span className="reader-only">Close Student Submission Panel</span>
<i className="fa fa-times"></i>
</button>
<div className="submission-tabs">
</div>
</div>
</div>
</div>
</div>
)
}
}
function mapStateToProps(state) {
return state
}
function mapDispatchToProps(dispatch) {
return {
actions: bindActionCreators(actions, dispatch)
}
}
export default connect(mapStateToProps, mapDispatchToProps)(Player)コンポーネントラッパーコード
import React from 'react';
import Player from './app';
import bb from './redux/store'
import Provider from 'react-redux';
class PlayerWrapper extends React.Component {
constructor(props) {
super(props);
}
render() {
return (
<Provider store={bb.store}><Player piToken={this.props.piToken} sectionId={this.props.sectionId}
assignmentId={this.props.assignmentId}
userId={this.props.userId}/></Provider>
)
}
}
export default PlayerWrapper;WebPACKのエラーがreactDOM.renderまでお電話（WHIであることを示し、ファイル
var webpack = require('webpack');
module.exports = {
devtool: 'inline-source-map',
entry: [
'webpack-hot-middleware/client',
'./app/PlayerWrapper.js'
],
output: {
path: require("path").resolve("./dist/app"),
filename: 'index.js',
publicPath: '/'
},
plugins: [
new webpack.optimize.OccurrenceOrderPlugin(),
new webpack.HotModuleReplacementPlugin(),
new webpack.NoErrorsPlugin()
],
module: {
loaders: [{
test: /\.js?$/,
exclude: /node_modules/,
loader: 'babel-loader',
query: {
presets: ['react', 'es2015']
}
},
{ test: /\.css$/, loader: ["css-loader","style-loader"] },
{ test: /\.scss$/, loader: "sass-loader" },
{ test: /\.(ttf|eot|svg|eot|woff|otf|png|gif)(\?v)*/, loader: "file-loader?name=fonts/[name].[ext]" }
]
}
};
ここで問題は何ですか？ 'connect'と' bindActionCreators'は名前付きのインポートなので、中括弧を使うべきです。 –
私はそれが問題を解決すると思ったことを投稿したが、後にあなたが言及したものを見つけた。今私は中括弧を使用している、私は最初のエラーを取得しています。問題を解決する方法が不思議で、最初にエラーメッセージが表示されるのはなぜですか？ –
最終的なコードを投稿してください。 –