[英]REACT.JS : Multi main Error
我是React.JS的新手(在Windows 10上),我正在執行第一個tuto,用於為React.app設置基本工作區。 但是,在我的存儲庫中全局和本地設置了webpack和babel軟件包,並制作了第一個hello word應用程序之后, 第一個構建沒有用。
我的預安裝:
npm install -g babel
npm install -g babel-cli
npm install webpack --save
npm install webpack-dev-server --save
npm install react --save
npm install react-dom --save
npm install babel-core
npm install babel-loader
npm install babel-preset-react
npm install babel-preset-es2015
因此,我的package.json包含:
{
"name": "reactapp",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "webpack-dev-server --hot"
},
"author": "",
"license": "ISC",
"dependencies": {
"babel-cli": "^6.0.0",
"babel-core": "^6.17.0",
"babel-loader": "^6.2.5",
"babel-preset-es2015": "^6.16.0",
"babel-preset-react": "^6.16.0",
"react": "^15.3.2",
"react-dom": "^15.3.2",
"webpack": "^1.13.2",
"webpack-dev-server": "^1.16.2"
}
}
我的存儲庫包含其他4個文件:index.html,App.jsx,main.js,webpack.config.js
index.html的:
<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset = "UTF-8">
<title>React App</title>
</head>
<body>
<div id = "app"></div>
<script src = "index.js"></script>
</body>
</html>
App.jsx:
import React from 'react';
class App extends React.Component {
render() {
return (
<div>
Hello World!!!
</div>
);
}
}
export default App;
main.js:
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.jsx';
ReactDOM.render(<App />, document.getElementById('app'));
webpack.config.js
var config = {
entry: './main.js',
output: {
path:'./',
filename: 'index.js',
},
devServer: {
inline: true,
port: 8123
},
module: {
loaders: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel',
query: {
presets: ['es2015', 'react']
}
}
]
}
}
module.exports = config;
因此,每當我啟動“ npm start”時,我都會得到一個失敗的構建(捕獲-attached-)
並且類似地,在localhost:8123上,我遇到了類似以下的錯誤:
有什么建議可以解決??
我只是通過刪除node_modules文件夾並重新設置npm install來解決它
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.