CLI移至单独的程序包中:webpack-cli [英] The CLI moved into a separate package: webpack-cli
问题描述
我是React.js的新手，我正尝试从 tutorialspoint上的教程中学习，但是我遇到了错误.这是我执行npm start命令时控制台上的错误:
I'm new to React.js and I'm trying to learn from the tutorials on tutorialspoint but I faced error. Here is the error on console when I execute npm start command:
C:\Users\HP\Desktop\reactApp1> npm start
> reactapp1@1.0.0 start C:\Users\HP\Desktop\reactApp1.
> webpack-dev-server --hot
The CLI moved into a separate package: webpack-cli.
Please install .webpack-cli. in addition to webpack itself to use the CLI.
-> When using npm: npm install webpack-cli -D
-> When using yarn: yarn add webpack-cli -D
module.js:540
throw err;
Error: Cannot find module .webpack-cli/bin/config-yargs.
at Function.Module._resolveFilenam (module.js:538:15)
at Function.Module. load (module.j5:668:25)
at Module.require (module.js,587.17)
at require (internal/module.js:11:18)
at Object•<anonymous> (C:\Users\HP\Desktop\reactApp1\node_modules\webpack-dev-server\bin\webpack-dev-server.js:65:1)
at Module. compile (module.js:663:30)
at Object.Module. extensions. .js (module.js:656:10)
at Module.load (module.js:556:32)
at tryModuleLoad (module.js:699:12)
at Function.Module. load (modul.js:691:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! reactapp@1.0.0 start: `webpack-dev-server --hot`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the reactapp@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! C:Users\HP\AppData\Roaming\npm-cache\_logs\2018-03-06T05_29_08_833Z-debug.log
package.json
{
"name": "reactapp1",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "webpack-dev-server --hot"
},
"author": "",
"license": "ISC",
"dependencies": {
"babel-core": "^6.26.0",
"babel-preset-es2015": "^6.24.1",
"babel-preset-react": "^6.24.1",
"react": "^16.2.0",
"react-dom": "^16.2.0",
"webpack": "^4.0.1",
"webpack-dev-server": "^3.1.0"
},
"devDependencies": {
"babel-loader": "^7.1.3"
}
}
webpack.config.js
var config = {
entry: './main.js',
output: {
path:'./',
filename: 'index.js',
},
devServer: {
inline: true,
port: 8090
},
module: {
loaders: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel',
query: {
presets: ['es2015', 'react']
}
}
]
}
}
module.exports = config;
main.js
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.jsx';
ReactDOM.render(<App />, document.getElementById('app'));
App.jsx
import React from 'react';
class App extends React.Component {
render() {
return (
<div>
Hello World!!!
</div>
);
}
}
export default App;
index.html
<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset = "UTF-8">
<title>React App</title>
</head>
<body>
<div id = "app"></div>
<script src = "index.js"></script>
</body>
</html>
推荐答案
我经历了相同的示例，并遇到了相同的问题.因此，按照上述答案，我首先运行了此命令-
I went through the same example and faced the same issue. So following the above answers I first ran this command -
npm install -g webpack-cli --save-dev
什么都没发生，仍然面临着同样的问题.
Nothing happened and was still facing the same issue.
然后我运行了此命令-
npm install webpack-cli --save-dev
问题已解决，但我又遇到另一个错误.
The issue was solved but I was getting another error.
在新的Webpack版本中，他们还更改了模块属性.因此，您还需要在webpack.config.js文件中进行更改.
Turns out in the new Webpack version they have changed the module attributes also. So you need to make change in the webpack.config.js file also.
module: {
rules: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel-loader',
query: {
presets: ['es2015', 'react']
}
}
]
}
因此，基本上 loader 被 module 对象内的规则取代.
So basically loaders is replaced by rules inside the module object.
我进行了更改，并且对我有用.
I made this change and it worked for me.
希望它可以帮助正在关注本教程的其他人.
Hope it helps other people who are following this tutorial.
为解决Invalid configuration object问题，我参考了此答案.
https://stackoverflow.com/a/42482079/5892553
To resolve the Invalid configuration object issue, I referred to this answer.
https://stackoverflow.com/a/42482079/5892553
这篇关于CLI移至单独的程序包中:webpack-cli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！
