[英]Webpack - npm run start and build doesn't work?
我習慣於使用create-react-app創建 React 項目,但我決定創建一個沒有它的項目,但我被困在webpack配置中,因為我是新手:
這是我的package.json文件:
{
"name": "package.json",
"version": "1.0.0",
"description": "Demo",
"main": "index.js",
"scripts": {
"start": "webpack-dev-server --mode development --open --hot",
"build": "webpack --mode production"
},
"author": "",
"license": "MIT",
"dependencies": {
"@babel/core": "^7.12.3",
"@babel/preset-env": "^7.12.1",
"@babel/preset-react": "^7.12.1",
"babel-loader": "^8.1.0",
"css-loader": "^5.0.0",
"html-webpack-plugin": "^4.5.0",
"react": "^17.0.1",
"react-dom": "^17.0.1",
"server": "^1.0.30",
"style-loader": "^2.0.0",
"webpack": "^5.2.0",
"webpack-cli": "^4.1.0",
"webpack-dev-server": "^3.11.0"
}
}
webpack.config.js文件:
const path = require('path');
const HTMLplugin = require('html-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const rules = [
{
test: /\.js$/,
exclude: /node-modules/,
use: {
loader: 'babel-loader'
}
},
{
test: /\.css$/,
exclude: /node-modules/,
use: ['style-loader', 'css-loader']
}
]
module.exports = {
entry: path.join(__dirname, 'src', index.js),
output: {
filename: 'bundle.js',
path: path.resolve(__dirname, '/build')
},
module: {rules},
plugins: [
new HtmlWebpackPlugin({template: './public/index.html'})
]
}
.babelrc.json 文件:
{
"presets": ["@babel/preset-env","@babel/preset-react"]
}
這是我的整個項目文件夾和文件樹:
當我運行npm run start
或npm run build
時,它失敗了:
使用npm run start
,我收到此錯誤:
internal/modules/cjs/loader.js:968
throw err;
^
Error: Cannot find module 'webpack-cli/bin/config-yargs'
Require stack:
- C:\Users\saher\Desktop\New folder\node_modules\webpack-dev-server\bin\webpack-dev-server.js
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:965:15)
at Function.Module._load (internal/modules/cjs/loader.js:841:27)
at Module.require (internal/modules/cjs/loader.js:1025:19)
at require (internal/modules/cjs/helpers.js:72:18)
at Object.<anonymous> (C:\Users\saher\Desktop\New folder\node_modules\webpack-dev-server\bin\webpack-dev-server.js:65:1)
at Module._compile (internal/modules/cjs/loader.js:1137:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1157:10)
at Module.load (internal/modules/cjs/loader.js:985:32)
at Function.Module._load (internal/modules/cjs/loader.js:878:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12) {
code: 'MODULE_NOT_FOUND',
使用npm run build
:
[webpack-cli] ReferenceError: index is not defined
我是 webpack 的新手,我不知道問題出在哪里,我想我已經安裝了使其工作所需的所有文件和配置,那么問題到底在哪里?
有一個公開的錯誤報告指出 webpack-server 3.11 與 webpack-cli v4 不兼容。
該報告可在此處找到:第 2759 期
是 - webpack-dev-server 不適用於 webpack-cli v4
評論鏈接: https://github.com/webpack/webpack-dev-server/issues/2759#issuecomment-706668920
解決方案是通過更改為兼容版本來修改您的project.json
文件(歡迎使用 Webpack:-))
"main": "index.js"
in package.json
應該是"main": "src/index.js"
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