我是 JavaScript 的新手。为了学习 JavaScript，我从 GitHub ( https://github.com/wbkd/webpack-starter ) 克隆了 webpack-starter 项目。然后，我在npm install桌面上的克隆文件夹中运行 a，然后在 Git Bash 控制台中npm audit fix看到一条消息时运行 a。found 1 low severity vulnerability然后，我看到了这条消息，npm WARN webpack-dev-middleware@3.7.2 requires a peer of webpack@^4.0.0 but none is installed. You must install peer dependencies yourself.
在调查上述警告之前，我npm start从项目文件夹中运行了 PowerShell。我没有收到任何错误消息，但我的浏览器 (Chrome) 从未启动。
然后，我调查了这npm WARN条消息，发现了这个，https://stackoverflow.com/a/64733624/9698039，这导致了我，https://github.com/webpack/webpack-dev-server/issues/2807# issuecomment-734982609，这导致我决定将我的 webpack 版本从 ^5.10.0 降级为“webpack”：“^4.0.0”。
在降级之前，这是我的package.json：
{
"name": "webpack-starter",
"version": "1.0.0",
"description": "A light foundation for your next frontend project based on webpack.",
"scripts": {
"lint": "npm run lint:styles; npm run lint:scripts",
"lint:styles": "stylelint src",
"lint:scripts": "eslint src",
"build": "cross-env NODE_ENV=production webpack --config webpack/webpack.config.prod.js",
"start": "webpack serve --config webpack/webpack.config.dev.js"
},
"repository": {
"type": "git",
"url": "git+https://github.com/wbkd/webpack-starter.git"
},
"keywords": [
"webpack",
"startkit",
"frontend",
"es6",
"javascript",
"webdev"
],
"author": "webkid.io",
"license": "MIT",
"bugs": {
"url": "https://github.com/wbkd/webpack-starter/issues"
},
"devDependencies": {
"@babel/core": "^7.12.9",
"@babel/plugin-proposal-class-properties": "^7.12.1",
"@babel/plugin-syntax-dynamic-import": "^7.8.3",
"@babel/preset-env": "^7.12.7",
"babel-eslint": "^10.1.0",
"babel-loader": "^8.2.2",
"clean-webpack-plugin": "^3.0.0",
"copy-webpack-plugin": "^6.4.0",
"cross-env": "^7.0.3",
"css-loader": "^5.0.1",
"eslint": "^7.15.0",
"eslint-loader": "^4.0.2",
"file-loader": "^6.2.0",
"html-loader": "^1.3.2",
"html-webpack-plugin": "^4.5.0",
"mini-css-extract-plugin": "^1.3.2",
"node-sass": "^5.0.0",
"postcss-loader": "^4.1.0",
"sass-loader": "^10.1.0",
"style-loader": "^2.0.0",
"stylelint": "^13.8.0",
"stylelint-config-standard": "^20.0.0",
"stylelint-webpack-plugin": "^2.1.1",
"webpack": "^5.10.0",
"webpack-cli": "^4.2.0",
"webpack-dev-server": "^3.11.0",
"webpack-merge": "^5.4.0"
},
"dependencies": {
"@babel/polyfill": "^7.12.1",
"core-js": "^3.8.1"
}
}
这是我的webpack.config.dev.js：
const Path = require('path');
const Webpack = require('webpack');
const { merge } = require('webpack-merge');
const StylelintPlugin = require('stylelint-webpack-plugin');
const common = require('./webpack.common.js');
module.exports = merge(common, {
mode: 'development',
devtool: 'eval-cheap-source-map',
output: {
chunkFilename: 'js/[name].chunk.js',
},
devServer: {
inline: true,
hot: true,
},
plugins: [
new Webpack.DefinePlugin({
'process.env.NODE_ENV': JSON.stringify('development'),
}),
new StylelintPlugin({
files: Path.join('src', '**/*.s?(a|c)ss'),
}),
],
module: {
rules: [
{
test: /\.js$/,
include: Path.resolve(__dirname, '../src'),
enforce: 'pre',
loader: 'eslint-loader',
options: {
emitWarning: true,
},
},
{
test: /\.html$/i,
loader: 'html-loader',
},
{
test: /\.js$/,
include: Path.resolve(__dirname, '../src'),
loader: 'babel-loader',
},
{
test: /\.s?css$/i,
use: ['style-loader', 'css-loader?sourceMap=true', 'postcss-loader', 'sass-loader'],
},
],
},
});
为了降级 webpack，我在 package.json 中更改"webpack": "^5.10.0"为"webpack": "^4.0.0"，然后npm install再次从 Git Bash 运行。
然后，我npm start再次从 PowerShell 运行，再次没有看到任何错误消息，并且我看到了该Compiled successfully消息，但浏览器再次没有启动。似乎 webpack 对等依赖问题与浏览器启动失败问题无关，但我是 JavaScript 新手，因此目前无法 100% 有信心地提出这一主张。