案例是有主文件夹 'Projects' 并在那里安装所有带有配置的 webpack 4 文件。 “项目”文件夹内有许多文件夹，如 “Project1”、“Project2”等...我想从 “node_modules” 入口点开始，其中 webpack.config.js 是并在那里自定义进一步的入口点，如 ./Project1/js/app.jsx，输出如 ./Project1/dist/js/main.js ，同scss和index.html，都是在'dist'文件夹下生成的。问题是总是只在主 'Projects' 文件夹中安装一次 node_modules。
package.json:
{
"name": "webpack4_example",
"version": "1.0.0",
"main": "index.js",
"browserslist": ["last 2 versions"],
"scripts": {
"build": "webpack --mode production",
"watch": "webpack --watch --mode development",
"start": "webpack-dev-server --open --mode development"
},
"devDependencies": {
"babel-core": "^6.26.3",
"babel-loader": "^7.1.4",
"babel-preset-env": "^1.7.0",
"babel-preset-react": "^6.24.1",
"babel-preset-stage-2": "^6.24.1",
"css-loader": "^0.28.11",
"html-loader": "^0.5.5",
"html-webpack-plugin": "^3.2.0",
"mini-css-extract-plugin": "^0.4.0",
"node-sass": "^4.9.0",
"postcss-loader": "^2.1.5",
"prop-types": "^15.6.1",
"react": "^16.3.2",
"react-dom": "^16.3.2",
"sass-loader": "^7.0.1",
"webpack": "^4.8.3",
"webpack-cli": "^2.1.3",
"webpack-dev-server": "^3.1.4"
}
}
webpack.config.js:
const path = require('path');
const HtmlWebPackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
module.exports = {
entry: './Project1/js/app.jsx', // customized entry point
output: {
path: path.resolve(__dirname, 'dist'),
filename: './js/out.js' // generated ./Project1/dist/js/out.js
},
watch: true,
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader'
}
},
{
test: /\.html$/,
use: [
{
loader: 'html-loader',
options: { minimize: true }
}
]
},
{
test: /\.(png|jpe?g)/i,
use: [
{
loader: 'url-loader',
options: {
name: './img/[name].[ext]',
limit: 10000
}
},
{
loader: 'img-loader'
}
]
},
{
test: /\.scss$/,
use: [
MiniCssExtractPlugin.loader,
'css-loader',
'postcss-loader',
'sass-loader'
]
}
]
},
plugins: [
new HtmlWebPackPlugin({
template: './Project1/index.html', // not sure how to set these sections
filename: 'index.html'
}),
new MiniCssExtractPlugin({
filename: '[name].css',
chunkFilename: '[id].css'
})
]
};
.babelrc:
{
"presets": ["env", "react", "stage-2"]
}
据我所知，如果没有自定义入口点，webpack 默认会搜索 'Projects/src/...' 以查找所有文件，例如 scss、js、img、index.html、index.js对它们进行操作，并将生成包含所有生成文件的 'Projects/dist' 文件夹。
上面的配置表单编译没有错误，但不会在任何地方生成“dist”文件夹，所以我不确定编译过程是否正确完成。
非常感谢任何建议和解决方案
最佳答案
解决方案(更新:添加工作观看文件):
好的，我已经设法让它工作了(起点是 node_modules 和其他 webpack4 配置文件的安装位置，在 Projects 主文件夹中)
Projects
|__Project1
| |__js
| | |__app.jsx
| |__dist //desirable result, generated dist folder
| | |__* //all generated folders/files html, js, css, img
| |__index.ejs //renamed from index.html
|
|__Project2 //etc, project folders
|
|__src // if without customized entry points it's default source
| |__folders like /_scss, /img, /js
| |__index.js
| |__index.ejs //renamed index.html, used when no customized
| //entry points are set, same as for all /src
|
|__node_modules
|__.babelrc
|__package.json
|__webpack.config.js
.babelrc 与上一篇文章相同，没有变化
在这个例子中，在 Projects 文件夹中通常会创建 src 文件夹，其中包含要通过 webpack4 传递的所有文件/文件夹，在 /src/index.js 文件必须存在，它用于导入一些其他文件
index.js 的例子
import style from "./_scss/main.scss"; //paths for Projects/src/...
import style from "./main.css";
package.json
{
"name": "webpack4_example",
"version": "1.0.0",
"main": "index.js", // the file explained just above
"browserslist": ["last 2 versions"],
"scripts": {
"dev": "webpack --mode development ./Project1/js/app.jsx --output ./Project1/dist/js/main.js",
"build": "webpack --mode production ./Project1/js/app.jsx --output ./Project1/dist/js/main.js",
"watch": "webpack --watch --mode development",
"start": "webpack-dev-server --mode development --open --watch-content-base ./Project1/js/app.jsx" //watching desired files changes live in browser
},
"devDependencies": {
"babel-core": "^6.26.3",
"babel-loader": "^7.1.4",
"babel-preset-env": "^1.7.0",
"babel-preset-react": "^6.24.1",
"babel-preset-stage-2": "^6.24.1",
"css-loader": "^0.28.11",
"html-loader": "^0.5.5",
"html-webpack-plugin": "^3.2.0",
"mini-css-extract-plugin": "^0.4.0",
"node-sass": "^4.9.0",
"postcss-loader": "^2.1.5",
"prop-types": "^15.6.1",
"react": "^16.3.2",
"react-dom": "^16.3.2",
"sass-loader": "^7.0.1",
"webpack": "^4.8.3",
"webpack-cli": "^2.1.3",
"webpack-dev-server": "^3.1.4"
}
}
where --mode production |发展 | none 表示对 dist 文件夹中的输出文件进行格式优化或不进行此类优化，为了便于阅读，请使用 none
webpack.config.js
const HtmlWebPackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
module.exports = {
module: {
rules: [
{
test: /\.(js$|jsx$)/,
exclude: /node_modules/,
use: {
loader: 'babel-loader'
}
},
{
test: /\.html$/,
use: [
{
loader: 'html-loader',
options: { minimize: true }
}
]
},
{
test: /\.(png|jpe?g)/i,
use: [
{
loader: 'url-loader',
options: {
name: './img/[name].[ext]',
limit: 10000
}
},
{
loader: 'img-loader'
}
]
},
{
test: /\.(css$|scss$)/,
use: [
MiniCssExtractPlugin.loader,
'css-loader',
'postcss-loader',
'sass-loader'
]
}
]
},
plugins: [
new HtmlWebPackPlugin({
template: './Project1/index.ejs', // entry point for html
filename: 'index.html'
}),
new MiniCssExtractPlugin({
filename: '[name].css',
chunkFilename: '[id].css'
})
],
watchOptions: { //added to make possible watch files
ignored: /node_modules/,
aggregateTimeout: 300,
poll: 1000
}
};
index.html 的自定义入口点，其中 .html 扩展名更改为 .ejs，以解决 之间引起的一些问题code>html-loader 和 html-webpack-plugin。使用 .ejs 时，输出的 html，也自动放置在 dist 文件夹中，没有优化格式并且是可读的。注意 html.ejs 是否包含带有 [out].js 文件固定路径的标记(这里是在 dist 文件夹中生成的)。从 dist 文件夹生成的 index.html 将添加另一个这样的行，因此它会加倍 -> 要删除的行。
用于运行:npm run build、npm start
关于javascript - Webpack 4 配置入口点和输出(每个项目文件夹中生成的 dist 文件夹)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50443835/