javascript 如何使用 webpack 从 node_modules 加载静态 CSS 文件的示例？
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Example of how to load static CSS files from node_modules using webpack?
提问by luzny
I don't know how to load with webpack any CSS from node_modules libs, for example I've installed leaflet and each attempt of load leaflet/dist/leaflet.cssfails.
我不知道如何使用 webpack 加载来自 node_modules 库的任何 CSS，例如我已经安装了传单并且每次加载尝试都leaflet/dist/leaflet.css失败了。
Could you provide example how to load static styles from node_modules?
您能否提供如何从 node_modules 加载静态样式的示例？
My current webpack config below. Additionaly I'm using extract-text-webpack-pluginand sass-loadermy project scss files are working well, I have also css-loader, have I to resolve static css files or add something to stylePathResolves?
我当前的 webpack 配置如下。另外我正在使用extract-text-webpack-plugin并且sass-loader我的项目 scss 文件运行良好，我也css-loader有，我是否需要解析静态 css 文件或添加一些内容stylePathResolves？
//require('leaflet/dist/leaflet.css');
var ExtractTextPlugin = require("extract-text-webpack-plugin");
var webpack = require("webpack");
var path = require('path');
var stylePathResolves = (
'includePaths[]=' + path.resolve('./') + '&' +
'includePaths[]=' + path.resolve('./node_modules')
)
module.exports = {
entry: ".js/app.js",
output: {
path: "./static/js",
filename: "app.js"
},
module: {
loaders: [{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel'
}, {
test: /\.scss$/,
loader: ExtractTextPlugin.extract(
'style',
'css' + '!sass?outputStyle=expanded&' + stylePathResolves
)
}
]
},
plugins: [new ExtractTextPlugin("app.css")]
};
Where to load leaflet.css, commented out require('leaflet/dist/leaflet.css')gives me following error:
在哪里加载传单.css，注释掉require('leaflet/dist/leaflet.css')给了我以下错误：
home/myproj/node_modules/leaflet/dist/leaflet.css:3
.leaflet-map-pane,
^
SyntaxError: Unexpected token .
采纳答案by luzny
For users who have encountered a similar problem, there are steps that I've done to get it working, I'm not sure that this equilibrium way.
对于遇到类似问题的用户，我已经采取了一些步骤来使其正常工作，我不确定这种平衡方式。
npm install file-loader --save- add
import 'leaflet/dist/leaflet.css';in main app.js - change webpack.config.js by following way:
npm install file-loader --saveimport 'leaflet/dist/leaflet.css';在主 app.js 中添加- 通过以下方式更改 webpack.config.js：
add css-loaderto get rid of SyntaxError: Unexpected token .and next add file-loaderand match files to get rid of Uncaught Error: Cannot find module "./images/layers.png":
添加css-loader以摆脱，SyntaxError: Unexpected token .然后添加file-loader和匹配文件以摆脱Uncaught Error: Cannot find module "./images/layers.png"：
module.exports = {
entry: "./web/static/js/app.js",
output: {
path: "./priv/static/js",
filename: "app.js"
},
module: {
loaders: [{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel'
}, {
test: /\.scss$/,
loader: ExtractTextPlugin.extract(
'style',
'css' + '!sass?outputStyle=expanded&' + stylePathResolves
)
}, {
test: /\.css$/,
loader: "style-loader!css-loader"
}, {
test: /\.(png|jpg|jpeg|gif|svg|woff|woff2|ttf|eot)$/,
loader: 'file-loader'
}]
},
plugins: [new ExtractTextPlugin("app.css")]
};
At the beginning I got this config from some example and it's not 100% clear why I've used ExtractTextPluginto load scss and what the correlation is with css-loader, maybe to be more coherent should I use ExtractTextPlugin also in this part, maybe someone knows and can code review? But my solution is working and I can work further.
一开始我从一些例子中得到了这个配置，并不是 100% 清楚为什么我习惯ExtractTextPlugin加载 scss 以及与 css-loader 的相关性，也许我应该在这部分也使用 ExtractTextPlugin 更加连贯，也许有人知道并且可以进行代码吗？但我的解决方案有效，我可以进一步工作。
回答by Daniel Gray
I had to do:
我必须做：
npm install --save-dev style-loader css-loader file-loader
If I didn't configure the file loader for the images, I got:
如果我没有为图像配置文件加载器，我会得到：
ERROR in ./node_modules/leaflet/dist/images/layers-2x.png 1:0
Module parse failed: Unexpected character '?' (1:0)
You may need an appropriate loader to handle this file type.
(Source code omitted for this binary file)
@ ./node_modules/leaflet/dist/leaflet.css (./node_modules/css-loader!./node_modules/leaflet/dist/leaflet.css) 7:8888-8921
@ ./node_modules/leaflet/dist/leaflet.css
@ ./src/view/component/RouteMap.js
@ ./src/index.js
ERROR in ./node_modules/leaflet/dist/images/layers.png 1:0
Module parse failed: Unexpected character '?' (1:0)
You may need an appropriate loader to handle this file type.
(Source code omitted for this binary file)
@ ./node_modules/leaflet/dist/leaflet.css (./node_modules/css-loader!./node_modules/leaflet/dist/leaflet.css) 7:8716-8746
@ ./node_modules/leaflet/dist/leaflet.css
@ ./src/view/component/RouteMap.js
@ ./src/index.js
ERROR in ./node_modules/leaflet/dist/images/marker-icon.png 1:0
Module parse failed: Unexpected character '?' (1:0)
You may need an appropriate loader to handle this file type.
(Source code omitted for this binary file)
@ ./node_modules/leaflet/dist/leaflet.css (./node_modules/css-loader!./node_modules/leaflet/dist/leaflet.css) 7:9975-10010
@ ./node_modules/leaflet/dist/leaflet.css
@ ./src/view/component/RouteMap.js
@ ./src/index.js
You also MUST import the CSS file in your index.jsor main.js(or whatever your main JS file is called). Otherwise, you get an error saying that module.exports is read-only.
您还必须在您的index.js或main.js（或任何您的主要 JS 文件调用）中导入 CSS 文件。否则，您会收到一个错误提示module.exports is read-only。
import 'leaflet/dist/leaflet.css';
A more updated webpack.config.jssnippet is:
更新的webpack.config.js片段是：
{
...
module: {
rules: [
{ test: /\.css$/, use: ["style-loader","css-loader"] },
{ test: /\.(png|svg|jpe?g|gif|woff2?|ttf|eot)$/, use: [ 'file-loader' ] },
],
},
