javascript - Webpack style-loader / css-loader: url() 路径解析不起作用
问题描述
有一些关于style-loader
and的 SO 帖子css-loader
,但尽管如此,我仍然无法找到解决问题的方法。
简而言之,当我@import
css
在其他css
文件中归档,并且导入的css
包含url()
具有相对路径的 s 时,路径无法正确解析。
基本上,错误消息显示 Webpack 最终认为url()
导入的 css 中的路径是相对于src
(主入口点)的,而不是相对于css
它导入的文件:
// css-one.scss
@import "./assets/open-iconic-master/font/css/open-iconic-bootstrap.css";
// open-iconic-bootstrap.css
@font-face {
src: url('../fonts/open-iconic.eot');
}
错误:
./src/main.scss 中的错误 (./node_modules/css-loader??ref--5-1!./node_modules/postcss-loader/src??ref--5-2!./node_modules/sass- loader/lib/loader.js??ref--5-3!./src/main.scss)
未找到模块:错误:无法在 “C:\Users\...\src” @ ./src/main.scss (./node_modules/css- loader??ref--5-1!./node_modules/postcss-loader/src??ref--5-2!./node_modules/sass-loader/lib/loader.js??ref--5-3! ./src/main.scss) 7:106-141 7:172-207 @ ./src/main.scss @ ./src/index.js
我试过的:
- 我试图
convertToAbsoluteUrls
在样式加载器中使用标志 - 我试图关闭所有源映射(在 style-loader docs 中提到)
我的 Webpack 配置文件(加载器在底部):
const path = require('path');
const webpack = require('webpack'); // for webpack built-in plugins
const UglifyJSPlugin = require('uglifyjs-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
// const WriteFilePlugin = require('write-file-webpack-plugin');
// const ManifestPlugin = require('webpack-manifest-plugin');
// const InlineManifestWebpackPlugin = require('inline-manifest-webpack-plugin');
// const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const PATHS = {
// when using __dirname, resolve and join gives same result,
// because __dirname is absolute path to directory of this file.
// OK to use no slashes,
// both resolve and join adds platform-specific separators by default
src: path.resolve(__dirname, 'src'),
dist: path.resolve(__dirname, 'dist'),
build: path.resolve(__dirname, 'build'),
test: path.resolve(__dirname, 'test')
};
const NAMES = {
// JS FILES
index: 'index',
print: 'print',
// Chrome Extension Development
popup: 'popup',
options: 'options',
background: 'background',
contentScript: 'contentScript',
// FOLDERS
assets: 'assets',
utilities: 'utilities',
images: 'images',
fonts: 'fonts',
include: 'include'
};
const FILE_PATHS = {
// JS
indexJs: `${path.join(PATHS.src, NAMES.index)}.js`,
printJs: `${path.join(PATHS.src, NAMES.print)}.js`,
// Chrome Extension Development
popupJs: `${path.join(PATHS.src, NAMES.popup)}.js`,
optionsJs: `${path.join(PATHS.src, NAMES.options)}.js`,
backgroundJs: `${path.join(PATHS.src, NAMES.background)}.js`,
contentScriptJs: `${path.join(
PATHS.src,
NAMES.include,
NAMES.contentScript
)}.js`,
// HTML
indexHtml: `${path.join(PATHS.src, NAMES.index)}.html`,
printHtml: `${path.join(PATHS.src, NAMES.print)}.html`,
// Chrome Extension Development
popupHtml: `${path.join(PATHS.src, NAMES.popup)}.html`,
optionsHtml: `${path.join(PATHS.src, NAMES.options)}.html`,
backgroundHtml: `${path.join(PATHS.src, NAMES.background)}.html`
};
// Third-party (vendor) libraries to include
// const VENDORS = ['react', 'bootstrap', 'lodash', 'jQuery']; // Relative paths to node_modules
// Note: These are relative
const ASSETS = {
images: path.join(NAMES.assets, NAMES.images),
fonts: path.join(NAMES.assets, NAMES.fonts)
};
// CleanWebpackPlugin config
const pathsToClean = [PATHS.dist, PATHS.build];
const cleanOptions = {
root: __dirname,
exclude: ['shared.js'],
verbose: true,
dry: false
};
// CopyWebpackPlugin config
const copyPattern = [
// {
// from: NAMES.assets,
// to: NAMES.assets
// },
// {
// from: path.join(NAMES.include, 'contentScript.css')
// },
// {
// from: 'manifest.json',
// transform(content, copyPath) {
// // generates the manifest file using the package.json informations
// return Buffer.from(
// JSON.stringify({
// ...JSON.parse(content.toString())
// // description: env.npm_package_description,
// // version: env.npm_package_version
// })
// );
// }
// }
];
const copyOptions = {
// ignore: ['*.js'],
context: PATHS.src
};
module.exports = (env = {}) => {
// webpack injects env variable, into webpack config.
// perfect to check for production.
// remember to specify --env.production in command
// (if in production mode).
const isProduction = env.production === true;
return {
entry: {
index: FILE_PATHS.indexJs
// Chrome Extension Development
// popup: FILE_PATHS.popupJs,
// contentScript: FILE_PATHS.contentScriptJs
// options: FILE_PATHS.optionsJs,
// background: FILE_PATHS.backgroundJs,
// vendor: VENDORS
},
mode: isProduction ? 'production' : 'development',
devtool: isProduction ? 'source-map' : 'inline-source-map',
optimization: {
splitChunks: {
chunks: 'all'
}
},
output: {
filename: isProduction ? '[name].[chunkhash:8].js' : '[name].js',
// chunkFilename determine name of non-entry chunk files,
// for example dynamic imports in the app
chunkFilename: isProduction ? '[name].[chunkhash:8].js' : '[name].js',
path: PATHS.dist
},
plugins: [
// new webpack.SourceMapDevToolPlugin({
// filename: '[file].map',
// exclude: ['vendor', 'runtime']
// }),
new webpack.DefinePlugin({
// specifies environment variable for dependencies.
// does not apply to browser runtime environment
// (process.env is provisioned by Node)
'process.env.NODE_ENV': isProduction ?
JSON.stringify('production') :
JSON.stringify('development')
}),
// new BundleAnalyzerPlugin(),
new CleanWebpackPlugin(pathsToClean, cleanOptions),
new MiniCssExtractPlugin({
// Options similar to the same options in webpackOptions.output
// both options are optional
// does not work with Hot Module Replacement (HMR)
// allows HMR in development (will only use this plugin in production)
filename: isProduction ? '[name].[contenthash].css' : '[name].css',
chunkFilename: isProduction ? '[id].[contenthash].css' : '[id].css'
}),
new webpack.HashedModuleIdsPlugin(),
isProduction ?
new UglifyJSPlugin({
cache: true,
parallel: true,
sourceMap: true // set to true if you want JS source maps
}) :
() => {},
new CopyWebpackPlugin(copyPattern, copyOptions),
// new WriteFilePlugin(),
new HtmlWebpackPlugin({
template: FILE_PATHS.indexHtml,
filename: `${NAMES.index}.html`
})
// new HtmlWebpackPlugin({
// template: FILE_PATHS.popupHtml,
// filename: `${NAMES.popup}.html`,
// excludeChunks: [NAMES.contentScript]
// In dev mode, chunks excluded vendor chunk (which holds CSS).
// Above check fixes it.
// }),
// new HtmlWebpackPlugin({
// filename: `${NAMES.contentScript}.html`,
// excludeChunks: [NAMES.popup, 'runtime'] // Runtime only needed in one HTML
// }),
// new HtmlWebpackPlugin({
// template: FILE_PATHS.optionsHtml,
// filename: `${NAMES.options}.html`,
// chunks: isProduction ? [NAMES.options] : ''
// }),
// new HtmlWebpackPlugin({
// template: FILE_PATHS.backgroundHtml,
// filename: `${NAMES.background}.html`,
// chunks: isProduction ? [NAMES.background] : ''
// }),
// no need for CSS minimization here <-- Done by PostCSS (cssnano)
// new InlineManifestWebpackPlugin(),
// new ManifestPlugin({fileName: 'webpack-manifest.json'}),
],
module: {
rules: [{
test: /\.js$/,
exclude: /(node_modules|bower_components)/,
use: {
loader: 'babel-loader',
options: {
presets: ['@babel/preset-env']
}
}
},
{
test: /\.s?[ac]ss$/,
exclude: /node_modules/,
use: [
isProduction ?
MiniCssExtractPlugin.loader :
{
// creates style nodes from JS strings
loader: 'style-loader',
options: {
sourceMap: true,
convertToAbsoluteUrls: true
}
},
{
// CSS to CommonJS (resolves CSS imports into exported CSS strings)
loader: 'css-loader',
options: {
sourceMap: true,
importLoaders: 2
}
},
{
loader: 'postcss-loader',
options: {
config: {
ctx: {
cssnext: {},
cssnano: {},
autoprefixer: {}
}
},
sourceMap: true
}
},
{
// compiles Sass to CSS
loader: 'sass-loader',
options: {
sourceMap: true
}
}
]
},
{
test: /\.(png|svg|jpg|gif)$/,
use: [{
loader: 'file-loader',
options: {
name: '[name].[hash:4].[ext]',
outputPath: ASSETS.images
}
}]
},
{
test: /\.(woff|woff2|eot|ttf|otf)$/,
use: [{
loader: 'file-loader',
options: {
name: '[name].[hash:4].[ext]',
outputPath: ASSETS.fonts
}
}]
},
{
test: /\.(csv|tsv)$/,
use: ['csv-loader']
},
{
test: /\.xml$/,
use: ['xml-loader']
},
{
test: /\.(html)$/,
use: {
loader: 'html-loader',
options: {
interpolate: 'require',
minimize: true
}
}
}
// {
// test: /\.tsx?$/,
// exclude: /(node_modules|bower_components)/,
// use: 'ts-loader'
// }
]
},
devServer: {
// contentBase: path.join(__dirname, 'dist'),
contentBase: PATHS.dist,
compress: false,
port: 8080,
open: false
}
};
};
解决方案
顺便说一句,您可以关闭url()
规则处理。我不知道,为什么这是默认行为。
{
loader: 'css-loader',
options: {
...
url: false,
}
},
推荐阅读
- android - 拖动时 ImageView 无法正确移动
- ruby - 带有 DocuSign_eSign gem 的 SSO 身份验证流程:“未找到或禁用指定的集成商密钥。”
- emv - 构建 MasterCard Gen AC 命令时出现问题
- session - Flutter 用于 Web Cookie/令牌会话和身份验证
- docker - Docker 容器连接到 MSSQL:昨天工作
- php - 推送通知未从 PHP api 发送
- jmespath - JMESPath 按数组中的日期过滤
- python - 我想为我的 ML Algo 制作用于医疗数据的 csv 数据集
- php - 如何在 PHP 中将函数外部化以进行并行处理
- r - 在通话记录中连接多个字符串