node.js Sass 加载器在 webpack 中不起作用
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/30932592/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Sass loader not working in webpack
提问by ctrlplusb
I am trying to get *.scss files to be supported in my webpack configuration but I keep getting the following error when I run the webpack build command:
我试图在我的 webpack 配置中获得支持的 *.scss 文件，但是当我运行 webpack 构建命令时，我不断收到以下错误：
ERROR in ./~/css-loader!./~/sass-loader!./app/styles.scss
Module build failed: TypeError: Cannot read property 'sections' of null
at new SourceMapConsumer (/Users/sean/Development/playground/webpack.sass.test/node_modules/css-loader/node_modules/postcss/node_modules/source-map/lib/source-map/source-map-consumer.js:23:21)
at PreviousMap.consumer (/Users/sean/Development/playground/webpack.sass.test/node_modules/css-loader/node_modules/postcss/lib/previous-map.js:37:34)
at new Input (/Users/sean/Development/playground/webpack.sass.test/node_modules/css-loader/node_modules/postcss/lib/input.js:42:28)
at parse (/Users/sean/Development/playground/webpack.sass.test/node_modules/css-loader/node_modules/postcss/lib/parse.js:17:17)
at new LazyResult (/Users/sean/Development/playground/webpack.sass.test/node_modules/css-loader/node_modules/postcss/lib/lazy-result.js:54:47)
at Processor.process (/Users/sean/Development/playground/webpack.sass.test/node_modules/css-loader/node_modules/postcss/lib/processor.js:30:16)
at processCss (/Users/sean/Development/playground/webpack.sass.test/node_modules/css-loader/lib/processCss.js:168:24)
at Object.module.exports (/Users/sean/Development/playground/webpack.sass.test/node_modules/css-loader/lib/loader.js:21:15)
@ ./app/styles.scss 4:14-117
I can't for the life of me figure out why. It's a very basic setup.
我终其一生都无法弄清楚原因。这是一个非常基本的设置。
I have created a dropbox share with the bare minimum illustrating this: https://www.dropbox.com/s/quobq29ngr38mhx/webpack.sass.test.zip?dl=0
我创建了一个最低限度的 Dropbox 共享来说明这一点：https: //www.dropbox.com/s/quobq29ngr38mhx/webpack.sass.test.zip?dl=0
Unzip this then run:
解压这个然后运行：
npm install
webpack
Here is my webpack.config.js file:
这是我的 webpack.config.js 文件：
var path = require('path')
var webpack = require('webpack')
module.exports = {
devtool: 'eval',
entry: [
'./app'
],
output: {
path: path.join(__dirname, 'dist'),
filename: 'index.js',
publicPath: '/dist/'
},
plugins: [
new webpack.NoErrorsPlugin()
],
resolve: {
extensions: ['', '.js']
},
module: {
loaders: [{
test: /\.scss$/,
loader: 'style-loader!css-loader!sass-loader'
}]
}
}
And the index.js entry file:
和 index.js 入口文件：
require('./styles.scss');
alert('foo bar baz');
And the styles.scss file:
和 style.scss 文件：
body {
background-color: #000;
}
It appears to follow the recommendations of the sass-loader documentation site, but I can't get it to run.
它似乎遵循 sass-loader 文档站点的建议，但我无法运行它。
:(
:(
Information about my environment:
关于我的环境的信息：
node - 0.12.4
npm - 2.10.1
os - OS X Yosemite
回答by ctrlplusb
I have managed to get another workaround working that doesn't involve editing the css-loader libraries within my npm_modules directory (as per the answer by @chriserik).
我设法找到了另一种解决方法，它不涉及在我的 npm_modules 目录中编辑 css-loader 库（根据@chriserik 的回答）。
If you add '?sourceMap' to the sass loader the css loader seems to handle the output.
如果将 '?sourceMap' 添加到 sass 加载器，则 css 加载器似乎可以处理输出。
Here is my updated configuration:
这是我更新的配置：
var path = require('path')
var webpack = require('webpack')
module.exports = {
devtool: 'eval',
entry: [
'./app'
],
output: {
path: path.join(__dirname, 'dist'),
filename: 'index.js',
publicPath: '/dist/'
},
plugins: [
new webpack.NoErrorsPlugin()
],
resolve: {
extensions: ['', '.js']
},
module: {
loaders: [{
test: /\.scss$/,
loader: 'style!css!sass?sourceMap'
}]
}
}
P.S. I even expanded this test to include a compass-mixins include, and this worked too.
PS我什至扩展了这个测试以包括一个指南针混合包含，这也有效。
回答by chriserik
After having the same issue, I found this: https://github.com/webpack/css-loader/issues/84
遇到同样的问题后，我发现了这个：https: //github.com/webpack/css-loader/issues/84
Apparently, the solution for now is to manually modify lines 17-19 of /node_modules/css-loader/lib/loader.js with
显然，现在的解决方案是手动修改 /node_modules/css-loader/lib/loader.js 的第 17-19 行
if(map && typeof map !== "string") {
map = JSON.stringify(map);
}
This fixed the problem for me.
这为我解决了问题。
回答by maioman
The problem is solved by setting source-mapoption to true (as seen in other answers).
通过将source-map选项设置为 true（如其他答案中所示）来解决问题。
But in case you find messy passing options in the query string there is an alternative;
但是，如果您在查询字符串中发现混乱的传递选项，则有另一种选择；
for configuring the sass loader you can create a sassLoaderproperty in the webpack config object:
要配置 sass 加载器，您可以sassLoader在 webpack 配置对象中创建一个属性：
module.exports = {
devtool: 'eval',
entry: [
'./app'
],
output: {
path: path.join(__dirname, 'dist'),
filename: 'index.js',
publicPath: '/dist/'
},
plugins: [
new webpack.NoErrorsPlugin()
],
resolve: {
extensions: ['', '.js']
},
module: {
loaders: [{
test: /\.scss$/,
loader: 'style!css!sass'
// loader: ExtractPlugin.extract('style', 'css!sass'),
}]
},
sassLoader: {
sourceMap: true
},
}
