刚接触webpack。试图让sass-loader与我的react项目协同工作,已经按照教程进行了操作。配置似乎正确,但结果总是“无法解析'sass-loader'”。我怀疑这是一些明显的错误,但无论如何搜索或谷歌都没有找到它。感谢任何帮助。
错误信息
ERROR in ./ui/index.js
Module not found: Error: Can't resolve 'sass-loader' in '/root/src'
@ ./ui/index.js 19:0-33
@ multi webpack-hot-middleware/client?reload=true babel-polyfill ./ui/index.js
到目前为止我所做的事情(在现有的react项目上):
npm i --save-dev node-sass sass-loader
package.json文件中,在devDependencies下添加了这个依赖。
"node-sass": "^4.7.2",
"sass-loader": "^6.0.6",
"webpack": "~2.2.1",
"webpack-dev-middleware": "~1.12.0",
"webpack-hot-middleware": "~2.20.0",
"webpack-node-externals": "~1.6.0"
index.js
import React from 'react';
import ReactDOM from 'react-dom';
import { HashRouter } from 'react-router-dom';
import App from './src/App';
require('./src/styles/main.scss');
ReactDOM.render(<HashRouter><App /></HashRouter>,
document.getElementById('root'));
webpack.config.react.js:
const path = require('path');
const webpack = require('webpack');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const sourcePath = path.join(__dirname, './ui');
const extractStyle = new ExtractTextPlugin('styles.css');
//======break to module rules=======
module: {
rules: [
{
test: /\.jsx?$/,
include: sourcePath,
exclude: /node_modules/,
loader: 'babel-loader',
query: {
presets: ['react'],
},
},
{
test: /\.scss$/,
include: sourcePath,
exclude: /node_modules/,
use: extractStyle.extract('sass-loader?sourceMap'),
},
{
test: /\.css$/,
exclude: sourcePath,
loader: extractStyle.extract('css-loader'),
},
],
},
//======= break again for plugins =====
plugins: [
extractStyle,
new HtmlWebpackPlugin({
template: 'ui/index.html',
title: 'name',
}),
new webpack.HotModuleReplacementPlugin(),
new webpack.NamedModulesPlugin(),
new webpack.optimize.OccurrenceOrderPlugin(),
new webpack.NoErrorsPlugin(),
new webpack.DefinePlugin({
'process.env.NODE_ENV': JSON.stringify('development'),
}),
]
可能存在混杂因素: 这全部运行在一个开发用的Docker容器中。虽然它已经被重新构建并再次运行了npm install,但仍有可能存在混杂因素。