How to debug bundled CSS using Webpack?

Question

I switched from including styles in the oldschool way:

<link rel="stylesheet" href="./../css/main.css">

for the webpack approach:

var css = require('./../css/main.css');

This works, but I don't like the fact that it extracts css from this file into an inline tag, because then it is more difficult to debug it in Dev Tools. For example, I have no idea which file and line these attributes come from:

How can I move it to a separate file or create a source map that would point me to the source file? So when I check Dev Tools, it will look like this:

My webpack.config.js:

var autoprefixer = require('autoprefixer');

module.exports = {
    devtool: "css-loader?sourceMap",
    module:  {
        loaders: [
            {test: /\.(png|woff|woff2|eot|ttf|svg)$/, loader: 'url-loader?limit=100000'},
            {
                test:   /\.css$/,
                loader: "style-loader!css-loader!postcss-loader"
            }
        ]
    },
    entry:   [
        './static/js/app.js'
    ],
    output:  {
        filename: './static/js/bundle.js'
    },
    watch:   false,
    postcss: function () {
        return [autoprefixer];
    }
};

My app.js:

var $ = require('jquery');
window.jQuery = $;
window.$ = $;
require('bootstrap-loader');

module.exports = (function () {
    alert('IT WORKS!');
});

window.app = module.exports;
var css = require('./../css/main.css');

Answer 1

, .

webpack :

var ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
    devtool: "source-map",
    entry: 'path/to/entry.js',
    output:  {
        path: 'path/to/bundle'
        filename: 'bundle.js'
    },
    module:  {
        loaders: [
            {
                test:   /\.css$/,
                loader: ExtracTextPlugin.extract('css-loader?sourceMap')
            }
        ]
    },
    plugins: [
         new ExtractTextPlugin('styles.css')
    ]
};

, , devtool: "source-map" :

loaders: [
    {
        test:   /\.css$/,
        loader: ExtracTextPlugin.extract('css-loader?sourceMap')
    }
]

, , , sass-loader:

loaders: [
    {
        test:   /\.scss$/,
        loader: ExtracTextPlugin.extract('css-loader?sourceMap!sass-loader?sourceMap')
    }
]

, :

loaders: [
    { 
        test: /\.css$/,
        loader: ExtractTextPlugin.extract({
            fallbackLoader: "style-loader",
            loader: "css-loader?sourceMap"
        })
    }
]

, :

plugins: [
     new ExtractTextPlugin('styles.css')
]

[name] placeholder, , .