Provide source maps support

[alexeyuzlov]

There is no source map after using extract. For example in this chain:
style/url!file!extract!css

[jhnns]

That's true. Source maps are currently not supported. I'm working on that.

[RobertoUa]

How long do you think it's gonna take?

[jhnns]

I'm sorry, too much work currently. If anyone is interested, please go ahead :). The code is fairly simple and I can give you support.

[ukch]

@jhnns I can work on it if you show me where to start. (I'm pretty new to Webpack development though)

[wujekbogdan]

@Sentika

This is my scss compilation/extraction section of my webpack config file:

{
    test: /\.scss$/,
    use: [
        {
            loader: 'file-loader',
            options: {
                name: '[name].css',
                context: './src/css/',
                outputPath: 'css/',
                publicPath: '../'
            }
        },
        {
            loader: 'extract-loader'
        },
        {
            loader: 'css-loader',
            options: {
                sourceMap: true
            }
        },
        {
            loader: 'resolve-url-loader'
        },
        {
            loader: 'postcss-loader'
        },
        {
            loader: 'sass-loader',
            options: {
                sourceMap: true
            }
        }
    ]
}

And I can see sourcemaps, but instead of separate .map files (as they should be because of devtool: '#source-map' in the configuration file) they are merged into *.css files at the end of *.css files. There's an another side-effect: paths in sourcemaps are absolute (c:/your/project/directory/file-name-css)

It's a workaround, not a solution, but at least works.

[jerome-barbato]

Is there any ETA ?

[jstrimpel]

@jhnns, @benurb I would like to contribute this enhancement if someone can direct me to documentation and/or provide a brief description of what it means for the loader to support sourcemaps in Webpack. Thanks.