Options not passed to loader in ExtractTextPlugin

[dpeek]

This works:

//...
module: {
  rules: [{
    // ...
  },{
    test: /\.scss$/,
    exclude: [/node_modules/],
    use: [{
      loader: 'style-loader'
    },{
      loader: 'css-loader'
    },{
      loader: 'sass-loader',
      options: {
        includePaths: [
          path.resolve('./node_modules/foundation-sites/scss'),
          path.resolve('./src/web/sass')
        ]
      }
    }]
  }]
}
// ...

While this doesn't:

const extractSass = new ExtractTextPlugin({
  filename: '[name].[contenthash:7].css',
  disable: env.dev === true,
  allChunks: true
 })
// ...
module: {
  rules: [{
    // ...
  },{
    test: /\.scss$/,
    exclude: [/node_modules/],
    loader: extractSass.extract({
      loader: [{
        loader: 'css-loader'
      },{
        loader: 'sass-loader',
        options: {
          includePaths: [
            path.resolve('./node_modules/foundation-sites/scss'),
            path.resolve('./src/web/sass')
          ]
        }
      }],
      // use style-loader in development
      fallbackLoader: 'style-loader'
    })
  }]
}
// ...

Seems like loader-utils getOptions is returning null, as the result of normalizeOptions only has the directory of the requested scss file in includePaths:

// ...
const options = normalizeOptions(this, content, webpackImporter(
    resourcePath,
    pify(this.resolve.bind(this)),
    addNormalizedDependency
));
console.log(options.includePaths);
// ...

Prints:

[ '/ws/src/web' ]
[ '/ws/src/web/containers' ]
[ '/ws/src/web/containers' ]

I'll keep digging to try and isolate what is going on.

[dpeek]

My bad, had an outdated version of ExtractTextPlugin (beta.4)