extract text plugin not extracting css from .scss - sass

Question

I have the following webpack.cofig.js file
var path = require('path');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require("extract-text-webpack-plugin");
module.exports = {
entry: {
app: './src/main.ts',
polyfills: './src/polyfills.ts'
},
output: {
path: path.resolve('dist'),
filename: '[name].js',
publicPath: 'assets/'
},
resolve: {
// only discover files that have those extensions
extensions: ['.ts', '.js', '.json', '.css', '.scss', '.html'],
},
module: {
rules: [{
test: /\.ts$/,
exclude: /node_modules/,
loader: 'awesome-typescript-loader'
},
{
test: /\.scss$/,
use: ExtractTextPlugin.extract({
fallback: 'style-loader',
use: ['css-loader', 'sass-loader']
})
},
{
test: /\.html$/,
loader: 'html-loader'
},
{
test: /\.(png|jpe?g|gif|svg|woff|woff2|ttf|eot|ico)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
loader: 'file-loader?name=fonts/[name].[hash].[ext]?'
}
]
},
plugins: [
new ExtractTextPlugin({ filename: 'mystyle.css', disable: false, allChunks: true })
]
};
However when I run this, the css file that should be generated does not appear. I am using extract-text-webpack-plugin however this does not work. It does not throw an error, however it does not work either.

Answer 1

Ok I got this to work, the reason was that in my root app component (angular2) I had the following for referring to the main stylesheet.
styleUrls: ['./app.component.scss'],
This worked fine even without the scss loader (I am using the awesome typescript loader). However when I included the following
const styles = require('./app.component.scss');
Then the additional css got generated.