webpack4 mini-css-extract-plugin with bourbon - webpack-4

Question

I have my scss file which imports a scss file which further imports bourbon and bourbon-neat. I even searched various issues on the forum but did not find the issue where in the scsss to css conversion, the case is to include bourbon.
webpack 4.28.1
mini-css-extract-plugin 0.5.0
I am seeing the following error:
Child mini-css-extract-plugin node_modules/css-loader/dist/cjs.js!node_modules/sass-loader/lib/loader.js??ref--5-2!src/component/styles/main.scss:enter code here
Entrypoint mini-css-extract-plugin = *
[./node_modules/css-loader/dist/cjs.js!./node_modules/sass-loader/lib/loader.js?!./src/component/styles/main.scss] ./node_modules/css-loader/dist/cjs.js!./node_modules/sass-loader/lib/loader.js??ref--5-2!./src/component/styles/main.scss 373 bytes {mini-css-extract-plugin} [built] [failed] [1 error]
ERROR in ./src/component/styles/main.scss (./node_modules/css-loader/dist/cjs.js!./node_modules/sass-loader/lib/loader.js??ref--5-2!./src/component/styles/main.scss)
Module build failed (from ./node_modules/sass-loader/lib/loader.js):
var path = require('path');
^
Invalid CSS after "v": expected 1 selector or at-rule, was "var path = require("
in /Users/../node_modules/bourbon/index.js (line 1, column 1)
My webpack.config.js file is here
const path = require('path');
const UglifyJSPlugin = require('uglifyjs-webpack-plugin');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");
module.exports = {
entry: {
"app": ['whatwg-fetch',"./src/component/index.ts", "./src/component/styles/main.scss"],
"app-helper": "./src/component/helpers.ts"
},
output: {
path: path.resolve(__dirname, './src/component/dist'),
filename: "[name].bundle.js"
},
module: {
rules: [
{
test: /\.tsx?$/,
use: 'ts-loader',
exclude: /node_modules/
},
test: /\.(sa|sc|c)ss$/,
use: [
MiniCssExtractPlugin.loader,
'css-loader',
{
loader: "sass-loader",// compiles Sass to CSS
options: {
includePaths: [
'node_modules/bourbon/app/assets/stylesheets',
'node_modules/bourbon-neat/app/assets/stylesheets'
]
}
}
],
]
},
plugins: [
new MiniCssExtractPlugin({
filename: './src/component/dist/output-style.css',
})
],
optimization: {
minimizer:[
new UglifyJSPlugin({
cache: true,
parallel: true,
sourceMap: true // set to true if you want JS source maps
}),
new OptimizeCSSAssetsPlugin({})
]
}
}
Please provide your valuable suggestions.

Answer 1

This turns out to be an issue with sass-loader version 7.x . I changed sass-loader dependency back to 6.0.7 and it started working like charm. Here is the stackoverflow thread which helped
Angular 2 Node Bourbon Error