Module build failed: TypeError: this.getResolve is not a function

[VirtualAirwaves]

• Operating System: centos 7
• Node Version: 6.17.1
• NPM Version: 3.10.10
• webpack Version: 4.4.0
• sass-loader Version: 8.0.0

Expected Behavior

I expected my SASS to compile

Actual Behavior

Module build failed: ModuleBuildError: Module build failed: TypeError: this.getResolve is not a function
    at Object.loader (/home/famserve/cb/va_web/assets/node_modules/sass-loader/dist/index.js:52:26)
    at runLoaders (/home/famserve/cb/va_web/assets/node_modules/webpack/lib/NormalModule.js:244:20)
    at /home/famserve/cb/va_web/assets/node_modules/loader-runner/lib/LoaderRunner.js:367:11
    at /home/famserve/cb/va_web/assets/node_modules/loader-runner/lib/LoaderRunner.js:233:18
    at runSyncOrAsync (/home/famserve/cb/va_web/assets/node_modules/loader-runner/lib/LoaderRunner.js:143:3)
    at iterateNormalLoaders (/home/famserve/cb/va_web/assets/node_modules/loader-runner/lib/LoaderRunner.js:232:2)          at Array.<anonymous> (/home/famserve/cb/va_web/assets/node_modules/loader-runner/lib/LoaderRunner.js:205:4)
    at Storage.finished (/home/famserve/cb/va_web/assets/node_modules/enhanced-resolve/lib/CachedInputFileSystem.js:43:1

// webpack.config.js

`const path = require('path');                                                                                           const glob = require('glob');                                                                                           const MiniCssExtractPlugin = require('mini-css-extract-plugin');                                                        const UglifyJsPlugin = require('uglifyjs-webpack-plugin');                                                              const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');                                          const CopyWebpackPlugin = require('copy-webpack-plugin');                                                                                                                                                                                       module.exports = (env, options) => ({                                                                                     optimization: {                                                                                                           minimizer: [                                                                                                              new UglifyJsPlugin({ cache: true, parallel: true, sourceMap: false }),                                                  new OptimizeCSSAssetsPlugin({})                                                                                       ]                                                                                                                     },                                                                                                                      entry: {                                                                                                                    './js/app.js': ['./js/app.js'].concat(glob.sync('./vendor/**/*.js'))                                                },                                                                                                                      output: {                                                                                                                 filename: 'app.js',                                                                                                     path: path.resolve(__dirname, '../priv/static/js')                                                                    },                                                                                                                      module: {                                                                                                                 rules: [                                                                                                                  {                                                                                                                         test: /\.js$/,                                                                                                          exclude: /node_modules/,                                                                                                use: {                                                                                                                    loader: 'babel-loader'                                                                                                }                                                                                                                     },                                                                                                                      {                                                                                                                         test: /\.css$/,                                                                                                         use: [MiniCssExtractPlugin.loader, 'css-loader']                                                                      },                                                                                                                      {                                                                                                                         test: /\.elm$/,                                                                                                         exclude: [/elm-stuff/, /node_modules/],                                                                                 use: {                                                                                                                    loader: 'elm-webpack-loader',                                                                                           options: {                                                                                                                  debug: false                                                                                                        }                                                                                                                     }                                                                                                                     },                                                                                                                      {test: /\.scss$/,                                                                                                         use: [                                                                                                                      MiniCssExtractPlugin.loader,                                                                                            {                                                                                                                         loader: 'css-loader'                                                                                                  },                                                                                                                      {                                                                                                                         loader: 'sass-loader',                                                                                                  options: {                                                                                                                sourceMap: true                                                                                                       }                                                                                                                     }                                                                                                                     ]                                                                                                                   }                                                                                                                     ]                                                                                                                     },                                                                                                                      plugins: [                                                                                                                new MiniCssExtractPlugin({ filename: '../css/app.css' }),                                                               new CopyWebpackPlugin([{ from: 'static/', to: '../' }])                                                               ]                                                                                                                     });     `                                                                                           

How Do We Reproduce?

I have been unable to get this to work at all. There seems to be something fundamentally wrong with these versions, which I presume to be the latest. I can see the call to getResolve inside the source to sass-loader/index.js so I don't know why it wasn't defined

[VirtualAirwaves]

Figured it out! I didn't have the latest version of everything. I needed webpack 4.40.2 and it fixed it. (I think 4.36.x or later would work).

[yogiprsetya]

I have same problem, how to fix it?

[hidaytrahman]

How to update webpack to the latest version?

[ngryman]

It's happening to me with webpack@4.41.2.

[ngryman]

It appears to be related with the usage of thread-loader.

When I use this loaders chain the error happens:

[
  'style-loader',
  'thread-loader',
  'css-loader',
  'sass-loader'
]

However, if I remove thread-loader everything works fine. Here is a very simple repo to reproduce that issue: https://github.com/ngryman/thread-sass-loaders-bug.

I've also opened an issue in the thread-loader's repo as I'm not sure which package has the bug: webpack-contrib/thread-loader#79.

[rbfonbuena]

Posting this in case a search sent someone here with the same issue. Downgrading from sass-loader 8.0.0 to 7.3.1 fixed it for me on new builds with Webpack 4.4.0.

[Legends]

I have this error when I install webpack v4.6