Error: Can't resolve 'normalize-url' with HMR enabled

• Operating System: Windows 10 Home
• Node Version: v10.15.3
• NPM Version: 6.4.1
• webpack Version: 4.30.0
• mini-css-extract-plugin Version: 0.6.0

Expected Behavior

No error with HMR enabled.

Actual Behavior

This error with HMR enabled:

ERROR in ../node_modules/mini-css-extract-plugin/dist/hmr/hotModuleReplacement.js
Module not found: Error: Can't resolve 'normalize-url' in 'C:\Users\Glen\Desktop\css-hmr-issue\node_modules\mini-css-extract-plugin\dist\hmr'
 @ ../node_modules/mini-css-extract-plugin/dist/hmr/hotModuleReplacement.js 18:19-43
 @ ./app/styles/main.scss
 @ ./main.ts
 @ ../node_modules/aurelia-webpack-plugin/runtime/empty-entry.js
 @ multi aurelia-webpack-plugin/runtime/empty-entry aurelia-webpack-plugin/runtime/pal-loader-entry aurelia-bootstrapper

Change hmr: isHot to hmr: false (twice), and the error will go away.

Could this be an issue with aurelia-webpack-plugin? All I know is that it works with MCEP 0.5.0 + css-hot-loader.

Code

https://github.com/glen-84/css-hmr-issue/blob/master/webpack.config.js

How Do We Reproduce?

https://github.com/glen-84/css-hmr-issue (npm i, npm start)

(this is a copy of our project that I reduced from ~571 files to 31)

[glen-84]

This seems to have just stopped happening in the repro project. 😕

I’m going to try it again in our real project, and see what happens.

[glen-84]

I can swear that I deleted node_modules and package-lock.json yesterday, and it didn’t work. I just did it again now (along with npm cache clear --force), and now it’s working! 🎉

(sorry about the false alarm)