Make missing sass-loader a friendlier message

[Timer]

Module build failed: Error: `sass-loader` requires `node-sass` >=4. Please install a compatible version.

[miraage]

sass-loader/loader.js

Does anybody see a way to catch this case except finding a node-sass substing in error?

[placenamehere]

I hit this error out of the box -- is there a missing dependency causing node-sass to not be installed? I think that's the issue, not the friendliness of the message

os x 10.13.4, yarn 1.6.0

1. npx create-react-app@next --scripts-version=2.0.0-next.66cc7a90 test_cra
2. rename App.css -> App.scss & update reference in App.js
3. cd test_cra
4. yarn start

[gaearon]

No, it’s by design. You need to explicitly install node-sass as a dependency if you want to use it. Because we don’t want to add a binary dep like this by default (they often cause problems).

The fact that this wasn’t obvious from the message means it needs work.

[placenamehere]

Got it. Was trying to glean config info from the sass related PR/thread and didn't see that called out (or any other readme like changes).

[Timer]

Resolved by #4514