Cannot build library including math.div in SCSS

Type of Issue

[ x] Bug Report
[ ] Feature Request

Description

I recently started trying to build a library of mine with ng-packagr. The problem is that my project heavily depends on divisions within my scss files, which as per latest sass recommendation I do with math.div instead of /.

Once I try to build my library I get the following error: Invalid CSS after " @return math": expected expression (e.g. 1px, bold), was "math.div

I suspect this is related to having a sass peer dependency older than 1.33.0.

How To Reproduce

Add a math.div in your library SCSS

Expected Behaviour

Library builds normally.

Version Information

$ node_modules/.bin/ng-packagr --version
ng-packagr: 13.2.0
@angular/*: 13.1.2
typescript: 4.5.4
rxjs: 7.5.2
node: 14.18.0
npm: 6.14.15

[alan-agius4]

@angular-devkit/build-ng-packagr:build is no longer supported. Please use the ng-packagr builder in @angular-devkit/build-angular.

@angular-devkit/build-angular:ng-packagr

It is also unclear why you only have the sass version in @angular-devkit/build-angular listed when you run npm ls sass .

[github-actions[bot]]

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