Generated by SassMeister.com.

input.scss

$font-stack: sytem-ui, sans-serif;

@function font($override:null) {
    @if $override {
        @return $font-stack !important;
    }
    @else {
        @return $font-stack;
    }
}

.my-class {
    font-family: font();
}

.my-override {
    font-family: font(override);
}

output.css

.my-class {
  font-family: sytem-ui, sans-serif;
}

.my-override {
  font-family: sytem-ui, sans-serif !important;
}

settings.json

{
  "sass": {
    "compiler": "dart-sass/1.26.11",
    "extensions": {},
    "syntax": "SCSS",
    "outputStyle": "expanded"
  },
  "autoprefixer": false
}