Using SCSS mixins in an angular component.scss file: A beginner's guide

How can I properly utilize a scss mixin within an Angular component?

SITUATION

I've organized my scss mixins in a file located at /src/styles/_mixins.css and included this mixins file into the global style file styles.scss like so:

// styles.scss    
@use "variables";
@use "mixins";

However, when attempting to apply these mixins in the year-events.component.scss file of my angular component using the following syntax:

// year-events.component.scss
@use "mixins";
.events-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 2rem;

  @include mixins.screen-size('large') {
    grid-template-columns: repeat(4, 1fr)
  }
}

I encounter an error message stating:

Can't find stylesheet to import.
  ╷
1 │ @use "mixins";
  │ ^^^^^^^^^^^^^
  ╵
  src/app/calendar/components/year-events/year-events.component.scss 1:1  root stylesheet

Furthermore, despite manually importing the mixins file into my component's .ts file as advised after conducting thorough research, the same error persists.

@Component({
  selector: 'app-year-events',
  standalone: true,
  imports: [
    EventCardComponent,
  ],
  templateUrl: './year-events.component.html',
  styleUrls: ['./year-events.component.scss', '/src/styles/_mixins.scss'], // added this
})
export class YearEventsComponent implements OnInit {}

This raises the question of why the imported mixins in the global style file styles.scss do not extend their functionality to all components as expected.

Here is a snippet from my _mixins.scss file for reference:

//_mixins.scss    
@mixin screen-size($breakpoint) {
      @if $breakpoint == 'small' {
        @media (max-width: 600px) {
          @content
        }
      } @else if $breakpoint == 'medium' {
        @media (min-width: 768px) {
          @content
        }
      } @else if $breakpoint == 'large' {
        @media (min-width: 1024px) {
          @content
        }
      }
    }

To clarify, when utilizing the mixin in the styles.scss file exclusively, it operates correctly as demonstrated below:

Answer №1

To properly link to the _mixins.scss file, you must specify the relative path.

@use "../../../../styles/mixins"; 

Alternatively, you have the option to utilize the includePaths property within the stylePreprocessorOptions in your angular.json:

"stylePreprocessorOptions": {
  "includePaths": ["src/styles"]
}

This allows you to integrate your existing component code smoothly:

@use "mixins"; 

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