Using CSS Pre-processors

The Vite Plugin supports CSS pre-processing using external styleUrls and inline styles in the Component decorator metadata.

External styleUrls can be used without any additional configuration.

An example with styleUrls:

import { Component } from '@angular/core';

@Component({
  standalone: true,
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss'],
})
export class AppComponent {}

In order to support pre-processing of inline styles, the plugin must be configured to provide the extension of the type of styles being used.

An example of using scss with inline styles:

import { Component } from '@angular/core';

@Component({
  standalone: true,
  templateUrl: './app.component.html',
  styles: [
    `
      $neon: #cf0;

      @mixin background($color: #fff) {
        background: $color;
      }

      h2 {
        @include background($neon);
      }
    `,
  ],
})
export class AppComponent {}

In the vite.config.ts, provide and object to the angular plugin function with the inlineStylesExtension property set to the CSS pre-processing file extension.

import { defineConfig } from 'vite';
import angular from '@analogjs/vite-plugin-angular';

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => {
  return {
    // ... other config
    plugins: [
      angular({
        inlineStylesExtension: 'scss',
      }),
    ],
  };
});

Support CSS pre-processor extensions include scss, sass, less, styl, and stylus. More information about CSS pre-processing can be found in the Vite Docs.