ngx-admin/src/app/@theme/styles/_components.scss

@import '../components/header/header.component.theme';
@import '../components/search-input/search-input.component.theme';
@import '../components/footer/footer.component.theme';

// TODO: probably move this file into the components folder?

@mixin custom-components-theme($theme-name) {
  @include base-header-theme($theme-name);
  @include base-footer-theme($theme-name);
  @include search-input-theme($theme-name);
}