app/node_modules/@angular/cdk/_index.scss

@forward './overlay' show overlay, $overlay-container-z-index, $overlay-z-index,
  $overlay-backdrop-z-index, $overlay-backdrop-color;
@forward './a11y' show a11y-visually-hidden, high-contrast;
@forward './text-field' show text-field-autosize, text-field-autofill,
  text-field-autofill-color,
  // `text-field` is deprecated, but we have to export it
  // here in order for the theming API schematic to work.
  text-field;