eyeglass-restyle/test/fixtures/restyle-private.scss

@import "restyle";

// define our UI element...
@include restyle-define(test, (
  restyle-modifiers: (
    // we CAN extend private within the same defn
    extends: (
      restyle-extends: private,
      extends: true
    ),
    // we CAN alias private within the same defn
    aliases: (
      restyle-alias: private this
    ),
    // we CAN alias external public modifiers
    external-extends: (
      restyle-alias: extends test2
    ),
    // we CANNOT alias external private modifiers
    external-private: (
      restyle-alias: private test2
    ),
    // we CANNOT reference private directly
    restyle-private(private): (
      private: true
    )
  )
));

@include restyle-define(test2, (
  restyle-modifiers: (
    extends: (
      restyle-extends: private,
      external-extends: true
    ),
    restyle-private(private): (
      external-private: true
    )
  )
));

.test {
  @include restyle(test);
  &.extends {
    @include restyle(extends test);
  }
  &.aliases {
    @include restyle(aliases test);
  }
  // we cannot reference private directly
  &.private {
    @include restyle(private test);
  }
  // ensure that `restyle-private(...)` does not allow us to bypass the restriction
  &.private-fn {
    @include restyle(restyle-private(private) test);
  }

  &.external-extends {
    @include restyle(external-extends test);
  }
  &.external-private {
    @include restyle(external-private test);
  }
}