@aws-amplify/ui/dist/types/theme/components/fieldset.d.ts

`@aws-amplify/ui` contains low-level logic & styles for stand-alone usage or re-use in framework-specific implementations.

import type { Modifiers, ComponentStyles, Size, Elements } from './utils';
export type FieldsetTheme<Required extends boolean = false> = ComponentStyles & Modifiers<Size | 'outlined' | 'plain', Required> & Elements<{
    legend?: ComponentStyles & Modifiers<Size, Required>;
}, Required>;