import { ButtonBase } from '../button';
import { InfieldButtonSize } from './InfieldButton.types.js';
/**
 * Abstract base class for infield button components. Extends ButtonBase with a
 * restricted size set, quiet treatment, and non-focusable shadow root.
 *
 * Infield buttons are always embedded inside a form field (e.g. number field). They are
 * clickable via pointer only; they are not in the tab order and not independently focusable.
 * All keyboard behavior is owned by the parent field, which also provides the visible
 * focus ring. The parent field is expected to set the `size` attribute.
 *
 * @slot icon - Icon to display inside the button.
 *
 * @attribute {ElementSize} size - Size delegated from the parent field. Defaults to
 *   medium when no parent sets it, though standalone usage is not supported.
 */
export declare abstract class InfieldButtonBase extends ButtonBase {
    /** @internal */
    static readonly VALID_SIZES: readonly InfieldButtonSize[];
    /** @internal */
    static readonly NO_DEFAULT_SIZE = true;
    static shadowRootOptions: ShadowRootInit;
    /**
     * Applies the quiet (no-background) visual treatment. Used when the infield button
     * is part of a quiet field variant.
     */
    quiet: boolean;
}