import { type FC, type ReactNode } from 'react';
/**
 * Mirrors the shape of GSK's `Button` icon props, where a prop is a union of a
 * component type and `ReactNode` (`FC<…> | ReactNode`). Because `FC` is not
 * assignable to `ReactNode`, TypeScript keeps this a real union and expands the
 * `ReactNode` alias into its constituents — which previously caused the prop to
 * infer as a plain string field instead of a ReactNode slot.
 */
interface UnionReactNodeProps {
    /** Component-or-node union, like an icon slot. Should be a slot. */
    iconLeading?: FC<{
        className?: string;
    }> | ReactNode;
    /** Plain string-or-node union. Should be a slot. */
    label?: string | ReactNode;
    /** Bare ReactNode. Should be a slot (regression guard for the existing path). */
    iconTrailing?: ReactNode;
    /** Enum union — must stay a prop, NOT be treated as a slot. */
    size?: 'sm' | 'md' | 'lg';
    /** Enum whose value happens to be the literal "ReactNode" — must stay a prop. */
    display?: 'ReactNode' | 'text';
}
export declare const UnionReactNode: ({ iconLeading, label, iconTrailing, size, display, }: UnionReactNodeProps) => import("react/jsx-runtime").JSX.Element;
/**
 * Faithfully mirrors GSK's `Button`: the props type is itself a UNION of two
 * interfaces (button vs. link) that share `iconLeading: FC<…> | ReactNode`.
 * That extra union-of-interfaces level is what nests the icon prop one deeper
 * than a plain object props type — the exact shape that must still route the
 * icon prop to a ReactNode slot.
 */
interface IconButtonCommonProps {
    /** Component-or-node union, like an icon slot. Should be a slot. */
    iconLeading?: FC<{
        className?: string;
    }> | ReactNode;
    /** Enum union — must stay a prop. */
    size?: 'sm' | 'md' | 'lg';
}
interface IconButtonAsButtonProps extends IconButtonCommonProps {
    type?: 'button' | 'submit' | 'reset';
}
interface IconButtonAsLinkProps extends IconButtonCommonProps {
    href?: string;
}
export type UnionPropsIconButtonProps = IconButtonAsButtonProps | IconButtonAsLinkProps;
export declare const UnionPropsIconButton: (props: UnionPropsIconButtonProps) => import("react/jsx-runtime").JSX.Element;
export {};
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