import { GroupBase, StylesConfig } from "react-select";
type MenuPortalStyleFn = NonNullable<StylesConfig<unknown, boolean, GroupBase<unknown>>["menuPortal"]>;
type PortalStyleArgs = Parameters<MenuPortalStyleFn>[1];
export interface MenuGeometry {
    alignRight: boolean;
    minWidth: number;
    maxWidth: number;
}
/**
 * Derives the dropdown's alignment/sizing from the control's rect and the viewport:
 * - flips to right-aligned ("poking out" left of the control) only when the control no
 *   longer fits to the right AND flipping actually buys more room
 * - the width ceiling on the anchored side (bounded by the viewport edge, minus padding)
 *
 * It's a bare function rather than a hook because it's a pure, synchronous transform with no
 * React state of its own, called from inside `useSelect.ts`'s `styles.menuPortal` (react-select's
 * own extension point, not ours) -- there's nowhere in that call chain to invoke a hook.
 *
 * Its result is applied as an inline style on the actual menu box by useCustomComponents.tsx's
 * custom `Menu` component (via a `getMenuGeometry` getter), not on the portal itself: `MenuPortal`
 * is a zero-size, out-of-flow wrapper, and an absolutely-positioned child (the menu) doesn't
 * contribute to its shrink-to-fit sizing, so styling the portal can't drive the visible menu's
 * width or position.
 */
export declare const computeMenuGeometry: (rect: PortalStyleArgs["rect"]) => MenuGeometry;
export {};