import { RefObject } from "react";
/**
 * Within `containerRef`, grow every element matching each selector in `selectors`
 * to the tallest of its peers *in the same visual row* (peers are grouped by their
 * top edge, so this adapts to 1/2/4-column layouts). Used to keep the pricing
 * cards' price row and CTA aligned when descriptions or selectors vary in length
 * across a row, without capping the content.
 *
 * `selectors` are processed in order, so put earlier-in-the-card groups first
 * (e.g. description before offer): sizing the description first aligns the offer
 * tops before the offer group is measured. Each matched element should anchor its
 * content appropriately (`justify-end` to sit against the row below, the default
 * top-anchor to leave the slack below).
 *
 * Pass a stable `selectors` reference (e.g. a module-level constant): the effect
 * re-subscribes whenever its identity changes, so an inline array would tear down
 * and rebuild the observers on every render.
 */
export declare const useMatchRowHeights: (containerRef: RefObject<HTMLElement | null>, selectors: readonly string[]) => void;
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