import { type LayoutResult } from '../model/layout';
import type { ColumnsOption } from '../model/columns';
export interface ApplyLayoutExtras {
    /** Fixed column count or breakpoint map; overrides `minColWidth`. */
    columns?: ColumnsOption;
    /** Height assumed for items that measure as zero. */
    estimatedItemHeight?: number;
}
/**
 * Apply JS-powered masonry layout using absolute positioning and CSS transforms.
 *
 * Placement itself is delegated to {@link computeLayout} so the vanilla engine
 * and the framework adapters cannot drift apart.
 *
 * DOM access is strictly phased to avoid layout thrashing:
 *   1. write every width (one style recalc is now pending)
 *   2. read every height (one forced reflow, amortised across all items)
 *   3. write every transform (no reads follow, so nothing is invalidated)
 *
 * @returns the computed layout, or `null` if the container has no width yet.
 */
export declare function applyMasonryLayout(container: HTMLElement, items: HTMLElement[], minColWidth: number, gutter: number, animate: boolean, duration: number, extras?: ApplyLayoutExtras): LayoutResult | null;
/**
 * Remove all JS masonry inline styles from the container and its items.
 */
export declare function removeMasonryLayout(container: HTMLElement, items: HTMLElement[]): void;