import type { ResolvedFrame, ResolvedPageTemplate } from './types.js';
import type { Rect } from './geometry.js';
export interface GrowMembers {
    frames: string[];
    groups: string[];
}
/**
 * What `box` grows with: with `'children'`, the frames and groups anchored
 * to a point of its top side, then, round after round, every frame and
 * group anchored to one of those (any edge: a caption `below` its picture),
 * and the frames of a group taken (a grid's instances included); with a
 * list, the frames and groups it names. The box itself, and frames that
 * anchor to it by its foot or middle (they move with its height), never.
 */
export declare function growMembers(template: Pick<ResolvedPageTemplate, 'frames' | 'groups'>, box: ResolvedFrame): GrowMembers;
/**
 * The height `box` needs to hold its members as laid: from its top to the
 * lowest foot among them, and its bottom padding (`padBottom`, px).
 * `undefined` when none of them is laid, or when the box is tall enough
 * already (within half a pixel).
 */
export declare function grownHeight(box: Rect, members: readonly Rect[], padBottom: number): number | undefined;
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