/**
 * The pure layout solver.
 *
 * `resolveLayout` turns a `LayoutInput` (plain numbers) into a frozen `LayoutSnapshot`. Its only real
 * work is the two-variable scrollbar fix-point: a vertical scrollbar consumes width, which can make a
 * horizontal one necessary, which consumes height, which can make the vertical one necessary. The
 * solve is monotone — a scrollbar only ever shrinks the box, never grows it — so a single corrective
 * pass after the first guess always converges. There is no loop and no DOM.
 */
import type { LayoutInput, LayoutSnapshot } from './layoutSnapshot';
/**
 * Resolves a layout input into an immutable snapshot. Pure: same input, same output, no side effects.
 *
 * @param {LayoutInput} input The layout input.
 * @returns {LayoutSnapshot}
 */
export declare function resolveLayout(input: LayoutInput): LayoutSnapshot;