/**
 * Build the **slot redline** layer for a component — the spacing spec.
 *
 * Where the greenlines annotate accessibility, the redlines annotate **layout**:
 * for each node that carries layout geometry, a {@link Redline} records its
 * bounding box plus the padding it insets its content by, the gap it spaces its
 * children by (`Arrangement.spacedBy`), and its corner radius. So a component and
 * its slots each get a box, and the padding *between* slots is captured as a
 * number — the redline a designer reads off a spec.
 *
 * The data is already on the {@link SemanticTree} the renderer produced
 * (`@design-parity/candidate` maps `compose/semantics`' per-node `padding` / `gap`
 * / `cornerRadius` into `tokens.spacing` / `tokens.radius`); this module just
 * surfaces it as a flat, importable layer. Pure functions over core types.
 *
 * Coverage note: this walks the **semantics** tree, so a slot that carries no
 * semantics (a decorative icon, a spacer) produces no node and so no redline.
 * Full slot coverage needs the layout/placeable tree — a renderer-side follow-up.
 */
import type { SemanticTree } from "@design-parity/core";
import type { Redline } from "./types.js";
/**
 * Walk a {@link SemanticTree} and emit a {@link Redline} for every node that
 * carries layout geometry (a box plus padding / gap / corner radius), in
 * depth-first order — the component box first, then its slots.
 */
export declare function buildRedlines(semantics: SemanticTree | undefined): Redline[];
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