import type { DependencyGraph } from "../graph/build.ts";
/**
 * Return the subset of node names within `depth` hops of `root` in the UNDIRECTED
 * projection of the graph. Depth 0 = just the root, depth 1 = root + immediate
 * neighbors, etc.
 */
export declare function focusSubgraph(graph: DependencyGraph, root: string, depth: number): Set<string>;