import type { Severity } from "../core/models.js";
export interface PathTrieNode {
    children: Map<string, PathTrieNode>;
    /** At least one ownership path ends on this package (the vulnerable leaf). */
    terminalSeverity?: Severity;
}
/** Top level: L2 package name → subtrie. */
export type PathTrieRoot = Map<string, PathTrieNode>;
export declare function maxSeverity(a: Severity, b: Severity): Severity;
export declare function trieInsert(root: PathTrieRoot, segments: string[], severity: Severity): void;
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