import { z } from "zod";
import type { HeapDiff } from "./heap-diff.js";
declare const signatureSchema: z.ZodObject<{
    id: z.ZodString;
    title: z.ZodString;
    nextRange: z.ZodString;
    cause: z.ZodString;
    issue: z.ZodURL;
    historical: z.ZodBoolean;
    match: z.ZodObject<{
        chainIncludes: z.ZodOptional<z.ZodString>;
        typeDeltaAbove: z.ZodOptional<z.ZodObject<{
            type: z.ZodString;
            bytes: z.ZodNumber;
        }, z.core.$strip>>;
    }, z.core.$strip>;
}, z.core.$strict>;
export type Signature = z.infer<typeof signatureSchema>;
export declare function loadSignatures(raw?: unknown[]): Signature[];
export type MatchedSignature = Pick<Signature, "id" | "title" | "cause" | "issue" | "historical">;
/**
 * Matches signatures against a diff, gated by the measured app's Next.js
 * version. Unknown version or no matching range → no annotations, no errors.
 */
export declare function matchSignatures(diff: HeapDiff, nextVersion: string | null, signatures?: Signature[]): MatchedSignature[];
/** Reads the measured app's Next.js version from its standalone bundle. */
export declare function readNextVersion(appDir: string): Promise<string | null>;
export {};