import { type EvoPackManifest } from "../pack/pack.ts";
import { type EvoRawFileSource } from "./registry.ts";
export declare const EVO_DISCOVERY_DEFAULT_MAX_FILE_BYTES: number;
export declare const EVO_DISCOVERY_DEFAULT_MAX_PACK_BYTES: number;
export declare const EVO_DISCOVERY_DEFAULT_MAX_PACK_FILES = 1000;
export declare const EVO_DISCOVERY_DEFAULT_TIMEOUT_MS = 30000;
export type EvoDiscoveryFetch = (url: string, init: RequestInit) => Promise<Response>;
export interface EvoPackDiscoveryTransportOptions {
    fetch: EvoDiscoveryFetch;
    maxFileBytes?: number;
    maxPackBytes?: number;
    maxPackFiles?: number;
    timeoutMs?: number;
}
export interface EvoMaterializedPack {
    directory: string;
    manifest: EvoPackManifest;
    fileCount: number;
    totalBytes: number;
}
/**
 * Verify that an immutable locator's retrieval URL is derived from its stated
 * repository/gist revision. Unknown git hosting conventions fail closed.
 */
export declare function assertEvoRawFileSourceProvenance(value: unknown): EvoRawFileSource;
/** Bounded, redirect-free raw-file retrieval over an explicitly injected fetch implementation. */
export declare class EvoPackDiscoveryTransport {
    private readonly fetchImpl;
    private readonly maxFileBytes;
    private readonly maxPackBytes;
    private readonly maxPackFiles;
    private readonly timeoutMs;
    constructor(options: EvoPackDiscoveryTransportOptions);
    private readBytes;
    readRegistryIndex(source: EvoRawFileSource, signal?: AbortSignal): Promise<string>;
    fetchPackManifest(source: EvoRawFileSource, signal?: AbortSignal): Promise<string>;
    /**
     * Materialize the exact v1 pack file set needed by the existing importer.
     * The destination must not exist and is removed on every failure.
     */
    materializePack(options: {
        source: EvoRawFileSource;
        expectedManifest: EvoPackManifest;
        destination: string;
        signal?: AbortSignal;
    }): Promise<EvoMaterializedPack>;
}
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