export declare const NODE_22_UPGRADE_GUIDANCE = "\u8BF7\u5148\u5347\u7EA7\u5230 Node.js 22 \u6216\u66F4\u9AD8\u7248\u672C";
export interface RuntimeBundleDescriptor {
    platform: NodeJS.Platform;
    arch: string;
    nodeRange: string;
    url: string;
    integrity: string;
    shasum: string;
    size: number;
}
export interface RuntimeReleaseManifest {
    schemaVersion: 1;
    package: '@agent-link/agent';
    version: string;
    publishedAt: string;
    sourceTag?: string;
    sourceCommit?: string;
    bundles: RuntimeBundleDescriptor[];
}
export interface PreparedRuntimeBundle {
    manifest: RuntimeReleaseManifest;
    bundle: RuntimeBundleDescriptor;
    bytes: Buffer;
}
export declare function getRuntimeManifestUrl(version: string): string;
export declare function validateRuntimeManifest(value: unknown, expectedVersion: string, options?: {
    allowLoopback?: boolean;
}): RuntimeReleaseManifest;
export declare function fetchRuntimeManifest(version: string, options?: {
    fetchImpl?: typeof fetch;
    manifestUrl?: string;
}): Promise<{
    manifest: RuntimeReleaseManifest;
    manifestUrl: string;
}>;
export declare function selectRuntimeBundle(manifest: RuntimeReleaseManifest, platform?: NodeJS.Platform, arch?: string): RuntimeBundleDescriptor;
export declare function assertRuntimeNodeCompatible(nodeRange: string, nodeMajor?: number): void;
export declare function verifyRuntimeBundle(bytes: Buffer, bundle: RuntimeBundleDescriptor): void;
export declare function prepareRuntimeBundle(manifest: RuntimeReleaseManifest, options?: {
    fetchImpl?: typeof fetch;
    platform?: NodeJS.Platform;
    arch?: string;
    nodeMajor?: number;
}): Promise<PreparedRuntimeBundle>;