import type { ArkmePluginUpdateLevel } from './types.js';
export declare const ARKME_PLUGIN_PACKAGE_NAME = "@senguoyun/dsh-arkme";
export interface PluginUpdateManifestV1 {
    schemaVersion: 1;
    packageName: typeof ARKME_PLUGIN_PACKAGE_NAME;
    version: string;
    artifactUrl: string;
    artifactSize: number;
    notice: {
        level: ArkmePluginUpdateLevel;
        title: string;
        summary: string;
        releaseNotesUrl?: string;
    };
}
export interface InspectedPluginPackageTgz {
    packageName: typeof ARKME_PLUGIN_PACKAGE_NAME;
    version: string;
    files: ReadonlyMap<string, Buffer>;
}
export declare class PluginUpdateArtifactError extends Error {
    readonly code: string;
    readonly retryable: boolean;
    constructor(code: string, message: string, retryable?: boolean);
}
export declare function validatePluginUpdateServiceOrigin(raw: string): string;
export declare function validatePluginUpdateArtifactOrigin(raw: string): string;
export declare function parsePluginUpdateManifest(value: unknown, options: {
    updateServiceOrigin: string;
    artifactOrigin?: string;
}): PluginUpdateManifestV1;
export declare function pluginUpdateEndpointUrl(updateServiceOrigin: string, input: {
    appVersion?: string;
    dshVersion?: string;
    currentVersion: string;
}): URL;
export declare function inspectPluginPackageTgz(bytes: Uint8Array): InspectedPluginPackageTgz;
export declare function cachedPluginArtifactPath(cacheDirectory: string, version: string): string;
export declare function existingCachedPluginArtifactPath(cacheDirectory: string, version: string): string | undefined;
export declare function downloadAndCachePluginArtifact(manifest: PluginUpdateManifestV1, options: {
    cacheDirectory: string;
    artifactOrigin?: string;
    fetchImpl?: typeof fetch;
    requestTimeoutMs?: number;
}): Promise<string>;
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