export interface VersionInfo {
    latest: string;
    current: string;
    updateAvailable: boolean;
    critical: boolean;
    advisory?: {
        id: string;
        summary: string;
        severity: string;
        url: string;
    };
}
export interface CachedCheck {
    timestamp: number;
    latest: string;
    critical: boolean;
    advisory?: {
        id: string;
        summary: string;
        severity: string;
        url: string;
    };
}
export interface ReleaseInfo {
    tag: string;
    critical: boolean;
    body: string;
    url: string;
}
export declare function getCurrentVersion(): string;
export declare function compareVersions(a: string, b: string): number;
export declare function parseRelease(data: unknown): ReleaseInfo;
export declare function extractAdvisory(body: string, url: string): {
    id: string;
    summary: string;
    severity: string;
    url: string;
} | undefined;
export declare function getCachedResult(projectPath: string): CachedCheck | null;
export declare function writeCache(projectPath: string, data: CachedCheck): void;
export declare function fetchReleases(perPage?: number): Promise<ReleaseInfo[]>;
export type ReleaseChannel = 'latest' | 'experimental' | 'canary';
export declare function filterByChannel(releases: ReleaseInfo[], channel: ReleaseChannel): ReleaseInfo[];
export declare function fetchLatestRelease(): Promise<ReleaseInfo>;
export declare function checkForUpdate(projectPath?: string, fetcher?: () => Promise<ReleaseInfo>): Promise<VersionInfo>;
export declare function formatUpdateMessage(info: VersionInfo): string;
export declare function logUpdateCheck(projectPath: string, info: VersionInfo): Promise<void>;
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