export declare const NPM_PACKAGE = "@yoxiang/cli";
export declare const NPM_REGISTRY = "https://registry.npmjs.org";
export type UpdateAgent = "codex" | "claude" | "all";
export type UpdateChannel = "latest";
export type UpdateCheck = {
    channel: UpdateChannel;
    current_ahead: boolean;
    current_version: string;
    target_version: string;
    update_available: boolean;
};
export type UpdateNotice = {
    update_available: true;
    current_version: string;
    latest_version: string;
    command: "yoxiang update --agent codex";
};
export type UpdateNoticeOptions = {
    cachePath?: string;
    intervalMs?: number;
    failureIntervalMs?: number;
    nowMs?: number;
    registry?: string;
    timeoutMs?: number;
};
export declare const UPDATE_NOTICE_INTERVAL_MS: number;
export declare const UPDATE_NOTICE_FAILURE_INTERVAL_MS: number;
export declare const UPDATE_NOTICE_TIMEOUT_MS = 1500;
export declare function checkForUpdate(currentVersion: string, channel: UpdateChannel, registry?: string, signal?: AbortSignal): Promise<UpdateCheck>;
export declare function updateNoticePath(env?: NodeJS.ProcessEnv): string;
export declare function checkForUpdateNotice(currentVersion: string, options?: UpdateNoticeOptions): Promise<UpdateNotice | undefined>;
export declare function installGlobalUpdate(channel: UpdateChannel, agent: UpdateAgent, registry?: string): Promise<string>;
export declare function compareVersions(left: string, right: string): number;