declare const lockPath: () => string;
declare const shouldCheck: (now: number) => boolean;
declare const recordCheck: (now: number, latest: string | null) => void;
declare const fetchLatest: () => Promise<string | null>;
declare const cachedNewerVersion: () => string | null;
declare const newer: (a: string, b: string) => boolean;
declare const isNpmGlobalInstall: () => boolean;
type SelfUpdateResult = {
    readonly ok: true;
} | {
    readonly ok: false;
    readonly reason: "locked" | "npm-failed";
    readonly stderrTail?: string;
};
declare const runSelfUpdate: () => SelfUpdateResult;
/** Detached, TTL'd: never blocks the calling turn. Safe to call from every command. */
declare const maybeSpawnBackgroundUpdate: () => Promise<void>;
/** 426 from the server: update NOW, then re-exec the (new) global bin with the original args. */
declare const handle426AndReexec: (argv: string[]) => never;
/**
 * 426 in a hook context: hint + detached background update, never block or
 * re-exec — the hook has a hard timeout and Claude/Codex inject its stdout
 * as context, so a synchronous npm install here would block the user's turn.
 * Returns whether a background update was actually spawned, so callers can
 * pick an honest agent-facing hint (a gated spawn means nothing is updating —
 * the user has to run the install themselves).
 */
declare const handle426InHook: () => boolean;
export { lockPath, shouldCheck, recordCheck, fetchLatest, newer, isNpmGlobalInstall, runSelfUpdate, maybeSpawnBackgroundUpdate, handle426AndReexec, handle426InHook, cachedNewerVersion, };