/**
 * Runtime detection — terminal type and user identity.
 *
 * Replicates Claude Code's logic for detecting terminal emulators
 * and generating a persistent anonymous user ID.
 */
/**
 * Detect the terminal emulator or IDE from environment variables.
 * Returns undefined if no terminal can be identified.
 *
 * Priority mirrors Claude Code: IDE-specific env vars first,
 * then TERM/TERM_PROGRAM, then terminal-specific env vars.
 */
export declare function detectTerminal(): string | undefined;
/**
 * Get or create a persistent anonymous user ID.
 *
 * Claude Code generates `randomBytes(32).toString("hex")` (64-char hex string)
 * and stores it as `userID` in `~/.claude.json`. We read from the same file
 * to share the identity. If the file doesn't exist, we generate a new ID
 * but only persist it if we can.
 */
export declare function getUserId(): string;