/**
 * Git commit detection utility
 *
 * Provides auto-detection of current git commit SHA with fallback handling
 * for edge cases like non-git repositories.
 *
 * IMPORTANT: Uses spawnSync instead of execSync to avoid WSL2 TTY/GPG hangs.
 * execSync spawns a shell which can get into weird states on WSL2.
 */
/**
 * Get the current git commit SHA (short form)
 *
 * @returns Current git commit SHA (short form, 7 characters), or "unknown" for non-git repos
 *
 * Behavior:
 * - Returns short commit SHA (7 chars) in normal git repository
 * - Returns "unknown" when not in a git repository
 * - Respects LEX_DEFAULT_COMMIT environment variable as override
 * - Respects LEX_GIT_MODE=off to skip git calls entirely
 * - Caches result for performance
 *
 * @example
 * ```ts
 * const commit = getCurrentCommit();
 * console.log(`Current commit: ${commit}`);
 * ```
 */
export declare function getCurrentCommit(): string;
/**
 * Clear the commit cache
 *
 * Useful for testing or when the commit might have changed
 * (e.g., after a new commit)
 */
export declare function clearCommitCache(): void;