/**
 * The first-party Nx package set declared in nx's own
 * `nx-migrations.packageGroup`. Used by `nx report` (to know which
 * package versions to print) and by `nx add` shell completion (to
 * suggest first-party plugins). Auto-updates as new plugins land in
 * the package group — no hand-maintained list.
 */
export declare function readNxPackageGroup(): string[];