Function safeDetail

packages/node/src/backend/nodeBackendInline.ts:159–162

(err: unknown)

type PerfSample = Readonly<{ phase: string; durationMs: number }>;

function safeDetail(err: unknown): string {
  if (err instanceof Error) return `${err.name}: ${err.message}`;
  return String(err);
}

// Little-endian u32 magic for bytes "ZREV".
const ZREV_MAGIC = 0x5645525a;