Function parseSessionId

packages/engine.io/lib/server.ts:160–167

(data: string)

) => void;

function parseSessionId(data: string): string | undefined {
  try {
    const parsed = JSON.parse(data);
    if (typeof parsed.sid === "string") {
      return parsed.sid;
    }
  } catch (e) {}
}

// Object.hasOwn() was introduced in Node.js 16.9
function hasOwn(obj: Record<string, any>, key: string): boolean {