gcp cloud function using statsig-node server sdk

gcp_function.js

const statsig = require('statsig-node');

let requestsHandled = 0;
const initStart = Date.now();
let initEnd = 0;
let initialized = false;
const initializationPromise = statsig.initialize(process.env.sdkKey).then(() => {
  initEnd = Date.now();
  initialized = true;
});

/**
 * Responds to any HTTP request.
 *
 * @param {!express:Request} req HTTP request context.
 * @param {!express:Response} res HTTP response context.
 */
exports.statsig = async (req, res) => {
  const functionStart = Date.now();
  requestsHandled++;
  if (!initialized) {
    await initializationPromise;
  }
  const alwaysOnGateValue = await statsig.checkGate({userID: 'gcp'}, 'always_on_gate');
  const functionEnd = Date.now();
  res.status(200).send({
    initStart,
    initEnd,
    functionStart,
    functionEnd,
    requestsHandled,
    initializeTime: initEnd - initStart,
    functionTime: functionEnd - functionStart,
    alwaysOnGateValue: alwaysOnGateValue,
  });
};