Symbol?

symbol.js

// router.js
app.get('/', (req, res) => {
  // generate rewuest uuid
  // assign it to something (?)
  // kick in some app logic
});

// db.js
async function getAfromB() {
  const result = await driver.oneOrNone('SELECT a FROM b');
  logger.log(`db time elapsed: ${duration}`);
}

// external_api.js
async function callExternalProc() {
  const result = await request(....);
  logger.log(`api time elapsed: ${duration}`);
}

// logger.js
functin log(str) {
  console.log(`UUID: ${REQUEST_UUID}, ${str}`)ж
}