log.js

import { AsyncLocalStorage } from 'async_hooks'
import nanoid from 'nanoid'

export const traceIdLocalStorage = new AsyncLocalStorage()

async function addTraceIdToRequest(ctx, next) {
  const traceId = await nanoid()
  ctx.set('X-Trace-ID', traceId)
  traceIdLocalStorage.run({ traceId }, next)
}

function logMessage(message) {
  const {traceId} = traceIdLocalStorage.getStore();
  console.log(`[${traceId}] ${message}`)
}

app.use(addTraceIdToRequest)