@treasurenet/logging-middleware/src/requestContext.js

A lightweight Express.js middleware for structured logging, request ID tracing, and response logging with log4js.

const { AsyncLocalStorage } = require('async_hooks');
const storage = new AsyncLocalStorage();

const context = {
  run: (reqId, callback) => {
    storage.run(new Map([['reqId', reqId]]), callback);
  },
  get: (key) => {
    const store = storage.getStore();
    return store ? store.get(key) : undefined;
  },
};

module.exports = context;