reusable asyncstore

asyncstore.ts

import { AsyncLocalStorage } from 'async_hooks';

const context = new AsyncLocalStorage;

export function getStore() {
  return context;
}

export function run(cb) {
  context.run(new Map(), cb)
}

export function set(k, v): void {
  context.getStore().set(k, v)
}

export function get(k): object {
  return context.getStore().get(k)
}

export function runWithRequest(req, res, cb) {
  run(() => {
    set('req', req)
    set('res', res)
    cb()
  })
}