zfine87/node-zone-ts

minimal Zone implementation for Node

minimal Zone implementation for Node

This implementation is based on the experimental AsyncWrap API, but it seems to work fine.

Work with any asynchronous tasks (IO, timers, promises, external modules, …).

Install

Installation of the npm package:

> npm install --save node-zone

Usage

import { current } from 'node-zone'

// a zone has a name, a parent, and data
console.log(
  current.name,   // "<root>"
  current.parent, // null
  current.data    // { __proto__: null }
)

// create a new child zone
const myZone = current.fork('my zone')

console.log(
  myZone.name,   // "my zone"
  myZone.parent, // current
  myZone.data    // { __proto__: current.data }
)

// run some code in it
myZone.run(() => {
  console.log(current.name) // "my zone"

  // zone is preserved in async functions
  process.nextTick(() => {
    console.log(current.name) // "my zone"
  })
})

console.log(current.name) // "<root>"