@types/cls-hooked

Creating a Namespace

This feature allows you to create a new namespace. A namespace is a context that can be used to store and retrieve data across asynchronous calls.

const cls = require('cls-hooked');
const namespace = cls.createNamespace('myNamespace');

Setting and Getting Context

Within a namespace, you can set and get values that will be available throughout the lifecycle of the asynchronous operations.

namespace.run(() => {
  namespace.set('key', 'value');
  console.log(namespace.get('key')); // Outputs: value
});

Binding Functions to a Namespace

You can bind functions to a namespace so that they have access to the context set within that namespace.

const boundFunction = namespace.bind(() => {
  console.log(namespace.get('key'));
});
namespace.run(() => {
  namespace.set('key', 'value');
  boundFunction(); // Outputs: value
});