Usage in Deno
import * as mod from "node:async_hooks";
We strongly discourage the use of the async_hooks API.
Other APIs that can cover most of its use cases include:
AsyncLocalStoragetracks async contextprocess.getActiveResourcesInfo()tracks active resources
The node:async_hooks module provides an API to track asynchronous resources.
It can be accessed using:
import async_hooks from 'node:async_hooks';
The class AsyncResource is designed to be extended by the embedder's asyncresources. Using this, users can easily trigger the lifetime events of theirown resources.
Registers functions to be called for different lifetime events of each asyncoperation.
The ID returned from executionAsyncId() is related to execution timing, notcausality (which is covered by triggerAsyncId()):
Resource objects returned by executionAsyncResource() are most often internalNode.js handle objects with undocumented APIs. Using any functions or propertieson the object is likely to crash your application and should be avoided.
Promise contexts may not get valid triggerAsyncIds by default. Seethe section on promise execution tracking.