Skip to main content
HookCallbacks.before - async_hooks - Node documentation
method HookCallbacks.before

Usage in Deno

import { type HookCallbacks } from "node:async_hooks";
HookCallbacks.before(asyncId: number): void

When an asynchronous operation is initiated or completes a callback is called to notify the user. The before callback is called just before said callback is executed.

Parameters

asyncId: number

the unique identifier assigned to the resource about to execute the callback.

Return Type

void