@types/on-headers

Installation

npm install --save @types/on-headers

Summary

This package contains type definitions for on-headers (https://github.com/jshttp/on-headers).

Details

Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/on-headers.

index.d.ts

/// <reference types="node" />

import { ServerResponse } from "http";

/**
 * This will add the listener to fire when headers are emitted for res.
 * The listener is passed the response object as its context (this).
 * Headers are considered emitted only once, right before they
 * are sent to the client.
 *
 * When this is called multiple times on the same res, the listeners
 * are fired in the reverse order they were added.
 *
 * @param res HTTP server response object
 * @param listener Function to call prior to headers being emitted,
 *        the response object is passed as this context.
 */
declare function onHeaders(res: ServerResponse, listener: (this: ServerResponse) => void): void;

export = onHeaders;

Additional Details

• Last updated: Sat, 07 Jun 2025 0225 GMT
• Dependencies: @types/node

Credits

These definitions were written by John Jeffery, BendingBender, and Sebastian Beltran.