The Middleware Signature

A Volten middleware function receives two arguments: the request context (ctx) and the next function:

import type { RequestContext, Next } from "volten";

async function myMiddleware(ctx: RequestContext, next: Next): Promise<void> {
  // 1. Code executed on the way IN (downstream phase)

  await next(); // Hand over control to the next handler

  // 2. Code executed on the way OUT (upstream phase)
}

• ctx: The RequestContext instance containing request metadata, parameters, headers, and response utilities.
• next: A callback function (() => Promise<void> | void) that invokes the next middleware or terminal route handler in the chain.

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