From f39c37e18d7d9867c154042e5ea3bab0492cb1b1 Mon Sep 17 00:00:00 2001
From: Anna Bocharova <robin_tail@me.com>
Date: Mon, 6 May 2024 21:25:59 +0200
Subject: [PATCH] Expressing `Method` via `IRouter` (#1735)

This serves two purposes:

- Enforcing constraints on its actual usage in `walkRouting()`,
- Should ease adoption of the new `QUERY` method in the future, see:
  - https://github.com/expressjs/express/issues/5615
  - https://github.com/nodejs/node/issues/51562
---
 src/method.ts | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/method.ts b/src/method.ts
index 8d0edfe80..83ff789d9 100644
--- a/src/method.ts
+++ b/src/method.ts
@@ -1,3 +1,13 @@
-export type Method = "get" | "post" | "put" | "delete" | "patch";
-export const methods: Method[] = ["get", "post", "put", "delete", "patch"];
-export type AuxMethod = "options";
+import type { IRouter } from "express";
+
+export const methods = [
+  "get",
+  "post",
+  "put",
+  "delete",
+  "patch",
+] satisfies Array<keyof IRouter>;
+
+export type Method = (typeof methods)[number];
+
+export type AuxMethod = Extract<keyof IRouter, "options">;