From 13d257b905cdc8d3ac87c4944ccbbc9de95f57a3 Mon Sep 17 00:00:00 2001
From: Bilal Godil <bg2002@gmail.com>
Date: Mon, 13 Jul 2026 13:33:22 -0700
Subject: [PATCH] Preserve inherited function durations

---
 apps/backend/api/config-github-cancel.ts      |  8 ++++++++
 apps/backend/api/index.ts                     |  2 +-
 apps/backend/src/server/vercel-config.test.ts | 12 ++++++++++--
 apps/backend/vercel.json                      |  1 +
 4 files changed, 20 insertions(+), 3 deletions(-)
 create mode 100644 apps/backend/api/config-github-cancel.ts

diff --git a/apps/backend/api/config-github-cancel.ts b/apps/backend/api/config-github-cancel.ts
new file mode 100644
index 000000000..8059677c1
--- /dev/null
+++ b/apps/backend/api/config-github-cancel.ts
@@ -0,0 +1,8 @@
+import app from "../dist/vercel.mjs";
+
+export const config = {
+  runtime: "nodejs",
+  maxDuration: 60,
+};
+
+export default app;
diff --git a/apps/backend/api/index.ts b/apps/backend/api/index.ts
index 8059677c1..993b6a9c7 100644
--- a/apps/backend/api/index.ts
+++ b/apps/backend/api/index.ts
@@ -1,8 +1,8 @@
 import app from "../dist/vercel.mjs";
 
+// Preserve the project-level duration inherited by routes without a pre-Elysia override.
 export const config = {
   runtime: "nodejs",
-  maxDuration: 60,
 };
 
 export default app;
diff --git a/apps/backend/src/server/vercel-config.test.ts b/apps/backend/src/server/vercel-config.test.ts
index b83eb08b5..3e2b660e2 100644
--- a/apps/backend/src/server/vercel-config.test.ts
+++ b/apps/backend/src/server/vercel-config.test.ts
@@ -2,11 +2,13 @@ import { readFile } from "node:fs/promises";
 import { describe, expect, it } from "vitest";
 
 describe("Vercel function durations", () => {
-  it("preserves the route-specific limits from the Next.js deployment", async () => {
-    const [vercelJson, applyEntry, commitEntry] = await Promise.all([
+  it("preserves inherited and route-specific limits from the Next.js deployment", async () => {
+    const [vercelJson, defaultEntry, applyEntry, commitEntry, cancelEntry] = await Promise.all([
       readFile(new URL("../../vercel.json", import.meta.url), "utf8"),
+      readFile(new URL("../../api/index.ts", import.meta.url), "utf8"),
       readFile(new URL("../../api/config-github-apply.ts", import.meta.url), "utf8"),
       readFile(new URL("../../api/config-github-commit.ts", import.meta.url), "utf8"),
+      readFile(new URL("../../api/config-github-cancel.ts", import.meta.url), "utf8"),
     ]);
 
     expect(JSON.parse(vercelJson)).toMatchObject({
@@ -19,13 +21,19 @@ describe("Vercel function durations", () => {
           source: "/api/:version/internal/config/github/commit",
           destination: "/api/config-github-commit",
         },
+        {
+          source: "/api/:version/internal/config/github/cancel",
+          destination: "/api/config-github-cancel",
+        },
         {
           source: "/(.*)",
           destination: "/api",
         },
       ],
     });
+    expect(defaultEntry).not.toContain("maxDuration");
     expect(applyEntry).toContain("maxDuration: 800");
     expect(commitEntry).toContain("maxDuration: 120");
+    expect(cancelEntry).toContain("maxDuration: 60");
   });
 });
diff --git a/apps/backend/vercel.json b/apps/backend/vercel.json
index fb7b45f13..f12b1888e 100644
--- a/apps/backend/vercel.json
+++ b/apps/backend/vercel.json
@@ -4,6 +4,7 @@
   "rewrites": [
     { "source": "/api/:version/internal/config/github/apply", "destination": "/api/config-github-apply" },
     { "source": "/api/:version/internal/config/github/commit", "destination": "/api/config-github-commit" },
+    { "source": "/api/:version/internal/config/github/cancel", "destination": "/api/config-github-cancel" },
     { "source": "/(.*)", "destination": "/api" }
   ],
   "crons": [