From c633ca3f3f233781f11049898d9da238c1bca740 Mon Sep 17 00:00:00 2001
From: Sofiane <gamween@gmail.com>
Date: Wed, 17 Jun 2026 00:42:51 +0200
Subject: [PATCH] fix(api): make the relayer typecheck under Vercel's function
 build
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Vercel's @vercel/node type-checks api/onboard.ts by discovering the nearest
tsconfig from the function dir (ts.findConfigFile). The repo only had a
non-standard site/tsconfig.api.json, never read by Vercel, so the function was
checked with the app-style resolution (no node types) — surfacing 8 errors:
  - 5x 'Cannot find name process' (types field excluded @types/node)
  - viem overload unions degraded (abi: any -> readContract wanted
    authorizationList, sendTransaction wanted kzg)
These were non-fatal (deploy still succeeded) but dirtied the build.

Fix: move the api tsconfig to site/api/tsconfig.json (the location @vercel/node
discovers) and add an idiomatic /// <reference types=node /> to the function.
Under this config viem's abitype resolves -> typed abi -> correct overloads.

Verified: tsc auto-discovery from api/ is clean; typecheck:api, lint, build all green.
---
 site/api/onboard.ts                           | 1 +
 site/{tsconfig.api.json => api/tsconfig.json} | 2 +-
 site/package.json                             | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)
 rename site/{tsconfig.api.json => api/tsconfig.json} (92%)

diff --git a/site/api/onboard.ts b/site/api/onboard.ts
index dd11cc0..e833785 100644
--- a/site/api/onboard.ts
+++ b/site/api/onboard.ts
@@ -1,3 +1,4 @@
+/// <reference types="node" />
 import type { VercelRequest, VercelResponse } from "@vercel/node";
 import {
   createPublicClient,
diff --git a/site/tsconfig.api.json b/site/api/tsconfig.json
similarity index 92%
rename from site/tsconfig.api.json
rename to site/api/tsconfig.json
index a9842a1..8b5388f 100644
--- a/site/tsconfig.api.json
+++ b/site/api/tsconfig.json
@@ -11,5 +11,5 @@
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true
   },
-  "include": ["api"]
+  "include": ["**/*.ts"]
 }
diff --git a/site/package.json b/site/package.json
index cc7e799..cda7f60 100644
--- a/site/package.json
+++ b/site/package.json
@@ -6,7 +6,7 @@
   "scripts": {
     "dev": "vite",
     "build": "tsc -b && vite build",
-    "typecheck:api": "tsc -p tsconfig.api.json",
+    "typecheck:api": "tsc -p api/tsconfig.json",
     "lint": "eslint .",
     "preview": "vite preview"
   },