From d143f54c186f95499a320ee94b705981ffccb5ce Mon Sep 17 00:00:00 2001
From: William Zujkowski <williamzujkowski@gmail.com>
Date: Mon, 15 Jun 2026 23:33:44 -0400
Subject: [PATCH] fix: typecheck the contract test file
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tsconfig.json excludes **/*.test.ts so `tsc --noEmit` only checked
schemas.ts, never schemas.test.ts — the repo's entire deliverable. A
type-level drift in how the test consumes the schemas (the exact failure
this repo exists to surface) passed the typecheck gate clean.

Add tsconfig.test.json (extends base, noEmit, declaration off,
re-includes test files) and run it as a second step in the `typecheck`
script. `build` still uses tsconfig.json, so dist/ contains only
schemas.js/.d.ts — no test declarations emitted.

Verified: a deliberate type error in schemas.test.ts now fails
`npm run typecheck`, and the full sequence (typecheck/test/build) is green.

Fixes #6

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 package.json       |  2 +-
 tsconfig.test.json | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 tsconfig.test.json

diff --git a/package.json b/package.json
index f868824..b4a9073 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   "scripts": {
     "build": "tsc",
     "test": "vitest run",
-    "typecheck": "tsc --noEmit"
+    "typecheck": "tsc --noEmit && tsc -p tsconfig.test.json"
   },
   "devDependencies": {
     "@types/node": "^22.0.0",
diff --git a/tsconfig.test.json b/tsconfig.test.json
new file mode 100644
index 0000000..2b538dd
--- /dev/null
+++ b/tsconfig.test.json
@@ -0,0 +1,13 @@
+{
+  // Type-check the test files too. The base tsconfig.json excludes
+  // **/*.test.ts so `build` (tsc emit) never writes test declarations into
+  // dist/; this config re-includes them under --noEmit so `typecheck` actually
+  // verifies the contract test — the repo's whole deliverable.
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "noEmit": true,
+    "declaration": false
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}