From 0f8a62db4814a10cbc10b3ac2ab87285435b2a56 Mon Sep 17 00:00:00 2001
From: ai-implementer <ai-implementer@gitea-ai-sdlc.scopicdev.com>
Date: Tue, 21 Jul 2026 05:54:30 +0000
Subject: [PATCH] [QOTD-4] Configure ESLint with @typescript-eslint recommended
 rules

Add eslint.config.mjs (flat config) using @typescript-eslint/eslint-plugin
flat/recommended rules. Add npm run lint script (exits 0 on current codebase).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 CLAUDE.md         |  8 ++++----
 eslint.config.mjs | 12 ++++++++++++
 package.json      |  1 +
 3 files changed, 17 insertions(+), 4 deletions(-)
 create mode 100644 eslint.config.mjs

diff --git a/CLAUDE.md b/CLAUDE.md
index 2264f74..4a74376 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -42,8 +42,10 @@ quote-of-the-day-api/
 ├── src/               # TypeScript source
 │   └── placeholder.test.ts  # harness smoke test
 ├── dist/              # compiled output (git-ignored)
+├── eslint.config.mjs  # ESLint flat config (@typescript-eslint recommended)
 ├── package.json
 ├── package-lock.json
+├── tsconfig.json
 ├── .gitignore
 ├── README.md          # Project overview (currently a stub)
 └── CLAUDE.md          # This file
@@ -61,9 +63,7 @@ quote-of-the-day-api/
 
 ## Code Style
 
-> Update this section once a linter/formatter config is committed (`.eslintrc`, etc.).
-
-- **TypeScript**: `strict: true`, `target: "ES2020"` recommended in `tsconfig.json`
-- **Linting**: ESLint with `@typescript-eslint` rules; `npm run lint` must exit cleanly
+- **TypeScript**: `strict: true`, `target: "ES2020"` in `tsconfig.json`
+- **Linting**: ESLint 10 flat config (`eslint.config.mjs`) using `@typescript-eslint/eslint-plugin` `flat/recommended` rules; run `npm run lint` — must exit 0
 - Follow the conventions of the chosen language's ecosystem formatter (e.g., Prettier for JS/TS).
 - Keep controllers thin; put business logic in service or domain layers.
diff --git a/eslint.config.mjs b/eslint.config.mjs
new file mode 100644
index 0000000..5bda166
--- /dev/null
+++ b/eslint.config.mjs
@@ -0,0 +1,12 @@
+import tsPlugin from '@typescript-eslint/eslint-plugin';
+import tsParser from '@typescript-eslint/parser';
+
+export default [
+  ...tsPlugin.configs['flat/recommended'],
+  {
+    files: ['**/*.ts'],
+    languageOptions: {
+      parser: tsParser,
+    },
+  },
+];
diff --git a/package.json b/package.json
index 29dbab1..0095d51 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
   "scripts": {
     "build": "tsc",
     "dev": "ts-node src/index.ts",
+    "lint": "eslint src",
     "test": "vitest run",
     "test:watch": "vitest"
   },