add linting

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+on:
+    push:
+        branches:
+            - main
+    pull_request:
+
+concurrency:
+    group: ${{ github.workflow }}-${{ github.ref }}
+    cancel-in-progress: true
+
+jobs:
+    test:
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v4
+            - uses: actions/setup-node@v4
+              with:
+                  node-version: 18
+                  cache: npm
+
+            - run: npm ci
+            - run: npm test
+            - run: npm run lint

.prettierrc.json

@@ -0,0 +1,20 @@
+{
+    "printWidth": 140,
+    "tabWidth": 4,
+    "useTabs": false,
+    "semi": true,
+    "singleQuote": true,
+    "trailingComma": "none",
+    "bracketSpacing": true,
+    "bracketSameLine": false,
+    "proseWrap": "always",
+    "arrowParens": "avoid",
+    "overrides": [
+        {
+            "files": "**/*.md",
+            "options": {
+                "printWidth": 280
+            }
+        }
+    ]
+}

eslint.config.mjs

@@ -0,0 +1,20 @@
+// @ts-check
+
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+import eslintConfigPrettier from 'eslint-config-prettier/flat';
+
+export default tseslint.config(
+    eslint.configs.recommended,
+    ...tseslint.configs.recommended,
+    {
+        linterOptions: {
+            reportUnusedDisableDirectives: false
+        },
+        rules: {
+            '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
+            '@typescript-eslint/no-explicit-any': 'off'
+        }
+    },
+    eslintConfigPrettier
+);

package.json

@@ -1,22 +1,29 @@
 {
-  "name": "conformance",
-  "version": "1.0.0",
-  "type": "module",
-  "scripts": {
-    "start": "tsx src/runner.ts",
-    "test": "jest"
-  },
-  "devDependencies": {
-    "@jest/globals": "^29.7.0",
-    "@types/jest": "^29.5.8",
-    "jest": "^29.7.0",
-    "ts-jest": "^29.1.1",
-    "tsx": "^4.7.0",
-    "typescript": "^5.3.0"
-  },
-  "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.20.1",
-    "express": "^5.1.0",
-    "zod": "^3.25.76"
-  }
+    "name": "conformance",
+    "version": "1.0.0",
+    "type": "module",
+    "scripts": {
+        "start": "tsx src/runner.ts",
+        "test": "jest",
+        "lint": "eslint src/ && prettier --check .",
+        "lint:fix": "eslint src/ --fix && prettier --write ."
+    },
+    "devDependencies": {
+        "@eslint/js": "^9.8.0",
+        "@jest/globals": "^29.7.0",
+        "@types/jest": "^29.5.8",
+        "eslint": "^9.8.0",
+        "eslint-config-prettier": "^10.1.8",
+        "jest": "^29.7.0",
+        "prettier": "3.6.2",
+        "ts-jest": "^29.1.1",
+        "tsx": "^4.7.0",
+        "typescript": "^5.5.4",
+        "typescript-eslint": "^8.0.0"
+    },
+    "dependencies": {
+        "@modelcontextprotocol/sdk": "^1.20.1",
+        "express": "^5.1.0",
+        "zod": "^3.25.76"
+    }
 }

tsconfig.json

@@ -1,13 +1,13 @@
 {
-  "compilerOptions": {
-    "target": "ES2020",
-    "module": "ES2020",
-    "moduleResolution": "node",
-    "strict": true,
-    "esModuleInterop": true,
-    "skipLibCheck": true,
-    "forceConsistentCasingInFileNames": true
-  },
-  "include": ["src/**/*"],
-  "exclude": ["node_modules"]
+    "compilerOptions": {
+        "target": "ES2020",
+        "module": "ES2020",
+        "moduleResolution": "node",
+        "strict": true,
+        "esModuleInterop": true,
+        "skipLibCheck": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "include": ["src/**/*"],
+    "exclude": ["node_modules"]
 }