Modernize to 2025 standards with TDD, comprehensive testing, and antcolony conventions

.gitignore

@@ -1,3 +1,6 @@
 node_modules
 .env
-types
+types
+# Coverage reports
+coverage/
+*.lcov

README.md

@@ -92,7 +92,7 @@ const app = new Koa().use(bodyParser()).use(
     rootValue: {},
     buildContext: async ctx => {},
     formatError: error => error,
-  })
+  }),
 )
 
 app.listen(3000)

eslint.config.js

@@ -0,0 +1,59 @@
+import js from '@eslint/js'
+import prettier from 'eslint-config-prettier'
+
+export default [
+  js.configs.recommended,
+  prettier,
+  {
+    languageOptions: {
+      ecmaVersion: 'latest',
+      sourceType: 'module',
+      globals: {
+        console: 'readonly',
+        process: 'readonly',
+        Buffer: 'readonly',
+        __dirname: 'readonly',
+        __filename: 'readonly',
+        global: 'readonly',
+        setTimeout: 'readonly',
+        setInterval: 'readonly',
+        setImmediate: 'readonly',
+        clearTimeout: 'readonly',
+        clearInterval: 'readonly',
+        clearImmediate: 'readonly',
+        fetch: 'readonly',
+      },
+    },
+    rules: {
+      // Allow snake_case (disable camelcase enforcement)
+      camelcase: 'off',
+      // Modern JS best practices
+      'no-var': 'error',
+      'object-shorthand': 'error',
+      'prefer-const': ['error', { destructuring: 'any' }],
+      'prefer-rest-params': 'error',
+      'prefer-spread': 'error',
+      'prefer-object-spread': 'error',
+      'prefer-destructuring': 'error',
+      'prefer-numeric-literals': 'error',
+      'no-throw-literal': 'off',
+      // Allow unused vars in function signatures (common pattern)
+      'no-unused-vars': [
+        'error',
+        {
+          argsIgnorePattern: '^_',
+          varsIgnorePattern: '^_',
+        },
+      ],
+    },
+  },
+  {
+    ignores: [
+      'node_modules/**',
+      'coverage/**',
+      'dist/**',
+      'types/**',
+      '*.config.js',
+    ],
+  },
+]