feat: complexity

BREAKING CHANGE: add rule `complexity` and bump min eslint v9.12.0.

package.json

@@ -65,7 +65,7 @@
     "typescript-eslint": "^8.15.0"
   },
   "peerDependencies": {
-    "eslint": "^9.0.0",
+    "eslint": "^9.12.0",
     "typescript": "*"
   },
   "devDependencies": {
@@ -80,7 +80,7 @@
     "ava": "6.2.0",
     "conventional-changelog-conventionalcommits": "8.0.0",
     "eslint": "9.16.0",
-    "eslint_bottom": "npm:eslint@9.0.0",
+    "eslint_bottom": "npm:eslint@9.12.0",
     "eslint-plugin-eslint-comments_bottom": "npm:eslint-plugin-eslint-comments@3.2.0",
     "eslint-plugin-import_bottom": "npm:eslint-plugin-import@2.31.0",
     "eslint-plugin-n_bottom": "npm:eslint-plugin-n@17.0.0",

src/plugin-usage/eslint.ts

@@ -25,6 +25,14 @@ const usage: PluginUsage = {
       'as-needed',
       { requireReturnForObjectLiteral: false },
     ],
+    complexity: [
+      'error',
+      {
+        variant: 'modified',
+        // eslint-disable-next-line @typescript-eslint/no-magic-numbers -- arbitrary choice
+        max: 5,
+      },
+    ],
     'constructor-super': ['error'],
     curly: ['error', 'multi-line'],
     'default-case-last': ['error'],

src/test/_expected-exported-value.ts

@@ -47,6 +47,14 @@ export const expectedEslintRules: Record<
     'as-needed',
     { requireReturnForObjectLiteral: false },
   ],
+  complexity: [
+    'error',
+    {
+      variant: 'modified',
+      // eslint-disable-next-line @typescript-eslint/no-magic-numbers -- arbitrary choice
+      max: 5,
+    },
+  ],
   'constructor-super': ['error'],
   curly: ['error', 'multi-line'],
   'default-case-last': ['error'],

src/test/_rules_to_consider.ts

@@ -1,7 +1,6 @@
 export const rulesToConsider: Record<string, string[]> = {
   'eslint-comments': [],
   '': [
-    'complexity',
     'consistent-this',
     'default-case',
     'for-direction',