feat: ci complexity linters (#236)

apps/web/eslint.config.mjs

@@ -1,6 +1,8 @@
 import { defineConfig, globalIgnores } from "eslint/config";
 import nextVitals from "eslint-config-next/core-web-vitals";
 import nextTs from "eslint-config-next/typescript";
+import sonarjs from "eslint-plugin-sonarjs";
+import unusedImports from "eslint-plugin-unused-imports";
 
 const eslintConfig = defineConfig([
   ...nextVitals,
@@ -13,6 +15,24 @@ const eslintConfig = defineConfig([
     "build/**",
     "next-env.d.ts",
   ]),
+  {
+    plugins: {
+      sonarjs,
+      "unused-imports": unusedImports,
+    },
+    rules: {
+      "max-lines": ["warn", { max: 600, skipBlankLines: true, skipComments: true }],
+      "max-lines-per-function": ["warn", { max: 100, skipBlankLines: true, skipComments: true }],
+      "complexity": ["warn", 15],
+      "max-depth": ["warn", 4],
+      "max-params": ["warn", 5],
+      "no-nested-ternary": "warn",
+      "sonarjs/cognitive-complexity": ["warn", 20],
+      "sonarjs/no-duplicate-string": ["warn", { threshold: 4 }],
+      "sonarjs/no-identical-functions": "warn",
+      "unused-imports/no-unused-imports": "warn",
+    },
+  },
 ]);
 
 export default eslintConfig;