chore: find code with high complexity (#17679)

web/eslint.config.mjs

@@ -65,8 +65,6 @@ export default combine(
   // use `ESLINT_CONFIG_INSPECTOR=true pnpx @eslint/config-inspector` to check the config
   // ...process.env.ESLINT_CONFIG_INSPECTOR
   //   ? []
-  // TODO: remove this when upgrade to nextjs 15
-  // : fixupConfigRules(compat.extends('next')),
   {
     rules: {
       // performance issue, and not used.
@@ -87,6 +85,7 @@ export default combine(
   {
     // orignal config
     rules: {
+      'complexity': ['warn', { max: 10 }],
       // orignal ts/no-var-requires
       'ts/no-require-imports': 'off',
       'no-console': 'off',