{
  "context": "Evaluates whether the solution builds and uses an ESLint flat config around eslint-plugin-regexp to optimize lookarounds and quantifiers. Checks focus on enabling the correct plugin rules, honoring severity controls, and running linting through ESLint rather than custom regex parsing.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Plugin base",
      "description": "Config composes the plugin's recommended preset (e.g., regexp.configs['flat/recommended'] or plugin:regexp/recommended) with the regexp plugin registered so regex rules can run.",
      "max_score": 20
    },
    {
      "name": "Nested lookaround check",
      "description": "Config enables regexp/no-extra-lookaround-assertions (or equivalent nested-lookaround detector) at the specified severity and lint results surface its ruleId when nested lookarounds appear.",
      "max_score": 25
    },
    {
      "name": "Quantifier merge check",
      "description": "Config enables regexp/optimal-quantifier-concatenation to flag adjacent quantifiers on the same token and exposes the rule's autofix suggestion in lint output.",
      "max_score": 25
    },
    {
      "name": "ESLint runner",
      "description": "Linting uses the ESLint API (e.g., the ESLint class with lintText) with the plugin config applied instead of custom regex parsing, and returns ruleIds/locations from plugin violations.",
      "max_score": 15
    },
    {
      "name": "Severity overrides",
      "description": "Provided options map directly to rule levels (off/warn/error) for both regexp/no-extra-lookaround-assertions and regexp/optimal-quantifier-concatenation when building the config and running linting.",
      "max_score": 15
    }
  ]
}