@geoql/doctor-rule-core

Linter-neutral rule cores shared by:

• @geoql/oxlint-plugin-vue-doctor
• @geoql/oxlint-plugin-nuxt-doctor
• the future ESLint plugin (parity item #4)

What lives here

Pure detection logic for rules that operate on the ESTree / JavaScript AST:

• rule metadata (id, category, severity, recommended, meta)
• the visitor spec returned by create(context)
• the optional fix(node) => string | null transform
• shared helpers such as defineRule and the auto-imported symbol sets

What does NOT live here

Template-AST rules (e.g. v-for-has-key) operate on the @vue/compiler-sfc template AST, which has a completely different node shape and traversal model. They remain in @geoql/doctor-core alongside the hybrid engine that runs them.

Adapter contract

A linter adapter should consume each CoreRule and wire it into its own linter API. The core shape is intentionally identical to the ESLint / oxlint JS-plugin contract:

export interface CoreRule {
  readonly id: string;
  readonly category: RuleCategory;
  readonly severity: 'error' | 'warn' | 'info';
  readonly recommended: boolean;
  readonly meta?: RuleMeta;
  readonly create: (context: RuleContext) => Record<string, RuleVisitor>;
  readonly fix?: (node: AstNode) => string | null;
}

For oxlint, the adapter is a thin identity wrapper because the shape already matches oxlint's Rule. For ESLint, the adapter will map the same create visitor object into ESLint's context.report() API.

Adding a new rule

1. Add the rule file under src/rules/vue/ or src/rules/nuxt/.
2. Export it from the matching src/rules/vue/index.ts or src/rules/nuxt/index.ts.
3. Add the rule to RULE_REGISTRY in @geoql/doctor-core.
4. Add the rule id to the matching allowlist in @geoql/doctor-core/src/oxlint/generate-config.ts.