feat(linter): support eslint config in nextjs eslint (#2107)

related: https://github.com/oxc-project/oxc/issues/1929

Support Next.js eslint config settings.
- [custom settings
](https://nextjs.org/docs/app/building-your-application/configuring/eslint#custom-settings)
- also handle Next.js eslint rule name mapping

these are need before implementing [this
rule](https://nextjs.org/docs/messages/no-html-link-for-pages)

crates/oxc_linter/src/config/mod.rs

@@ -5,7 +5,7 @@ use oxc_diagnostics::{Error, FailedToOpenFileError, Report};
 use rustc_hash::{FxHashMap, FxHashSet};
 use serde_json::Value;
 
-use crate::{rules::RuleEnum, AllowWarnDeny, JsxA11y, LintSettings};
+use crate::{rules::RuleEnum, settings::Nextjs, AllowWarnDeny, JsxA11y, LintSettings};
 
 use self::errors::{
     FailedToParseConfigError, FailedToParseConfigJsonError, FailedToParseRuleValueError,
@@ -167,9 +167,9 @@ fn parse_settings_from_root(root_json: &Value) -> LintSettings {
 
 pub fn parse_settings(setting_value: &Value) -> LintSettings {
     if let Value::Object(settings_object) = setting_value {
+        let mut jsx_a11y_setting = JsxA11y::new(None, FxHashMap::default());
+        let mut nextjs_setting = Nextjs::new(vec![]);
         if let Some(Value::Object(jsx_a11y)) = settings_object.get("jsx-a11y") {
-            let mut jsx_a11y_setting = JsxA11y::new(None, FxHashMap::default());
-
             if let Some(Value::Object(components)) = jsx_a11y.get("components") {
                 let components_map: FxHashMap<String, String> = components
                     .iter()
@@ -184,9 +184,20 @@ pub fn parse_settings(setting_value: &Value) -> LintSettings {
                 jsx_a11y_setting
                     .set_polymorphic_prop_name(Some(String::from(polymorphic_prop_name)));
             }
-
-            return LintSettings::new(jsx_a11y_setting);
         }
+
+        if let Some(Value::Object(nextjs)) = settings_object.get("next") {
+            if let Some(Value::String(root_dir)) = nextjs.get("rootDir") {
+                nextjs_setting.set_root_dir(vec![String::from(root_dir)]);
+            }
+            if let Some(Value::Array(root_dir)) = nextjs.get("rootDir") {
+                nextjs_setting.set_root_dir(
+                    root_dir.iter().map(|v| v.as_str().unwrap().to_string()).collect(),
+                );
+            }
+        }
+
+        return LintSettings::new(jsx_a11y_setting, nextjs_setting);
     }
 
     LintSettings::default()
@@ -201,9 +212,13 @@ fn parse_rule_name(name: &str) -> (&str, &str) {
             "typescript-eslint" => "typescript",
             // plugin name in RuleEnum is in snake_case
             "jsx-a11y" => "jsx_a11y",
+            "next" => "nextjs",
             _ => category,
         };
 
+        // since next.js eslint rule starts with @next/next/
+        let name = name.trim_start_matches("next/");
+
         (category, name)
     } else {
         ("eslint", name)

crates/oxc_linter/src/settings.rs

@@ -4,17 +4,21 @@ use rustc_hash::FxHashMap;
 #[derive(Debug, Clone)]
 pub struct LintSettings {
     pub jsx_a11y: JsxA11y,
+    pub nextjs: Nextjs,
 }
 
 impl Default for LintSettings {
     fn default() -> Self {
-        Self { jsx_a11y: JsxA11y { polymorphic_prop_name: None, components: FxHashMap::default() } }
+        Self {
+            jsx_a11y: JsxA11y { polymorphic_prop_name: None, components: FxHashMap::default() },
+            nextjs: Nextjs { root_dir: vec![] },
+        }
     }
 }
 
 impl LintSettings {
-    pub fn new(jsx_a11y: JsxA11y) -> Self {
+    pub fn new(jsx_a11y: JsxA11y, nextjs: Nextjs) -> Self {
-        Self { jsx_a11y }
+        Self { jsx_a11y, nextjs }
     }
 }
 
@@ -40,3 +44,18 @@ impl JsxA11y {
         self.polymorphic_prop_name = name;
     }
 }
+
+#[derive(Debug, Clone)]
+pub struct Nextjs {
+    pub root_dir: Vec<String>,
+}
+
+impl Nextjs {
+    pub fn new(root_dir: Vec<String>) -> Self {
+        Self { root_dir }
+    }
+
+    pub fn set_root_dir(&mut self, root_dir: Vec<String>) {
+        self.root_dir = root_dir;
+    }
+}

crates/oxc_linter/src/utils/react.rs

@@ -224,7 +224,7 @@ pub fn get_element_type(context: &LintContext, element: &JSXOpeningElement) -> O
         return None;
     };
 
-    let LintSettings { jsx_a11y } = context.settings();
+    let LintSettings { jsx_a11y, .. } = context.settings();
     let JsxA11y { polymorphic_prop_name, components } = jsx_a11y;
 
     if let Some(polymorphic_prop_name_value) = polymorphic_prop_name {