refactor(linter): start internal/external split of OxlintConfig (#5595)

Re-creation of #5140

crates/oxc_linter/src/config/mod.rs

@@ -57,7 +57,16 @@ use crate::{
 #[serde(default)]
 pub struct OxlintConfig {
     /// See [Oxlint Rules](https://oxc.rs/docs/guide/usage/linter/rules.html).
-    pub(crate) rules: OxlintRules,
+    pub rules: OxlintRules,
+    pub settings: OxlintSettings,
+    /// Environments enable and disable collections of global variables.
+    pub env: OxlintEnv,
+    /// Enabled or disabled specific global variables.
+    pub globals: OxlintGlobals,
+}
+
+#[derive(Debug, Default)]
+pub(crate) struct LintConfig {
     pub(crate) settings: OxlintSettings,
     /// Environments enable and disable collections of global variables.
     pub(crate) env: OxlintEnv,
@@ -65,6 +74,12 @@ pub struct OxlintConfig {
     pub(crate) globals: OxlintGlobals,
 }
 
+impl From<OxlintConfig> for LintConfig {
+    fn from(config: OxlintConfig) -> Self {
+        Self { settings: config.settings, env: config.env, globals: config.globals }
+    }
+}
+
 impl OxlintConfig {
     /// # Errors
     ///

crates/oxc_linter/src/context.rs

@@ -10,11 +10,11 @@ use oxc_syntax::module_record::ModuleRecord;
 #[cfg(debug_assertions)]
 use crate::rule::RuleFixMeta;
 use crate::{
-    config::OxlintRules,
+    config::LintConfig,
     disable_directives::{DisableDirectives, DisableDirectivesBuilder},
     fixer::{FixKind, Message, RuleFix, RuleFixer},
     javascript_globals::GLOBALS,
-    AllowWarnDeny, FrameworkFlags, OxlintConfig, OxlintEnv, OxlintGlobals, OxlintSettings,
+    AllowWarnDeny, FrameworkFlags, OxlintEnv, OxlintGlobals, OxlintSettings,
 };
 
 #[derive(Clone)]
@@ -38,7 +38,7 @@ pub struct LintContext<'a> {
 
     file_path: Rc<Path>,
 
-    eslint_config: Arc<OxlintConfig>,
+    config: Arc<LintConfig>,
 
     // states
     current_plugin_name: &'static str,
@@ -83,7 +83,7 @@ impl<'a> LintContext<'a> {
             disable_directives: Rc::new(disable_directives),
             fix: FixKind::None,
             file_path: file_path.into(),
-            eslint_config: Arc::new(OxlintConfig::default()),
+            config: Arc::new(LintConfig::default()),
             current_plugin_name: "eslint",
             current_plugin_prefix: "eslint",
             current_rule_name: "",
@@ -100,8 +100,8 @@ impl<'a> LintContext<'a> {
         self
     }
 
-    pub fn with_eslint_config(mut self, eslint_config: &Arc<OxlintConfig>) -> Self {
-        self.eslint_config = Arc::clone(eslint_config);
+    pub(crate) fn with_config(mut self, config: &Arc<LintConfig>) -> Self {
+        self.config = Arc::clone(config);
         self
     }
 
@@ -176,22 +176,18 @@ impl<'a> LintContext<'a> {
 
     /// Plugin settings
     pub fn settings(&self) -> &OxlintSettings {
-        &self.eslint_config.settings
+        &self.config.settings
     }
 
     pub fn globals(&self) -> &OxlintGlobals {
-        &self.eslint_config.globals
+        &self.config.globals
     }
 
     /// Runtime environments turned on/off by the user.
     ///
     /// Examples of environments are `builtin`, `browser`, `node`, etc.
     pub fn env(&self) -> &OxlintEnv {
-        &self.eslint_config.env
-    }
-
-    pub fn rules(&self) -> &OxlintRules {
-        &self.eslint_config.rules
+        &self.config.env
     }
 
     pub fn env_contains_var(&self, var: &str) -> bool {

crates/oxc_linter/src/lib.rs

@@ -22,6 +22,7 @@ pub mod table;
 
 use std::{io::Write, path::Path, rc::Rc, sync::Arc};
 
+use config::LintConfig;
 use oxc_diagnostics::Error;
 use oxc_semantic::{AstNode, Semantic};
 
@@ -54,7 +55,7 @@ fn size_asserts() {
 pub struct Linter {
     rules: Vec<RuleWithSeverity>,
     options: LintOptions,
-    eslint_config: Arc<OxlintConfig>,
+    config: Arc<LintConfig>,
 }
 
 impl Default for Linter {
@@ -68,8 +69,8 @@ impl Linter {
     ///
     /// Returns `Err` if there are any errors parsing the configuration file.
     pub fn from_options(options: LintOptions) -> Result<Self, Error> {
-        let (rules, eslint_config) = options.derive_rules_and_config()?;
-        Ok(Self { rules, options, eslint_config: Arc::new(eslint_config) })
+        let (rules, config) = options.derive_rules_and_config()?;
+        Ok(Self { rules, options, config: Arc::new(config) })
     }
 
     #[cfg(test)]
@@ -79,9 +80,11 @@ impl Linter {
         self
     }
 
+    /// Used for testing
+    #[cfg(test)]
     #[must_use]
-    pub fn with_eslint_config(mut self, eslint_config: OxlintConfig) -> Self {
-        self.eslint_config = Arc::new(eslint_config);
+    pub(crate) fn with_eslint_config(mut self, config: LintConfig) -> Self {
+        self.config = Arc::new(config);
         self
     }
 
@@ -153,7 +156,7 @@ impl Linter {
     fn create_ctx<'a>(&self, path: &Path, semantic: Rc<Semantic<'a>>) -> LintContext<'a> {
         let mut ctx = LintContext::new(path.to_path_buf().into_boxed_path(), semantic)
             .with_fix(self.options.fix)
-            .with_eslint_config(&self.eslint_config)
+            .with_config(&self.config)
             .with_frameworks(self.options.framework_hints);
 
         // set file-specific jest/vitest flags

crates/oxc_linter/src/options/mod.rs

@@ -9,7 +9,10 @@ pub use plugins::LintPluginOptions;
 use rustc_hash::FxHashSet;
 
 use crate::{
-    config::OxlintConfig, fixer::FixKind, rules::RULES, utils::is_jest_rule_adapted_to_vitest,
+    config::{LintConfig, OxlintConfig},
+    fixer::FixKind,
+    rules::RULES,
+    utils::is_jest_rule_adapted_to_vitest,
     FrameworkFlags, RuleCategory, RuleEnum, RuleWithSeverity,
 };
 
@@ -155,7 +158,9 @@ impl LintOptions {
     /// # Errors
     ///
     /// * Returns `Err` if there are any errors parsing the configuration file.
-    pub fn derive_rules_and_config(&self) -> Result<(Vec<RuleWithSeverity>, OxlintConfig), Error> {
+    pub(crate) fn derive_rules_and_config(
+        &self,
+    ) -> Result<(Vec<RuleWithSeverity>, LintConfig), Error> {
         let config =
             self.config_path.as_ref().map(|path| OxlintConfig::from_file(path)).transpose()?;
 
@@ -216,7 +221,7 @@ impl LintOptions {
         // for stable diagnostics output ordering
         rules.sort_unstable_by_key(|rule| rule.id());
 
-        Ok((rules, config.unwrap_or_default()))
+        Ok((rules, config.map(Into::into).unwrap_or_default()))
     }
 
     /// Get final filtered rules by reading `self.xxx_plugin`

crates/oxc_linter/src/tester.rs

@@ -364,7 +364,7 @@ impl Tester {
         let linter = Linter::from_options(options)
             .unwrap()
             .with_rules(vec![RuleWithSeverity::new(rule, AllowWarnDeny::Warn)])
-            .with_eslint_config(eslint_config);
+            .with_eslint_config(eslint_config.into());
         let path_to_lint = if self.plugins.import {
             assert!(path.is_none(), "import plugin does not support path");
             self.current_working_directory.join(&self.rule_path)