chore(language_server): split options for linting and formatting

Sysix · Sysix · commit e1fe3b51c60b · 2025-09-10T00:58:10.000+02:00
diff --git a/crates/oxc_language_server/src/formatter/mod.rs b/crates/oxc_language_server/src/formatter/mod.rs
@@ -0,0 +1 @@
+pub mod options;
diff --git a/crates/oxc_language_server/src/formatter/options.rs b/crates/oxc_language_server/src/formatter/options.rs
@@ -0,0 +1,5 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Default, Serialize, Deserialize, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct FormatOptions;
diff --git a/crates/oxc_language_server/src/linter/mod.rs b/crates/oxc_language_server/src/linter/mod.rs
@@ -1,5 +1,6 @@
 pub mod config_walker;
 pub mod error_with_position;
 pub mod isolated_lint_handler;
+pub mod options;
 pub mod server_linter;
 pub mod tsgo_linter;
diff --git a/crates/oxc_language_server/src/linter/options.rs b/crates/oxc_language_server/src/linter/options.rs
@@ -0,0 +1,201 @@
+use log::info;
+use rustc_hash::{FxBuildHasher, FxHashMap};
+use serde::{Deserialize, Deserializer, Serialize, de::Error};
+use serde_json::Value;
+
+use oxc_linter::FixKind;
+
+#[derive(Debug, Serialize, Deserialize, Default, PartialEq, Eq, Clone, Copy)]
+#[serde(rename_all = "camelCase")]
+pub enum UnusedDisableDirectives {
+    #[default]
+    Allow,
+    Warn,
+    Deny,
+}
+
+#[derive(Debug, Serialize, Deserialize, Default, PartialEq, Eq, Clone, Copy)]
+#[serde(rename_all = "camelCase")]
+pub enum Run {
+    OnSave,
+    #[default]
+    OnType,
+}
+
+#[derive(Debug, Default, Serialize, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct LintOptions {
+    pub run: Run, // ToDo: the client wants maybe only the formatter, make it optional
+    pub config_path: Option<String>,
+    pub ts_config_path: Option<String>,
+    pub unused_disable_directives: UnusedDisableDirectives,
+    pub type_aware: bool,
+    pub flags: FxHashMap<String, String>,
+}
+
+impl LintOptions {
+    pub fn use_nested_configs(&self) -> bool {
+        !self.flags.contains_key("disable_nested_config") && self.config_path.is_none()
+    }
+
+    pub fn fix_kind(&self) -> FixKind {
+        self.flags.get("fix_kind").map_or(FixKind::SafeFix, |kind| match kind.as_str() {
+            "safe_fix" => FixKind::SafeFix,
+            "safe_fix_or_suggestion" => FixKind::SafeFixOrSuggestion,
+            "dangerous_fix" => FixKind::DangerousFix,
+            "dangerous_fix_or_suggestion" => FixKind::DangerousFixOrSuggestion,
+            "none" => FixKind::None,
+            "all" => FixKind::All,
+            _ => {
+                info!("invalid fix_kind flag `{kind}`, fallback to `safe_fix`");
+                FixKind::SafeFix
+            }
+        })
+    }
+}
+
+impl<'de> Deserialize<'de> for LintOptions {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let value = Value::deserialize(deserializer)?;
+        LintOptions::try_from(value).map_err(Error::custom)
+    }
+}
+
+impl TryFrom<Value> for LintOptions {
+    type Error = String;
+
+    fn try_from(value: Value) -> Result<Self, Self::Error> {
+        let Some(object) = value.as_object() else {
+            return Err("no object passed".to_string());
+        };
+
+        let mut flags = FxHashMap::with_capacity_and_hasher(2, FxBuildHasher);
+        if let Some(json_flags) = object.get("flags").and_then(|value| value.as_object()) {
+            if let Some(disable_nested_config) =
+                json_flags.get("disable_nested_config").and_then(|value| value.as_str())
+            {
+                flags
+                    .insert("disable_nested_config".to_string(), disable_nested_config.to_string());
+            }
+
+            if let Some(fix_kind) = json_flags.get("fix_kind").and_then(|value| value.as_str()) {
+                flags.insert("fix_kind".to_string(), fix_kind.to_string());
+            }
+        }
+
+        Ok(Self {
+            run: object
+                .get("run")
+                .map(|run| serde_json::from_value::<Run>(run.clone()).unwrap_or_default())
+                .unwrap_or_default(),
+            unused_disable_directives: object
+                .get("unusedDisableDirectives")
+                .map(|key| {
+                    serde_json::from_value::<UnusedDisableDirectives>(key.clone())
+                        .unwrap_or_default()
+                })
+                .unwrap_or_default(),
+            config_path: object
+                .get("configPath")
+                .and_then(|config_path| serde_json::from_value::<String>(config_path.clone()).ok()),
+            ts_config_path: object
+                .get("tsConfigPath")
+                .and_then(|config_path| serde_json::from_value::<String>(config_path.clone()).ok()),
+            type_aware: object
+                .get("typeAware")
+                .is_some_and(|key| serde_json::from_value::<bool>(key.clone()).unwrap_or_default()),
+            flags,
+        })
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use rustc_hash::FxHashMap;
+    use serde_json::json;
+
+    use super::{LintOptions, Run, UnusedDisableDirectives};
+
+    #[test]
+    fn test_valid_options_json() {
+        let json = json!({
+            "run": "onSave",
+            "configPath": "./custom.json",
+            "unusedDisableDirectives": "warn",
+            "typeAware": true,
+            "flags": {
+                "disable_nested_config": "true",
+                "fix_kind": "dangerous_fix"
+            },
+        });
+
+        let options = LintOptions::try_from(json).unwrap();
+        assert_eq!(options.run, Run::OnSave);
+        assert_eq!(options.config_path, Some("./custom.json".into()));
+        assert_eq!(options.unused_disable_directives, UnusedDisableDirectives::Warn);
+        assert!(options.type_aware);
+        assert_eq!(options.flags.get("disable_nested_config"), Some(&"true".to_string()));
+        assert_eq!(options.flags.get("fix_kind"), Some(&"dangerous_fix".to_string()));
+    }
+
+    #[test]
+    fn test_empty_options_json() {
+        let json = json!({});
+
+        let options = LintOptions::try_from(json).unwrap();
+        assert_eq!(options.run, Run::OnType);
+        assert_eq!(options.config_path, None);
+        assert_eq!(options.unused_disable_directives, UnusedDisableDirectives::Allow);
+        assert!(!options.type_aware);
+        assert!(options.flags.is_empty());
+    }
+
+    #[test]
+    fn test_invalid_options_json() {
+        let json = json!({
+            "run": true,
+            "configPath": "./custom.json"
+        });
+
+        let options = LintOptions::try_from(json).unwrap();
+        assert_eq!(options.run, Run::OnType); // fallback
+        assert_eq!(options.config_path, Some("./custom.json".into()));
+        assert!(options.flags.is_empty());
+    }
+
+    #[test]
+    fn test_invalid_flags_options_json() {
+        let json = json!({
+            "configPath": "./custom.json",
+            "flags": {
+                "disable_nested_config": true, // should be string
+                "fix_kind": "dangerous_fix"
+            }
+        });
+
+        let options = LintOptions::try_from(json).unwrap();
+        assert_eq!(options.run, Run::OnType); // fallback
+        assert_eq!(options.config_path, Some("./custom.json".into()));
+        assert_eq!(options.flags.get("disable_nested_config"), None);
+        assert_eq!(options.flags.get("fix_kind"), Some(&"dangerous_fix".to_string()));
+    }
+
+    #[test]
+    fn test_use_nested_configs() {
+        let options = LintOptions::default();
+        assert!(options.use_nested_configs());
+
+        let options =
+            LintOptions { config_path: Some("config.json".to_string()), ..Default::default() };
+        assert!(!options.use_nested_configs());
+
+        let mut flags = FxHashMap::default();
+        flags.insert("disable_nested_config".to_string(), "true".to_string());
+
+        let options = LintOptions { flags, ..Default::default() };
+        assert!(!options.use_nested_configs());
+    }
+}
diff --git a/crates/oxc_language_server/src/linter/server_linter.rs b/crates/oxc_language_server/src/linter/server_linter.rs
@@ -18,10 +18,10 @@ use tower_lsp_server::UriExt;
 use crate::linter::{
     error_with_position::DiagnosticReport,
     isolated_lint_handler::{IsolatedLintHandler, IsolatedLintHandlerOptions},
+    options::{LintOptions as LSPLintOptions, Run, UnusedDisableDirectives},
     tsgo_linter::TsgoLinter,
 };
-use crate::options::{Run, UnusedDisableDirectives};
-use crate::{ConcurrentHashMap, OXC_CONFIG_FILE, Options};
+use crate::{ConcurrentHashMap, OXC_CONFIG_FILE};
 
 use super::config_walker::ConfigWalker;
 
@@ -80,7 +80,7 @@ impl ServerLinterDiagnostics {
 }
 
 impl ServerLinter {
-    pub fn new(root_uri: &Uri, options: &Options) -> Self {
+    pub fn new(root_uri: &Uri, options: &LSPLintOptions) -> Self {
         let root_path = root_uri.to_file_path().unwrap();
         let mut nested_ignore_patterns = Vec::new();
         let (nested_configs, mut extended_paths) =
@@ -186,7 +186,7 @@ impl ServerLinter {
     /// and insert them inside the nested configuration
     fn create_nested_configs(
         root_path: &Path,
-        options: &Options,
+        options: &LSPLintOptions,
         nested_ignore_patterns: &mut Vec<(Vec<String>, PathBuf)>,
     ) -> (ConcurrentHashMap<PathBuf, Config>, Vec<PathBuf>) {
         let mut extended_paths = Vec::new();
@@ -394,9 +394,10 @@ mod test {
     use std::path::{Path, PathBuf};
 
     use crate::{
-        Options,
-        linter::server_linter::{ServerLinter, normalize_path},
-        options::Run,
+        linter::{
+            options::{LintOptions, Run, UnusedDisableDirectives},
+            server_linter::{ServerLinter, normalize_path},
+        },
         tester::{Tester, get_file_path},
     };
     use rustc_hash::FxHashMap;
@@ -417,7 +418,7 @@ mod test {
         let mut nested_ignore_patterns = Vec::new();
         let (configs, _) = ServerLinter::create_nested_configs(
             Path::new("/root/"),
-            &Options { flags, ..Options::default() },
+            &LintOptions { flags, ..LintOptions::default() },
             &mut nested_ignore_patterns,
         );
 
@@ -429,7 +430,7 @@ mod test {
         let mut nested_ignore_patterns = Vec::new();
         let (configs, _) = ServerLinter::create_nested_configs(
             &get_file_path("fixtures/linter/init_nested_configs"),
-            &Options::default(),
+            &LintOptions::default(),
             &mut nested_ignore_patterns,
         );
         let configs = configs.pin();
@@ -448,7 +449,7 @@ mod test {
     fn test_lint_on_run_on_type_on_type() {
         Tester::new(
             "fixtures/linter/lint_on_run/on_type",
-            Some(Options { type_aware: true, run: Run::OnType, ..Default::default() }),
+            Some(LintOptions { type_aware: true, run: Run::OnType, ..Default::default() }),
         )
         .test_and_snapshot_single_file_with_run_type("on-type.ts", Run::OnType);
     }
@@ -458,7 +459,7 @@ mod test {
     fn test_lint_on_run_on_type_on_save() {
         Tester::new(
             "fixtures/linter/lint_on_run/on_save",
-            Some(Options { type_aware: true, run: Run::OnType, ..Default::default() }),
+            Some(LintOptions { type_aware: true, run: Run::OnType, ..Default::default() }),
         )
         .test_and_snapshot_single_file_with_run_type("on-save.ts", Run::OnSave);
     }
@@ -468,7 +469,7 @@ mod test {
     fn test_lint_on_run_on_save_on_type() {
         Tester::new(
             "fixtures/linter/lint_on_run/on_save",
-            Some(Options { type_aware: true, run: Run::OnSave, ..Default::default() }),
+            Some(LintOptions { type_aware: true, run: Run::OnSave, ..Default::default() }),
         )
         .test_and_snapshot_single_file_with_run_type("on-type.ts", Run::OnType);
     }
@@ -478,7 +479,7 @@ mod test {
     fn test_lint_on_run_on_save_on_save() {
         Tester::new(
             "fixtures/linter/lint_on_run/on_type",
-            Some(Options { type_aware: true, run: Run::OnSave, ..Default::default() }),
+            Some(LintOptions { type_aware: true, run: Run::OnSave, ..Default::default() }),
         )
         .test_and_snapshot_single_file_with_run_type("on-save.ts", Run::OnSave);
     }
@@ -553,23 +554,22 @@ mod test {
     fn test_multiple_suggestions() {
         Tester::new(
             "fixtures/linter/multiple_suggestions",
-            Some(Options {
+            Some(LintOptions {
                 flags: FxHashMap::from_iter([(
                     "fix_kind".to_string(),
                     "safe_fix_or_suggestion".to_string(),
                 )]),
-                ..Options::default()
+                ..Default::default()
             }),
         )
         .test_and_snapshot_single_file("forward_ref.ts");
     }
 
     #[test]
     fn test_report_unused_directives() {
-        use crate::options::UnusedDisableDirectives;
         Tester::new(
             "fixtures/linter/unused_disabled_directives",
-            Some(Options {
+            Some(LintOptions {
                 unused_disable_directives: UnusedDisableDirectives::Deny,
                 ..Default::default()
             }),
@@ -588,7 +588,7 @@ mod test {
     fn test_ts_alias() {
         Tester::new(
             "fixtures/linter/ts_path_alias",
-            Some(Options {
+            Some(LintOptions {
                 ts_config_path: Some("./deep/tsconfig.json".to_string()),
                 ..Default::default()
             }),
@@ -601,7 +601,7 @@ mod test {
     fn test_tsgo_lint() {
         let tester = Tester::new(
             "fixtures/linter/tsgolint",
-            Some(Options { type_aware: true, run: Run::OnSave, ..Default::default() }),
+            Some(LintOptions { type_aware: true, run: Run::OnSave, ..Default::default() }),
         );
         tester.test_and_snapshot_single_file("no-floating-promises/index.ts");
     }
diff --git a/crates/oxc_language_server/src/main.rs b/crates/oxc_language_server/src/main.rs
@@ -3,6 +3,7 @@ use std::{str::FromStr, sync::Arc};
 use futures::future::join_all;
 use log::{debug, info, warn};
 use rustc_hash::FxBuildHasher;
+use serde::Deserialize;
 use serde_json::json;
 use tokio::sync::{OnceCell, RwLock, SetError};
 use tower_lsp_server::{
@@ -21,6 +22,7 @@ use tower_lsp_server::{
 mod capabilities;
 mod code_actions;
 mod commands;
+mod formatter;
 mod linter;
 mod options;
 #[cfg(test)]
@@ -64,7 +66,7 @@ impl LanguageServer for Backend {
                 return Some(new_settings);
             }
 
-            let deprecated_settings = Options::try_from(value.get_mut("settings")?.take()).ok();
+            let deprecated_settings = Options::deserialize(value.get_mut("settings")?.take()).ok();
 
             // the client has deprecated settings and has a deprecated root uri.
             // handle all things like the old way
diff --git a/crates/oxc_language_server/src/options.rs b/crates/oxc_language_server/src/options.rs
diff --git a/crates/oxc_language_server/src/tester.rs b/crates/oxc_language_server/src/tester.rs
diff --git a/crates/oxc_language_server/src/worker.rs b/crates/oxc_language_server/src/worker.rs
