From b1e1531b256fd094e7c6cb36a331a4477134c48a Mon Sep 17 00:00:00 2001
From: Boshen <1430279+Boshen@users.noreply.github.com>
Date: Tue, 28 Oct 2025 12:46:49 +0000
Subject: [PATCH] refactor(language_server): Extract library interface from
 main.rs (#15036)
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## Summary
- Created `lib.rs` to expose the language server as a library
- Moved module declarations, type aliases, and constants from `main.rs` to `lib.rs`
- Simplified `main.rs` to only contain the binary entry point

## Test plan
- [ ] Build succeeds: `cargo build -p oxc_language_server`
- [ ] Tests pass: `cargo test -p oxc_language_server`

🤖 Generated with [Claude Code](https://claude.com/claude-code)
---
 crates/oxc_language_server/src/lib.rs         | 23 +++++++++++++++++++
 .../src/linter/server_linter.rs               |  2 ++
 crates/oxc_language_server/src/main.rs        | 22 +-----------------
 crates/oxc_language_server/src/worker.rs      |  6 +++++
 4 files changed, 32 insertions(+), 21 deletions(-)
 create mode 100644 crates/oxc_language_server/src/lib.rs

diff --git a/crates/oxc_language_server/src/lib.rs b/crates/oxc_language_server/src/lib.rs
new file mode 100644
index 0000000000000..e69ce00685cdc
--- /dev/null
+++ b/crates/oxc_language_server/src/lib.rs
@@ -0,0 +1,23 @@
+use rustc_hash::FxBuildHasher;
+
+mod backend;
+mod capabilities;
+mod code_actions;
+mod commands;
+mod file_system;
+mod formatter;
+mod linter;
+mod options;
+#[cfg(test)]
+mod tester;
+mod utils;
+mod worker;
+
+pub use crate::backend::Backend;
+pub use crate::linter::server_linter::ServerLinter;
+pub use crate::worker::WorkspaceWorker;
+
+pub type ConcurrentHashMap<K, V> = papaya::HashMap<K, V, FxBuildHasher>;
+
+pub const LINT_CONFIG_FILE: &str = ".oxlintrc.json";
+pub const FORMAT_CONFIG_FILES: &[&str; 2] = &[".oxfmtrc.json", ".oxfmtrc.jsonc"];
diff --git a/crates/oxc_language_server/src/linter/server_linter.rs b/crates/oxc_language_server/src/linter/server_linter.rs
index c2798e2b65c30..81236a0b3d30f 100644
--- a/crates/oxc_language_server/src/linter/server_linter.rs
+++ b/crates/oxc_language_server/src/linter/server_linter.rs
@@ -86,6 +86,8 @@ impl ServerLinterDiagnostics {
 }
 
 impl ServerLinter {
+    /// # Panics
+    /// Panics if the root URI cannot be converted to a file path.
     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();
diff --git a/crates/oxc_language_server/src/main.rs b/crates/oxc_language_server/src/main.rs
index 72722db4fcca9..0968439405b72 100644
--- a/crates/oxc_language_server/src/main.rs
+++ b/crates/oxc_language_server/src/main.rs
@@ -1,26 +1,6 @@
-use rustc_hash::FxBuildHasher;
+use oxc_language_server::Backend;
 use tower_lsp_server::{LspService, Server};
 
-mod backend;
-mod capabilities;
-mod code_actions;
-mod commands;
-mod file_system;
-mod formatter;
-mod linter;
-mod options;
-#[cfg(test)]
-mod tester;
-mod utils;
-mod worker;
-
-use crate::backend::Backend;
-
-type ConcurrentHashMap<K, V> = papaya::HashMap<K, V, FxBuildHasher>;
-
-const LINT_CONFIG_FILE: &str = ".oxlintrc.json";
-const FORMAT_CONFIG_FILES: &[&str; 2] = &[".oxfmtrc.json", ".oxfmtrc.jsonc"];
-
 #[tokio::main]
 async fn main() {
     env_logger::init();
diff --git a/crates/oxc_language_server/src/worker.rs b/crates/oxc_language_server/src/worker.rs
index e3dcaabb55aa6..13d5536b6937c 100644
--- a/crates/oxc_language_server/src/worker.rs
+++ b/crates/oxc_language_server/src/worker.rs
@@ -56,6 +56,9 @@ impl WorkspaceWorker {
     /// e.g. root URI: file:///path/to/root
     ///      responsible for: file:///path/to/root/file.js
     ///      not responsible for: file:///path/to/other/file.js
+    ///
+    /// # Panics
+    /// Panics if the root URI cannot be converted to a file path.
     pub fn is_responsible_for_uri(&self, uri: &Uri) -> bool {
         if let Some(path) = uri.to_file_path() {
             return path.starts_with(self.root_uri.to_file_path().unwrap());
@@ -336,6 +339,9 @@ impl WorkspaceWorker {
     }
 
     /// Handle server configuration changes from the client
+    ///
+    /// # Panics
+    /// Panics if the root URI cannot be converted to a file path.
     pub async fn did_change_configuration(
         &self,
         changed_options: &Options,