1 files changed, 86 insertions, 0 deletions
diff --git a/ext/node_resolver/sync.rs b/ext/node_resolver/sync.rs
new file mode 100644
index 000000000..f6689a56a
--- /dev/null
+++ b/ext/node_resolver/sync.rs
@@ -0,0 +1,86 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+
+pub use inner::*;
+
+#[cfg(feature = "sync")]
+mod inner {
+  #![allow(clippy::disallowed_types)]
+
+  use std::ops::Deref;
+  use std::ops::DerefMut;
+  pub use std::sync::Arc as MaybeArc;
+
+  pub struct MaybeArcMutexGuard<'lock, T>(std::sync::MutexGuard<'lock, T>);
+
+  impl<'lock, T> Deref for MaybeArcMutexGuard<'lock, T> {
+    type Target = std::sync::MutexGuard<'lock, T>;
+    fn deref(&self) -> &std::sync::MutexGuard<'lock, T> {
+      &self.0
+    }
+  }
+
+  impl<'lock, T> DerefMut for MaybeArcMutexGuard<'lock, T> {
+    fn deref_mut(&mut self) -> &mut std::sync::MutexGuard<'lock, T> {
+      &mut self.0
+    }
+  }
+
+  #[derive(Debug)]
+  pub struct MaybeArcMutex<T>(std::sync::Arc<std::sync::Mutex<T>>);
+  impl<T> MaybeArcMutex<T> {
+    pub fn new(val: T) -> Self {
+      Self(std::sync::Arc::new(std::sync::Mutex::new(val)))
+    }
+  }
+
+  impl<'lock, T> MaybeArcMutex<T> {
+    pub fn lock(&'lock self) -> MaybeArcMutexGuard<'lock, T> {
+      MaybeArcMutexGuard(self.0.lock().unwrap())
+    }
+  }
+
+  pub use core::marker::Send as MaybeSend;
+  pub use core::marker::Sync as MaybeSync;
+}
+
+#[cfg(not(feature = "sync"))]
+mod inner {
+  use std::ops::Deref;
+  use std::ops::DerefMut;
+
+  pub use std::rc::Rc as MaybeArc;
+
+  pub struct MaybeArcMutexGuard<'lock, T>(std::cell::RefMut<'lock, T>);
+
+  impl<'lock, T> Deref for MaybeArcMutexGuard<'lock, T> {
+    type Target = std::cell::RefMut<'lock, T>;
+    fn deref(&self) -> &std::cell::RefMut<'lock, T> {
+      &self.0
+    }
+  }
+
+  impl<'lock, T> DerefMut for MaybeArcMutexGuard<'lock, T> {
+    fn deref_mut(&mut self) -> &mut std::cell::RefMut<'lock, T> {
+      &mut self.0
+    }
+  }
+
+  #[derive(Debug)]
+  pub struct MaybeArcMutex<T>(std::rc::Rc<std::cell::RefCell<T>>);
+  impl<T> MaybeArcMutex<T> {
+    pub fn new(val: T) -> Self {
+      Self(std::rc::Rc::new(std::cell::RefCell::new(val)))
+    }
+  }
+
+  impl<'lock, T> MaybeArcMutex<T> {
+    pub fn lock(&'lock self) -> MaybeArcMutexGuard<'lock, T> {
+      MaybeArcMutexGuard(self.0.borrow_mut())
+    }
+  }
+
+  pub trait MaybeSync {}
+  impl<T> MaybeSync for T where T: ?Sized {}
+  pub trait MaybeSend {}
+  impl<T> MaybeSend for T where T: ?Sized {}
+}