diff --git a/src/buffer/worker.rs b/src/buffer/worker.rs
index 0967593..3f7dfeb 100644
--- a/src/buffer/worker.rs
+++ b/src/buffer/worker.rs
@@ -145,8 +145,7 @@ impl ControllerWorker<TextChange> for BufferWorker {
 							let new_local_v = branch.local_version();
 
 							let hash = if timer.step() {
-								let hash = xxhash_rust::xxh3::xxh3_64(branch.content().to_string().as_bytes());
-								Some(i64::from_ne_bytes(hash.to_ne_bytes()))
+								Some(crate::hash(branch.content().to_string()))
 							} else { None };
 
 							let tc = crate::api::change::TextChange {
diff --git a/src/ext.rs b/src/ext.rs
index bee1cb4..4733b82 100644
--- a/src/ext.rs
+++ b/src/ext.rs
@@ -49,6 +49,11 @@ pub async fn select_buffer(
 	}
 }
 
+pub fn hash(data: impl AsRef<[u8]>) -> i64 {
+	let hash = xxhash_rust::xxh3::xxh3_64(data.as_ref());
+	i64::from_ne_bytes(hash.to_ne_bytes())
+}
+
 /// wraps sender and receiver to allow mutable field with immutable ref
 #[derive(Debug)]
 pub struct InternallyMutable<T> {
diff --git a/src/lib.rs b/src/lib.rs
index 47107bd..964b64d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -149,3 +149,5 @@ pub use errors::Result;
 pub use client::Client;
 
 pub use workspace::Workspace;
+
+pub use ext::hash;