perf(node/fs): faster `existsSync` when not exists (#21458)

1 files changed, 26 insertions, 0 deletions

diff --git a/ext/node/ops/fs.rs b/ext/node/ops/fs.rs
new file mode 100644
index 000000000..b21652634
--- /dev/null
+++ b/ext/node/ops/fs.rs
@@ -0,0 +1,26 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+
+use std::path::PathBuf;
+
+use deno_core::error::AnyError;
+use deno_core::op2;
+use deno_core::OpState;
+use deno_fs::FileSystemRc;
+
+use crate::NodePermissions;
+
+#[op2(fast)]
+pub fn op_node_fs_exists_sync<P>(
+  state: &mut OpState,
+  #[string] path: String,
+) -> Result<bool, AnyError>
+where
+  P: NodePermissions + 'static,
+{
+  let path = PathBuf::from(path);
+  state
+    .borrow_mut::<P>()
+    .check_read_with_api_name(&path, Some("node:fs.existsSync()"))?;
+  let fs = state.borrow::<FileSystemRc>();
+  Ok(fs.lstat_sync(&path).is_ok())
+}