fix: ensure no node_modules directory is created when a package.json exists and no npm dependencies are used (#18134)

Closes #18133
Closes #18038

2 files changed, 9 insertions, 0 deletions

diff --git a/cli/npm/resolution/snapshot.rs b/cli/npm/resolution/snapshot.rs
index e986294ec..e8df8286e 100644
--- a/cli/npm/resolution/snapshot.rs
+++ b/cli/npm/resolution/snapshot.rs
@@ -127,6 +127,11 @@ mod map_to_vec {
 }
 
 impl NpmResolutionSnapshot {
+  /// Gets if this snapshot is empty.
+  pub fn is_empty(&self) -> bool {
+    self.packages.is_empty() && self.pending_unresolved_packages.is_empty()
+  }
+
   /// Resolve a package from a package requirement.
   pub fn resolve_pkg_from_pkg_req(
     &self,
diff --git a/cli/npm/resolvers/local.rs b/cli/npm/resolvers/local.rs
index 89f5decd8..3e2710165 100644
--- a/cli/npm/resolvers/local.rs
+++ b/cli/npm/resolvers/local.rs
@@ -236,6 +236,10 @@ async fn sync_resolution_with_fs(
   registry_url: &Url,
   root_node_modules_dir_path: &Path,
 ) -> Result<(), AnyError> {
+  if snapshot.is_empty() {
+    return Ok(()); // don't create the directory
+  }
+
   let deno_local_registry_dir = root_node_modules_dir_path.join(".deno");
   fs::create_dir_all(&deno_local_registry_dir).with_context(|| {
     format!("Creating '{}'", deno_local_registry_dir.display())