2 files changed, 11 insertions, 1 deletions
diff --git a/js/mkdir_test.ts b/js/mkdir_test.ts
index ed275bd36..4f82401dc 100644
--- a/js/mkdir_test.ts
+++ b/js/mkdir_test.ts
@@ -9,6 +9,15 @@ testPerm({ write: true }, function mkdirSyncSuccess() {
   assert(pathInfo.isDirectory());
 });
 
+testPerm({ write: true }, function mkdirSyncMode() {
+  const path = deno.makeTempDirSync() + "/dir/subdir";
+  deno.mkdirSync(path, 0o755); // no perm for x
+  const pathInfo = deno.statSync(path);
+  if (pathInfo.mode !== null) { // Skip windows
+    assertEqual(pathInfo.mode & 0o777, 0o755);
+  }
+});
+
 testPerm({ write: false }, function mkdirSyncPerm() {
   let err;
   try {
diff --git a/js/stat.ts b/js/stat.ts
index 3193794a5..434841ec2 100644
--- a/js/stat.ts
+++ b/js/stat.ts
@@ -51,7 +51,8 @@ export class FileInfo {
     this.modified = modified ? modified : null;
     this.accessed = accessed ? accessed : null;
     this.created = created ? created : null;
-    this.mode = mode >= 0 ? mode : null; // null if invalid mode (Windows)
+    // null if invalid mode (Windows)
+    this.mode = mode >= 0 ? mode & 0o7777 : null;
   }
 
   /**