2 files changed, 36 insertions, 0 deletions
diff --git a/runtime/js/01_errors.js b/runtime/js/01_errors.js
index 8288e3ce9..0c54f6581 100644
--- a/runtime/js/01_errors.js
+++ b/runtime/js/01_errors.js
@@ -131,6 +131,34 @@ class NotSupported extends Error {
   }
 }
 
+class FilesystemLoop extends Error {
+  constructor(msg) {
+    super(msg);
+    this.name = "FilesystemLoop";
+  }
+}
+
+class IsADirectory extends Error {
+  constructor(msg) {
+    super(msg);
+    this.name = "IsADirectory";
+  }
+}
+
+class NetworkUnreachable extends Error {
+  constructor(msg) {
+    super(msg);
+    this.name = "NetworkUnreachable";
+  }
+}
+
+class NotADirectory extends Error {
+  constructor(msg) {
+    super(msg);
+    this.name = "NotADirectory";
+  }
+}
+
 const errors = {
   NotFound,
   PermissionDenied,
@@ -152,6 +180,10 @@ const errors = {
   Http,
   Busy,
   NotSupported,
+  FilesystemLoop,
+  IsADirectory,
+  NetworkUnreachable,
+  NotADirectory,
 };
 
 export { errors };
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index 511368141..0c8989701 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -251,6 +251,10 @@ core.registerErrorClass("BadResource", errors.BadResource);
 core.registerErrorClass("Http", errors.Http);
 core.registerErrorClass("Busy", errors.Busy);
 core.registerErrorClass("NotSupported", errors.NotSupported);
+core.registerErrorClass("FilesystemLoop", errors.FilesystemLoop);
+core.registerErrorClass("IsADirectory", errors.IsADirectory);
+core.registerErrorClass("NetworkUnreachable", errors.NetworkUnreachable);
+core.registerErrorClass("NotADirectory", errors.NotADirectory);
 core.registerErrorBuilder(
   "DOMExceptionOperationError",
   function DOMExceptionOperationError(msg) {