2 files changed, 9 insertions, 3 deletions
diff --git a/runtime/js/98_global_scope.js b/runtime/js/98_global_scope.js
index 0c3bf7ea7..14b11cbde 100644
--- a/runtime/js/98_global_scope.js
+++ b/runtime/js/98_global_scope.js
@@ -36,7 +36,7 @@ import * as fetch from "ext:deno_fetch/26_fetch.js";
 import * as eventSource from "ext:deno_fetch/27_eventsource.js";
 import * as messagePort from "ext:deno_web/13_message_port.js";
 import * as webidl from "ext:deno_webidl/00_webidl.js";
-import DOMException from "ext:deno_web/01_dom_exception.js";
+import { DOMException } from "ext:deno_web/01_dom_exception.js";
 import * as abortSignal from "ext:deno_web/03_abort_signal.js";
 import * as globalInterfaces from "ext:deno_web/04_global_interfaces.js";
 import * as webStorage from "ext:deno_webstorage/01_webstorage.js";
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index 2e1b962e3..625d77f40 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -27,6 +27,9 @@ const {
   SymbolIterator,
   TypeError,
 } = primordials;
+const {
+  isNativeError,
+} = core;
 import * as util from "ext:runtime/06_util.js";
 import * as event from "ext:deno_web/02_event.js";
 import * as location from "ext:deno_web/12_location.js";
@@ -52,7 +55,7 @@ import {
 } from "ext:runtime/90_deno_ns.js";
 import { errors } from "ext:runtime/01_errors.js";
 import * as webidl from "ext:deno_webidl/00_webidl.js";
-import DOMException from "ext:deno_web/01_dom_exception.js";
+import { DOMException } from "ext:deno_web/01_dom_exception.js";
 import {
   mainRuntimeGlobalProperties,
   memoizeLazy,
@@ -235,7 +238,10 @@ const opPpid = memoizeLazy(() => ops.op_ppid());
 setNoColorFn(() => ops.op_bootstrap_no_color() || !ops.op_bootstrap_is_tty());
 
 function formatException(error) {
-  if (ObjectPrototypeIsPrototypeOf(ErrorPrototype, error)) {
+  if (
+    isNativeError(error) ||
+    ObjectPrototypeIsPrototypeOf(ErrorPrototype, error)
+  ) {
     return null;
   } else if (typeof error == "string") {
     return `Uncaught ${