1 files changed, 4 insertions, 6 deletions
diff --git a/cli/js/read_dir_test.ts b/cli/js/read_dir_test.ts
index 77d2cbfe2..4496d7447 100644
--- a/cli/js/read_dir_test.ts
+++ b/cli/js/read_dir_test.ts
@@ -32,8 +32,7 @@ testPerm({ read: false }, function readDirSyncPerm(): void {
     Deno.readDirSync("tests/");
   } catch (e) {
     caughtError = true;
-    assertEquals(e.kind, Deno.ErrorKind.PermissionDenied);
-    assertEquals(e.name, "PermissionDenied");
+    assert(e instanceof Deno.Err.PermissionDenied);
   }
   assert(caughtError);
 });
@@ -46,7 +45,7 @@ testPerm({ read: true }, function readDirSyncNotDir(): void {
     src = Deno.readDirSync("cli/tests/fixture.json");
   } catch (err) {
     caughtError = true;
-    assertEquals(err.kind, Deno.ErrorKind.Other);
+    assert(err instanceof Error);
   }
   assert(caughtError);
   assertEquals(src, undefined);
@@ -60,7 +59,7 @@ testPerm({ read: true }, function readDirSyncNotFound(): void {
     src = Deno.readDirSync("bad_dir_name");
   } catch (err) {
     caughtError = true;
-    assertEquals(err.kind, Deno.ErrorKind.NotFound);
+    assert(err instanceof Deno.Err.NotFound);
   }
   assert(caughtError);
   assertEquals(src, undefined);
@@ -77,8 +76,7 @@ testPerm({ read: false }, async function readDirPerm(): Promise<void> {
     await Deno.readDir("tests/");
   } catch (e) {
     caughtError = true;
-    assertEquals(e.kind, Deno.ErrorKind.PermissionDenied);
-    assertEquals(e.name, "PermissionDenied");
+    assert(e instanceof Deno.Err.PermissionDenied);
   }
   assert(caughtError);
 });