1 files changed, 2 insertions, 5 deletions
diff --git a/cli/js/ops/fs/truncate.ts b/cli/js/ops/fs/truncate.ts
index 2b805e5ac..d18e5d9d9 100644
--- a/cli/js/ops/fs/truncate.ts
+++ b/cli/js/ops/fs/truncate.ts
@@ -1,12 +1,9 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
 import { sendSync, sendAsync } from "../dispatch_json.ts";
 
 function coerceLen(len?: number): number {
-  if (!len) {
-    return 0;
-  }
-
-  if (len < 0) {
+  if (len == null || len < 0) {
     return 0;
   }