diff --git a/tfjs-core/src/platforms/platform_browser.ts b/tfjs-core/src/platforms/platform_browser.ts
index 1a1c0d9943..92a6799231 100644
--- a/tfjs-core/src/platforms/platform_browser.ts
+++ b/tfjs-core/src/platforms/platform_browser.ts
@@ -93,11 +93,16 @@ export class PlatformBrowser implements Platform {
 
   isTypedArray(a: unknown): a is Uint8Array | Float32Array | Int32Array
     | Uint8ClampedArray {
-    return a instanceof Float32Array || a instanceof Int32Array ||
-      a instanceof Uint8Array || a instanceof Uint8ClampedArray;
+    return isTypedArrayBrowser(a);
   }
 }
 
+export function isTypedArrayBrowser(a: unknown): a is Uint8Array
+  | Float32Array | Int32Array | Uint8ClampedArray {
+  return a instanceof Float32Array || a instanceof Int32Array ||
+    a instanceof Uint8Array || a instanceof Uint8ClampedArray;
+}
+
 if (env().get('IS_BROWSER')) {
   env().setPlatform('browser', new PlatformBrowser());
 
diff --git a/tfjs-core/src/util.ts b/tfjs-core/src/util.ts
index f60349b846..493a4dbc8a 100644
--- a/tfjs-core/src/util.ts
+++ b/tfjs-core/src/util.ts
@@ -16,6 +16,7 @@
  */
 
 import {env} from './environment';
+import { isTypedArrayBrowser, PlatformBrowser } from './platforms/platform_browser';
 import {BackendValues, DataType, RecursiveArray, TensorLike, TypedArray} from './types';
 import * as base from './util_base';
 export * from './util_base';
@@ -134,7 +135,8 @@ export function decodeString(bytes: Uint8Array, encoding = 'utf-8'): string {
 
 export function isTypedArray(a: {}): a is Float32Array|Int32Array|Uint8Array|
     Uint8ClampedArray {
-  return env().platform.isTypedArray(a);
+  const isTypedArray = env().platform.isTypedArray || isTypedArrayBrowser;
+  return isTypedArray(a);
 }
 
 // NOTE: We explicitly type out what T extends instead of any so that