From e7fc81263beb0f042a15d7ba912aca1e49ecb595 Mon Sep 17 00:00:00 2001
From: Kenta Moriuchi <moriken@kimamass.com>
Date: Sat, 28 Aug 2021 02:23:32 +0900
Subject: [PATCH] Update isDataView

---
 src/helper/is.mjs | 32 ++++++++++++++++++++++----------
 1 file changed, 22 insertions(+), 10 deletions(-)

diff --git a/src/helper/is.mjs b/src/helper/is.mjs
index 456a2b1e..b21b76b9 100644
--- a/src/helper/is.mjs
+++ b/src/helper/is.mjs
@@ -14,16 +14,6 @@ export function isObjectLike(value) {
     return value !== null && typeof value === "object";
 }
 
-const toString = Object.prototype.toString;
-
-/**
- * @param {unknown} value
- * @returns {value is DataView}
- */
-export function isDataView(value) {
-    return ArrayBuffer.isView(value) && toString.call(value) === "[object DataView]";
-}
-
 // Inspired by util.types implementation of Node.js
 const TypedArrayPrototype = Object.getPrototypeOf(Uint8Array).prototype;
 const getTypedArrayPrototypeSybolToStringTag = Object.getOwnPropertyDescriptor(TypedArrayPrototype, Symbol.toStringTag).get;
@@ -44,6 +34,28 @@ export function isUint16Array(value) {
     return getTypedArrayPrototypeSybolToStringTag.call(value) === "Uint16Array";
 }
 
+const toString = Object.prototype.toString;
+
+/**
+ * @param {unknown} value
+ * @returns {value is DataView}
+ */
+ export function isDataView(value) {
+    if (!ArrayBuffer.isView(value)) {
+        return false;
+    }
+
+    if (isTypedArray(value)) {
+        return false;
+    }
+
+    if (toString.call(value) !== "[object DataView]") {
+        return false;
+    }
+
+    return true;
+}
+
 /**
  * @param {unknown} value
  * @returns {value is ArrayBuffer}