From: Feross Aboukhadijeh <feross@feross.org>
Date: Fri, 6 Mar 2020 19:49:35 +0000 (-0800)
Subject: add back support for browsers without SharedArrayBuffer
X-Git-Url: https://zoso.dev/?a=commitdiff_plain;h=ae2ab6740394bc60c0e28fc5eca67b2e663a688a;p=buffer.git

add back support for browsers without SharedArrayBuffer

SharedArrayBuffer support originally added in https://github.com/feross/buffer/pull/259
---

diff --git a/index.js b/index.js
index 8f8b708..4ec5595 100644
--- a/index.js
+++ b/index.js
@@ -142,8 +142,9 @@ function from (value, encodingOrOffset, length) {
     return fromArrayBuffer(value, encodingOrOffset, length)
   }
 
-  if (isInstance(value, SharedArrayBuffer) ||
-      (value && isInstance(value.buffer, SharedArrayBuffer))) {
+  if (typeof SharedArrayBuffer !== 'undefined' &&
+      (isInstance(value, SharedArrayBuffer) ||
+      (value && isInstance(value.buffer, SharedArrayBuffer)))) {
     return fromArrayBuffer(value, encodingOrOffset, length)
   }