add back support for browsers without SharedArrayBuffer

SharedArrayBuffer support originally added in #259
feross · Mar 6, 2020 · ae2ab67 · ae2ab67
1 parent 030bb0c
commit ae2ab67
Showing 1 changed file with 3 additions and 2 deletions.
diff --git 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)
   }