Merge pull request #15 from calvinmetcalf/no-object-keys

remove object keys, because we can't have nice things

index.js

@@ -2,13 +2,17 @@
 var buffer = require('buffer')
 var Buffer = buffer.Buffer
 
+// alternative to using Object.keys for old browsers
+function copyProps (src, dst) {
+  for (var key in src) {
+    dst[key] = src[key]
+  }
+}
 if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
   module.exports = buffer
 } else {
   // Copy properties from require('buffer')
-  Object.keys(buffer).forEach(function (prop) {
-    exports[prop] = buffer[prop]
-  })
+  copyProps(buffer, exports)
   exports.Buffer = SafeBuffer
 }
 
@@ -17,9 +21,7 @@ function SafeBuffer (arg, encodingOrOffset, length) {
 }
 
 // Copy static methods from Buffer
-Object.keys(Buffer).forEach(function (prop) {
-  SafeBuffer[prop] = Buffer[prop]
-})
+copyProps(Buffer, SafeBuffer)
 
 SafeBuffer.from = function (arg, encodingOrOffset, length) {
   if (typeof arg === 'number') {