ArrayBuffer.isView is undefined

[hitsthings]

1. Which version of PhantomJS are you using? Tip: run phantomjs --version.
   2.1.1

2. What steps will reproduce the problem?

3. Open a webpage with in-browser JS that runs ArrayBuffer.isView("{}")

4. Which operating system are you using? OSX

5. Did you use binary PhantomJS or did you compile it from source?
   npm install -g

6. Please provide any additional information below.
   This function is supported in all major browsers (and is used by BrowserFS, which therefore fails).

Cross-reference with BrowserFS issue - jvilk/BrowserFS#175

This is causing an archiving issue for the Internet Archive iiuc - https://twitter.com/textfiles/status/838185877067071488

[twalpole]

ArrayBuffer is ES2015 which PhantomJS 2.1.1 doesn't support -- try the 2.5 beta, or polyfill it

[hitsthings]

Thanks for that! The weird thing is that ArrayBuffer existed, but had no isView method. Possible there was some half polyfill mixed in somewhere. I tried the beta but I'm getting

[user dir]$ /Users/user/Downloads/phantomjs-2.5.0-beta-macos/bin/phantomjs script.js
dyld: Library not loaded: /usr/local/opt/webp/lib/libwebp.6.dylib
  Referenced from: /Users/user/Downloads/phantomjs-2.5.0-beta-macos/bin/phantomjs
  Reason: image not found
Trace/BPT trap: 5

I'll need to figure that out to see if the beta fixes it. Thanks again!

[ariya]

Modern JavaScript features (from ES6/ES2015 or later) will be only supported via an updated QtWebKit.
From now on, please track #15342. Thank you!