Javascript loading error in simple phantomjs script

[blackmad]

1. Which version of PhantomJS are you using? Tip: run phantomjs --version.
   2.1.1
2. What steps will reproduce the problem?
   screenshot.js:
   var page = require('webpage').create();
   var url = 'http://blackmad.github.io/stellabot/web/jaspers_dilemma.html';
   page.open(url, function() {
   page.render('github.png');
   phantom.exit();
   })

output:
[dblackman@tw-mbp-dblackman py_screenshot_server (master)]$ phantomjs screenshot.js
ReferenceError: Can't find variable: draw_everything

http://blackmad.github.io/stellabot/web/common.js:25 in resize_canvas
http://blackmad.github.io/stellabot/web/common.js:49
http://blackmad.github.io/stellabot/web/third_party/jquery.min.js:2 in i
http://blackmad.github.io/stellabot/web/third_party/jquery.min.js:2 in fireWith
http://blackmad.github.io/stellabot/web/third_party/jquery.min.js:2 in ready
http://blackmad.github.io/stellabot/web/third_party/jquery.min.js:2 in J
ReferenceError: Can't find variable: draw_everything

http://blackmad.github.io/stellabot/web/common.js:25 in resize_canvas
http://blackmad.github.io/stellabot/web/third_party/jquery.min.js:3 in dispatch
http://blackmad.github.io/stellabot/web/third_party/jquery.min.js:3 in handle
:0 in render
phantomjs://code/screenshot.js:4
phantomjs://platform/webpage.js:286 in _onPageOpenFinished
ReferenceError: Can't find variable: draw_everything

http://blackmad.github.io/stellabot/web/common.js:25 in resize_canvas
http://blackmad.github.io/stellabot/web/third_party/jquery.min.js:3 in dispatch
http://blackmad.github.io/stellabot/web/third_party/jquery.min.js:3 in handle
:0 in render
phantomjs://code/screenshot.js:4
phantomjs://platform/webpage.js:286 in _onPageOpenFinished

1. Which operating system are you using? OS X
2. Did you use binary PhantomJS or did you compile it from source? source
3. Please provide any additional information below.
   The page loads fine in chrome. I've tried making it more valid html (Didn't help) and changing from document.ready to window.load, didn't help either.

draw_everything is defined in jaspers_dilemma.js, I don't know why it's not getting loaded

[veltman]

I think the problem is this ES6-y default arg syntax:

function draw_everything({
  canvas = this.canvas,
  alwaysGlitch = this.alwaysGlitch
}){

if you replace with:

function drawEverything(params) {
  var canvas = params.canvas,
      alwaysGlitch = params.alwaysGlitch;

it seems to work.

[ariya]

Please track ES6 support in #14506. Thank you!