Zoid iframe support does not work with Chrome 76, 77

Zoid iframe support does not work with Chrome 76, 77 which will be released soon. The props are not passed down into window.xprops which is undefined inside the zoid iframe. In Chrome 75 the problem is not reproducible.

Further investigation shows that on Chrome 76, 77 window.name is empty inside the child page and zoid depends on the name to make the connection between parent and child pages. The error starts in https://github.com/krakenjs/zoid/blob/a27434d5452a2f18a41116baceb654c414e0e294/src/child/window.js at line 38 where window.name is used:

export function getChildPayload() : ?ChildPayload { try { return parseChildWindowName(window.name); } catch (err) { // pass } }

The thrown exception is not logged.

Notes:

• The parent and the child pages must be on different domains.
• zoid version: 9.0.27
• The Chrome 76, 77 changes can be found here: https://www.chromestatus.com/features#milestone%3D76
• Chrome 77 can be downloaded here: https://www.google.com/intl/en/chrome/canary/

[bluepnume]

OK. I repro’d the race-condition in a simplified environment at http://bluesuncorp.co.uk/icv4/foo.htm

Got it so the bug appears in canary but not standard chrome. The issue was the window name was being set AFTER the window location. That works in chrome but not canary.

I’ll roll out the paypal sdk with this fix this week. Thanks again for catching this! As mentioned zoid is published with the fix.

[doublemarked]

@StanculescuDaniel thank you tremendously for identifying and isolating this issue, and of course to @bluepnume for fixing it. I invested only a mere hour tonight in what would have been much worse otherwise.