[wp-trac] [WordPress Trac] #58145: JS error: Uncaught ReferenceError: Element is not defined

[WordPress Trac]

#58145: JS error: Uncaught ReferenceError: Element is not defined
--------------------------+------------------------------
 Reporter:  jankyz        |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Editor        |     Version:  6.2
 Severity:  normal        |  Resolution:
 Keywords:  needs-patch   |     Focuses:  javascript
--------------------------+------------------------------

Comment (by mattjones2207):

 I'm also getting this.

 In my case it's caused by a WebWorker within Yoast, which overwrites the
 `window` variable.

 The fix would seem to be just to bail early if `window` is a `WebWorker`
 object, similar to the existing 'Running in browser' check.

 {{{#!php
 <?php
 // Return early if we're not running inside of the browser.
 if (typeof window === 'undefined') {
     return;
 }

 // Return early if running as a webworker
 if (typeof WorkerGlobalScope !== 'undefined' && self instanceof
 WorkerGlobalScope) {
     return;
 }
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/58145#comment:2>
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