[wp-trac] [WordPress Trac] #25047: Improve heartbeat queue checking

[WordPress Trac]

#25047: Improve heartbeat queue checking
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 Reporter:  evansolomon   |       Owner:  azaozz
     Type:  defect (bug)  |      Status:  assigned
 Priority:  normal        |   Milestone:  3.7
Component:  General       |     Version:
 Severity:  normal        |  Resolution:
 Keywords:  has-patch     |
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Comment (by azaozz):

 Thinking more about this: there is a good user case to set a queued item
 to `false`. There is even a case to set it to `null`. If we return `false`
 or `null` from `wp.heartbeat.isQueued()` and use that function in
 `wp.heartbeat.enqueue()` we will miss either one or the other.

 In addition, `obj.hasOwnProperty()` works pretty much like `isset()` in
 PHP, i.e. it doesn't care what the value is, only checks whether the
 property exists. So it would be best to use hasOwnProperty directly in
 `wp.heartbeat.enqueue()` and return `undefined` from
 `wp.heartbeat.isQueued()`.

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Ticket URL: <http://core.trac.wordpress.org/ticket/25047#comment:6>
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