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<base href="https://bugs.webkit.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Promise callbacks should be called at microtask checkpoints"
href="https://bugs.webkit.org/show_bug.cgi?id=147933">147933</a>
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<th>Summary</th>
<td>Promise callbacks should be called at microtask checkpoints
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>528+ (Nightly build)
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<th>Hardware</th>
<td>Unspecified
</td>
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<th>OS</th>
<td>Unspecified
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>JavaScriptCore
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
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<th>Reporter</th>
<td>jaffathecake@gmail.com
</td>
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<p>
<div>
<pre>Here is a demo of the issue: <a href="http://jsbin.com/kaqume/1/edit?js,console,output">http://jsbin.com/kaqume/1/edit?js,console,output</a>
Click the blue square. The `promise` logs should appear before the `mutate` logs. The correct ordering is:
"click"
"promise"
"mutate"
"click"
"promise"
"mutate"
"timeout"
"timeout"
The microtask queue should be emptied once a listener callback has finished, before returning to spec prose. Promise callbacks seem to run on a different queue in WebKit.</pre>
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</p>
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