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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 - "this" missing after await in async arrow function"
href="https://bugs.webkit.org/show_bug.cgi?id=166919">166919</a>
</td>
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<th>Summary</th>
<td>"this" missing after await in async arrow function
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>WebKit Nightly Build
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Unspecified
</td>
</tr>
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<th>OS</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>Normal
</td>
</tr>
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<th>Priority</th>
<td>P2
</td>
</tr>
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<th>Component</th>
<td>JavaScriptCore
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>hszhsh@icloud.com
</td>
</tr></table>
<p>
<div>
<pre>My test code is as follows.
function runSomething(callback) {
callback();
}
class Test {
testFunc() {
this.prop = "123";
runSomething(async () => {
console.log("callback " + this.prop); // It's ok here
await sleep(2);
console.log("callback end " + this.prop); // TypeError: undefined is not an object (evaluating 'this.prop')
});
}
}
let t = new Test();
t.testFunc();</pre>
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