Re: [whatwg/fetch] Aborting fetch (#523)

jakearchibald commented on this pull request.



> @@ -5401,6 +5535,30 @@ method, must run these steps:
  <li><p>Return <var>p</var>.
 </ol>
 
+<p>To <dfn>abort fetch</dfn> with a <var>promise</var>, <var>request</var>, and
+<var>responseObject</var>, run these steps:
+
+<ol>
+ <li><p>Let <var>error</var> be an "<code><a exception>AbortError</a></code>" {{DOMException}}.
+
+ <li><p>Reject <var>promise</var> with <var>error</var>.
+
+ <li><p>If <var>request</var>'s <a for=request>body</a> is not null and is
+ <a for=ReadableStream>readable</a>, then <a for=ReadableStream>cancel</a> <var>request</var>'s
+ <a for=request>body</a> with <var>error</var>.
+
+ <li><p>If <var>responseObject</var> is null, then return.

It is if it's called as part of `fetch()` step 4.1.

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