Support structured serialization of AggregateErrors

Closes #5716.
whatwg · Jul 21, 2020 · de9bc6e · de9bc6e
1 parent d033d58
commit de9bc6e
Showing 1 changed file with 35 additions and 5 deletions.
diff --git a/source b/source
@@ -2764,6 +2764,7 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
      <li><dfn data-x-href="https://tc39.es/ecma262/#sec-well-known-intrinsic-objects">Well-Known Intrinsic Objects</dfn>, including
          <dfn data-x-href="https://tc39.es/ecma262/#sec-properties-of-the-array-prototype-object">%Array.prototype%</dfn>,
          <dfn data-x-href="https://tc39.es/ecma262/#sec-properties-of-the-error-prototype-object">%Error.prototype%</dfn>,
+         <dfn data-x-href="https://tc39.es/ecma262/#sec-properties-of-the-aggregate-error-prototype-objects">%AggregateError.prototype%</dfn>,
          <dfn>%EvalError.prototype%</dfn>,
          <dfn data-x-href="https://tc39.es/ecma262/#sec-properties-of-the-function-prototype-object">%Function.prototype%</dfn>,
          <dfn data-x-href="https://tc39.es/ecma262/#sec-json.parse">%JSON.parse%</dfn>,
@@ -8143,8 +8144,8 @@ interface <dfn>DOMStringList</dfn> {
      <li><p>Let <var>name</var> be ? <span data-x="js-Get">Get</span>(<var>value</var>,
      "name").</p></li>
 
-     <li><p>If <var>name</var> is not one of "Error", "EvalError", "RangeError", "ReferenceError",
-     "SyntaxError", "TypeError", or "URIError", then set <var>name</var> to "Error".</p></li>
+     <li><p>If <var>name</var> is not one of "AggregateError", "Error", "EvalError", "RangeError",
+     "ReferenceError", "SyntaxError", "TypeError", or "URIError", then set <var>name</var> to
 
      <li><p>Let <var>valueMessageDesc</var> be ? <var>value</var>.[[GetOwnProperty]]("<code
      data-x="">message</code>").</p></li>
@@ -8153,8 +8154,24 @@ interface <dfn>DOMStringList</dfn> {
      <span>IsDataDescriptor</span>(<var>valueMessageDesc</var>) is false, and
      ? <span>ToString</span>(<var>valueMessageDesc</var>.[[Value]]) otherwise.</p></li>
 
+     <li><p>Let <var>errors</var> be undefined.</p></li>
+
+     <li>
+      <p>If <var>name</var> is "AggregateError", then:</p>
+
+      <ol>
+       <li><p>Let <var>errorsDesc</var> be ? <var>value</var>.[[GetOwnProperty]]("<code
+       data-x="">errors</code>").</p></li>
+
+       <li><p>If <span>IsDataDescriptor</span>(<var>errorsDesc</var>) is true, then set
+       <var>errors</var> to ?
+       <span>StructuredSerializeInternal</span>(<var>errorsDesc</var>.[[Value]],
+       <var>forStorage</var>, <var>memory</var>).</p></li>
+      </ol>
+     </li>
+
      <li><p>Set <var>serialized</var> to { [[Type]]: "Error", [[Name]]: <var>name</var>,
-     [[Message]]: <var>message</var> }.</p></li>
+     [[Message]]: <var>message</var>, [[Errors]]: <var>errors</var> }.</p></li>
 
      <li>
       <p>User agents should attach a serialized representation of any interesting accompanying
@@ -8557,6 +8574,9 @@ o.myself = o;</code></pre>
     <ol>
      <li><p>Let <var>prototype</var> be <span>%Error.prototype%</span>.</p></li>
 
+     <li><p>If <var>serialized</var>.[[Name]] is "AggregateError", then set <var>prototype</var> to
+     <span>%AggregateError.prototype%</span>.</p></li>
+
      <li><p>If <var>serialized</var>.[[Name]] is "EvalError", then set <var>prototype</var> to
      <span>%EvalError.prototype%</span>.</p></li>
 
@@ -8575,11 +8595,11 @@ o.myself = o;</code></pre>
      <li><p>If <var>serialized</var>.[[Name]] is "URIError", then set <var>prototype</var> to
      <span>%URIError.prototype%</span>.</p></li>
 
-     <li><p>Let <var>message</var> be <var>serialized</var>.[[Message]].</p></li>
-
      <li><p>Set <var>value</var> to ! <span>ObjectCreate</span>(<var>prototype</var>, «
      [[ErrorData]] »).</p></li>
 
+     <li><p>Let <var>message</var> be <var>serialized</var>.[[Message]].</p></li>
+
      <li><p>Let <var>messageDesc</var> be <span>PropertyDescriptor</span>{ [[Value]]:
      <var>message</var>, [[Writable]]: true, [[Enumerable]]: false, [[Configurable]]: true
      }.</p></li>
@@ -8588,6 +8608,16 @@ o.myself = o;</code></pre>
      <span>OrdinaryDefineOwnProperty</span>(<var>value</var>, "<code data-x="">message</code>",
      <var>messageDesc</var>).</p></li>
 
+     <li><p>Let <var>errors</var> be <var>serialized</var>.[[Errors]].</p></li>
+
+     <li><p>Let <var>errorsDesc</var> be <span>PropertyDescriptor</span>{ [[Value]]:
+     <var>errors</var>, [[Writable]]: true, [[Enumerable]]: false, [[Configurable]]: true
+     }.</p></li>
+
+     <li><p>If <var>errors</var> is not undefined, then perform !
+     <span>OrdinaryDefineOwnProperty</span>(<var>value</var>, "<code data-x="">errors</code>",
+     <var>errorsDesc</var>).</p></li>
+
      <li><p>Any interesting accompanying data attached to <var>serialized</var> should be
      deserialized and attached to <var>value</var>.</p></li>
     </ol>