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Specify PropertyDescriptor of @@toStringTag symbol #513

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Jan 19, 2018
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Specify PropertyDescriptor of @@toStringTag symbol #513

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13 changes: 5 additions & 8 deletions index.bs
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Expand Up @@ -6706,15 +6706,12 @@ of objects defined in this section is {{%ObjectPrototype%}}.

Some objects described in this section are defined to have a <dfn id="dfn-class-string" export>class string</dfn>,
which is the string to include in the string returned from Object.prototype.toString.
If an object has a class string, then the object must,
at the time it is created, have a property whose name is the {{@@toStringTag}} symbol
and whose value is the specified string.

<p class="issue">
Should define whether {{@@toStringTag}} is writable, enumerable and configurable.
All {{@@toStringTag}} properties in the ECMAScript spec are non-writable and non-enumerable,
and configurable.
</p>
If an object has a class string |classString|, then the object must,
at the time it is created, have a property whose name is the {{@@toStringTag}} symbol
with PropertyDescriptor{\[[Writable]]: <emu-val>false</emu-val>,
\[[Enumerable]]: <emu-val>false</emu-val>, \[[Configurable]]: <emu-val>true</emu-val>,
\[[Value]]: |classString|}.

<p id="ecmascript-abstractop">
Algorithms in this section use the conventions described in [=ECMA-262 §5.2|ECMA-262 §5.2
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