Re: [heycam/webidl] Disallow nullable Promise types. (#248)

annevk commented on this pull request.



> @@ -5741,7 +5741,7 @@ which just allows the additional value <emu-val>null</emu-val>
 to be a member of its set of values.  [=Nullable types=]
 are represented in IDL by placing a <span class="char">U+003F QUESTION MARK ("?")</span>
 character after an existing type.  The inner type must not
-be {{any}},
+be {{any}}, a [=Promise type=],
 another nullable type, or a [=union type=]

This looks incorrect. If Promise is non-nullable, the next cannot be "another nullable".

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