2.1.5 [W3C-WEBIDL1] Section 4.6.3 Dictionary constructors
V0003: Dictionary constructors are not supported
The specification states:
4.6.3 Dictionary constructors For every dictionary type that has one or more [Constructor] extended attributes and which is exposed in a given ECMAScript global environment, a corresponding property must exist on the ECMAScript environment's global object. The name of the property is the identifier of the dictionary, and its value is a function object called the dictionary constructor.
All document modes (All versions)
Dictionary constructors are not supported.