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Chris Tate
6115135d96
A constructor's new.target dispatch skipped generic class families, so a generic subclass instantiated only in a body lowered later answered with the base's name, and `new.target === Base` held for its instances. A family now has its own arm, tested by its instanceof interval, which holds every instantiation: `new.target.name` reads the family's name and comparisons with a program class are false. Under an instantiation, the generic subclasses of its family are candidates too. `new.target` as a value refuses generic subclasses, which have no common class value. `new.target.name` reads a class's own static `name` field, which replaces its name (a subclass has its own name); a static method `name` or a non-string field is refused.