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docs: model class inheritance with phantom types - #1465
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Replace private aliases and explicit coercions with phantom type parameters constrained by polymorphic variants. Keep the Animal, Mammal, and Dog JavaScript hierarchy and method bindings, allowing Dog values to call parent methods directly. Update the interface example and move the cross-link to the type parameter section.
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Point readers of polymorphic variant lower bounds to the practical inheritance binding example that combines them with phantom type parameters.
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The class inheritance guide currently requires explicit coercions to use parent methods. Use phantom type parameters constrained by polymorphic variants so
dog->Animal.getNameworks directly while parent values remain rejected byDog.bark.Keep the existing JavaScript
Animal → Mammal → Dogimplementation and@sendmethod bindings. Update the.resiexample, move the cross-link from Type Alias to Type Parameter, and link the polymorphic variant page's lower-bound section to the inheritance example.Validation: the inheritance and type pages pass example compilation, output checks, and MDX compilation. All changed pages pass formatting and the full relative-link check. A temporary fixture compiled and ran the exact documented bindings and JavaScript, verified direct inherited calls, and confirmed rejection of invalid subclass calls and missing parent tags.
Follow-up to #1462.