[V] $lib

const $lib: TypeSpecLibrary<{
  duplicate-id: {
     default: CallableMessage<["id"]>;
  };
  invalid-default: {
     default: CallableMessage<["type"]>;
  };
  unknown-scalar: {
     default: CallableMessage<["name"]>;
  };
}, JSONSchemaEmitterOptions, "JsonSchema" | "JsonSchema.extension">;

Internal: TypeSpec library definition