Vendor main dependencies.

vendor/github.com/BurntSushi/ty/tyvars.go

@@ -0,0 +1,28 @@
+package ty
+
+import (
+	"reflect"
+)
+
+// TypeVariable is the underlying type of every type variable used in
+// parametric types. It should not be used directly. Instead, use
+//
+//	type myOwnTypeVariable TypeVariable
+//
+// to create your own type variable. For your convenience, this package
+// defines some type variables for you. (e.g., `A`, `B`, `C`, ...)
+type TypeVariable struct {
+	noImitation struct{}
+}
+
+// tyvarUnderlyingType is used to discover types that are type variables.
+// Namely, any type variable must be convertible to `TypeVariable`.
+var tyvarUnderlyingType = reflect.TypeOf(TypeVariable{})
+
+type A TypeVariable
+type B TypeVariable
+type C TypeVariable
+type D TypeVariable
+type E TypeVariable
+type F TypeVariable
+type G TypeVariable