Set internal linkage and keeping default visibility for anonymous functions

testdata/generics/testa/testa.go

@@ -0,0 +1,20 @@
+package testa
+
+import (
+	"github.com/tinygo-org/tinygo/testdata/generics/value"
+)
+
+func Test() {
+	v := value.New(1)
+	vm := value.Map(v, Plus100)
+	vm.Get(callback, callback)
+}
+
+func callback(v int) {
+	println("value:", v)
+}
+
+// Plus100 is a `Transform` that adds 100 to `value`.
+func Plus100(value int) int {
+	return value + 100
+}