Set internal linkage and keeping default visibility for anonymous functions

testdata/generics/testb/testb.go

@@ -0,0 +1,20 @@
+package testb
+
+import (
+	"github.com/tinygo-org/tinygo/testdata/generics/value"
+)
+
+func Test() {
+	v := value.New(1)
+	vm := value.Map(v, Plus500)
+	vm.Get(callback, callback)
+}
+
+func callback(v int) {
+	println("value:", v)
+}
+
+// Plus500 is a `Transform` that adds 500 to `value`.
+func Plus500(value int) int {
+	return value + 500
+}