fix V.js

vlib/builtin/js/array.v

@@ -6,7 +6,7 @@ module builtin
 
 import strings
 
-struct array {
+pub struct array {
 pub:
 	data         voidptr
 	len          int

vlib/builtin/js/map.v

@@ -6,7 +6,7 @@ module builtin
 
 import strings
 
-struct map {
+pub struct map {
 	obj voidptr
 }
 

vlib/builtin/js/string.v

@@ -4,7 +4,7 @@
 
 module builtin
 
-struct string {
+pub struct string {
 //mut:
 	//hash_cache int
 pub:

vlib/compiler/fn.v

@@ -1310,7 +1310,7 @@ fn (p mut Parser) dispatch_generic_fn_instance(f mut Fn, ti TypeInst) {
 
 	// TODO this is done to prevent a crash as a result of this not being
 	// properly initialised. This is a bug somewhere futher upstream
-	f.defer_text = []string {}
+	f.defer_text = []string
 
 	old_args := f.args
 	new_types := p.replace_type_params(f, ti)