[js] Stub nqp::flushfh.

Author: pmurias

src/vm/js/QAST/Compiler.nqp

@@ -573,6 +573,7 @@ class QAST::OperationsJS {
     add_simple_op('readlinefh', $T_STR, [$T_OBJ], :sideffects);
     add_simple_op('readallfh', $T_STR, [$T_OBJ], :sideffects);
     add_simple_op('printfh', $T_OBJ, [$T_OBJ, $T_STR], :sideffects);
+    add_simple_op('flushfh', $T_OBJ, [$T_OBJ], :sideffects);
     add_simple_op('closefh', $T_OBJ, [$T_OBJ], :sideffects);
     add_simple_op('setinputlinesep', $T_OBJ, [$T_OBJ, $T_STR], :sideffects);
 
@@ -1253,6 +1254,7 @@ class QAST::OperationsJS {
 
     add_simple_op('iseq_I', $T_INT, [$T_OBJ, $T_OBJ]);
 
+
     # bigint arithmetic operators operators
 
     add_simple_op('mul_I', $T_OBJ, [$T_OBJ, $T_OBJ, $T_OBJ]);

src/vm/js/nqp-runtime/io.js

@@ -307,6 +307,11 @@ op.getstdout = function() {
   return new Stdout();
 };
 
+op.flushfh = function(fh) {
+  // STUB - will require custom io to implement
+  return fh;
+};
+
 function Stdin() {
 }