[js] Add op signatures for ops that will the runtime implementation filled in later

Author: pmurias

src/vm/js/Operations.nqp

@@ -1694,6 +1694,12 @@ class QAST::OperationsJS {
     add_simple_op('semtryacquire', $T_INT, [$T_OBJ], :side_effects);
     add_simple_op('semrelease', $T_OBJ, [$T_OBJ], :side_effects);
 
+    add_simple_op('unipropcode', $T_INT, [$T_STR]);
+    add_simple_op('getuniprop_str', $T_STR, [$T_INT, $T_INT]);
+    add_simple_op('getuniprop_bool', $T_INT, [$T_INT, $T_INT]);
+    add_simple_op('getuniprop_int', $T_INT, [$T_INT, $T_INT]);
+    add_simple_op('matchuniprop', $T_INT, [$T_INT, $T_INT, $T_INT]);
+    add_simple_op('unipvalcode', $T_INT, [$T_INT, $T_STR]);
     add_simple_op('getuniname', $T_STR, [$T_INT]);
 }