Variable scope issue

[kLabz]

When using if without brackets, the scope stays the same and variables can be shadowed:

var expr = '
	var a = "test";
	if (true) var a = 42;
	return a;
';

var parser = new hscript.Parser();
var ast = parser.parseString(expr);
var interp = new hscript.Interp();
trace(interp.execute(ast)); // 42

Works as expected when using brackets.