Function for_in

lib/parse-js.js:950–956

(init)

    };

    function for_in(init) {
        var lhs = init[0] == "var" ? as("name", init[1][0]) : init;
        next();
        var obj = expression();
        expect(")");
        return as("for-in", init, lhs, obj, in_loop(statement));
    };

    var function_ = function(in_statement) {
        var name = is("name") ? prog1(S.token.value, next) : null;