applyNew

gistfile1.js

var PROTO_TYPE = {
    '[object String]'  : String, 
    '[object Number]'  : Number, 
    '[object Boolean]' : Boolean
};

function applyNew(f, a) {
    var construct = PROTO_TYPE[{}.toString.call(f.prototype)];
    if (construct) {
        return new construct(a[0]);
    }
    function F() {
        return f.apply(this, a);
    };
    F.prototype = f.prototype;
    return new F;
}

//Example
function Foo(a, b, c, d, e) {
    print([
        'a: ' + a, 
        'b: ' + b,
        'c: ' + c, 
        'd: ' + d,
        'e: ' + e
    ].join('\n'));
    
    print(this.method());
}

Foo.prototype.method = function () {
    return 'method';
};

var obj = applyNew(Foo, [1, 2, 3, 4, 5]);
print(obj instanceof Foo); //true