h5 doesn't test delegate correctly

[sake402]

Hi

I have this piece of c# code where text is object type

public string GetText()
{
    if (text is Delegate d)
        return d?.Call()?.ToString();
    return text?.ToString();
}

Here is the generated code, that doesnt test for Delegate at all, hust checked if text is not null

GetText: function () {
                var $t;
                var d;
                if (!H5.staticEquals(((d = this.text)), null)) {
                    return !H5.staticEquals(d, null) && ($t = d.call()) != null ? H5.toString($t) : null;
                }
                return this.text != null ? H5.toString(this.text) : null;
            }

I would have expected

GetText: function () {
                var $t;
                var d;
                if (!H5.staticEquals(((d = this.text)), null) && H5.isFunction(d)) {
                    return !H5.staticEquals(d, null) && ($t = d.call()) != null ? H5.toString($t) : null;
                }
                return this.text != null ? H5.toString(this.text) : null;
            }