private class CustomBuiltinFunctions : BuiltinFunctions {
    public CustomBuiltinFunctions() {
        ArrayFunctions array = (ArrayFunctions)this["array"];
        array.Remove("sort");
        array.Import("sort", new Func<TemplateContext, SourceSpan, object, string, IEnumerable>(Sort));
    }

    private static IEnumerable Sort(TemplateContext context, SourceSpan span, object list, string? member = null) {
        if (list == null) {
            return new ScriptRange();
        }

        IEnumerable? enumerable = list as IEnumerable;

        if (enumerable == null)
            return new ScriptArray(1) { list };

        var items = enumerable.Cast<object>();
        if (!items.Any())
            return new ScriptArray();

        if (string.IsNullOrEmpty(member)) {
            items = items.OrderBy(x => x);
        } else {
            items = items.OrderBy(target => {
                IObjectAccessor accessor = context.GetMemberAccessor(target);

                if (!accessor.TryGetValue(context, span, target, member, out object value)) {
                    context.TryGetMember?.Invoke(context, span, target, member, out value);
                }

                return value;
            });
        }

        return new ScriptArray(items);
    }
}