Bug when block contains async helper

[Ndrou]

I have a bug when i put an async helper in a block :

    {@provide [optional params]}
      main block of dust
      {:block1}
       {@myAsyncHelper /}
    {/provide} 

It causes a problem with render method...

Any idea ?
Thanks in advance

[rragan]

Send me your async helper to allow more exploration if you can.

[Ndrou]

Below my helper ;)

 dust.helpers.tr = function (chunk, context, bodies, params) {
        var key = dust.helpers.tap(params.key, chunk, context);
        var ns = dust.helpers.tap(params.ns, chunk, context);
        var filter = dust.helpers.tap(params.filter, chunk, context);

        if (!key){
            return chunk.write('No translate key');
        }
        if (!ns){
            return chunk.write('No namespace');
        }

        var locale = context.get('_locals.lng');

        if (!locale){
            return chunk.write('locale not found');
        }
        if (!i18n || !i18n.t){
            return chunk.write('i18n not found');
        }

        return chunk.map(function(chunk){
            i18n.t(locale, ns, key, params).then(function(value){
                if (filter){
                    var filters = filter.split('|');

                    for(var filterItem in filters){
                        value = dust.filters[filters[filterItem]](value);
                    }
                }

                return chunk.end(value);
            }).catch(function(err){
                return chunk.end("");
            });
        });