How to fast get a list of all text layers?

alert(getTextLayerIDs());
function getTextLayerIDs(){   
   var ref = new ActionReference();   
   ref.putProperty( charIDToTypeID('Prpr') , charIDToTypeID('NmbL'));
   ref.putEnumerated( charIDToTypeID('Dcmn'), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );   
   var count = executeActionGet(ref).getInteger(charIDToTypeID('NmbL')) +1;   
   var Texts=[];  
try{  
    activeDocument.backgroundLayer;  
var i = 0; }catch(e){ var i = 1; };  
   for(i;i<count;i++){   
       if(i == 0) continue;  
        ref = new ActionReference();   
        ref.putIndex( charIDToTypeID( 'Lyr ' ), i );  
        var desc = executeActionGet(ref);    
        var ID = desc.getInteger(stringIDToTypeID( 'layerID' ));  
         if( desc.hasKey( stringIDToTypeID( 'textKey' ))) Texts.push(ID); 
        }
    return Texts
};