Change font family for all text layers in Sketch

Change Font.sketchplugin

// Change font (ctrl a)
var font_name,
select_one_textlayer = false;
 
function check_layer(layer){
  log("Checking layer " + layer + " of klass: " + [layer class])
  switch ([layer class]) {
    case MSTextLayer:
      log("Found text layer!")
      layer.setFontPostscriptName(font_name);
      break;
    case MSPage:
    case MSLayerGroup:
    case MSArtboardGroup:
      var sublayers = [layer layers];
      log("This is a group/artboard/page with " + [sublayers length] + " sublayers")
      for(var i=0; i < [sublayers length]; i++) {
        var sublayer = sublayers[i];
        check_layer(sublayer);
      }
      break;
  }
}
 
log("################################################################")

//If only select one MSTextLayer use its font name
//if (selection && [selection length] === 1 && [selection[0] fontPostscriptName]) { //[selection[0] fontPostscriptName] <- ERROR :S
if (selection && [selection length] === 1) {
  var layer = selection[0];
  if ([layer class] === MSTextLayer) {
    font_name = [layer fontPostscriptName];
    select_one_textlayer = true;
  }
}

if (!select_one_textlayer) {
  font_name = [doc askForUserInput:"Font name:" initialValue:"Arial"];
}


// Use selection, if any
if(selection && [selection length] && !select_one_textlayer){
  for (var i = 0; i < [selection length]; i++) {
    check_layer(selection[i]);
  }
} else {
  // Otherwise, loop trough pages, artboards & layers
  var pages = [doc pages];
  for (var i = 0; i < [pages length]; i++) {
    var current_page = pages[i];
    if ([[current_page artboards] length]) {
      log("Traversing artboards")
      for (var i = 0; i < [[current_page artboards] length]; i++) {
        var artboard = [current_page artboards][i]
        check_layer(artboard)
      }
    } else {
      log("Page has no artboards")
      check_layer(current_page)
    }
  }
}