auto-save-IDML.jsx

/* --------------------------------------
Auto Save IDML
by Aaron Troia (@atroia)
Modified Date: 2/17/26

Description: 
Startup Script that exports an IDML as soon as an INDD is opened
Note: This script goes in Startup Scripts folder not Scripts Panel folder.
-------------------------------------- */

#targetengine "afterOpen"

app.addEventListener('afterOpen', function() {
      try{
         if (isIDML(app.activeDocument)) {
            return; // continue, break, return
         } else {
            var IDML = String(app.activeDocument.fullName).replace(/\..+$/, "") + ".idml";
            IDML = String(new File(IDML)); 
            app.activeDocument.asynchronousExportFile(ExportFormat.INDESIGN_MARKUP, new File(IDML));
         }
      } catch (e) {
         alert(e.description);
      }


      // determin if file is INDD or IDML
      function isIDML(d) {
         try {
            app.activeDocument.fullName;
            return false;
         } catch(f) {
            var n = app.activeDocument.name.split(".");
            if (n[n.length-1] != "indd") {
                  return true;
            } 
         }
      }


});


// https://stackoverflow.com/questions/23255581/need-indesign-script-to-run-on-file-open
// https://community.adobe.com/questions-671/check-if-the-file-opened-is-a-idml-file-879853

// beforeOpen, afterOpen, beforeClose, afterClose