Adobe Illustrator script for batch exporting eps files

export-eps.js

// script.name = export-eps.js;
// script.description = opens and exports Ai files as EPS (Folder Batch);
// script.requirements = none
//
// based on:
// http://forums.adobe.com/thread/1224874?tstart=0
// https://stackoverflow.com/questions/16541273/illustrator-script-for-exporting-as-eps
//
// see EPSSaveOptions reference e.g. here:
// https://wwwimages2.adobe.com/content/dam/acom/en/devnet/illustrator/pdf/Illustrator_Scripting_Reference_JavaScript_2015.pdf

var extension = ".ai";
if (app.documents.length > 0)  {
    var folder = Folder(app.activeDocument.path).selectDlg("Select Source Folder...");
}
else {
    var folder = Folder.selectDialog("Select Source Folder...\nHint: Open a document to set default path"); // select folder
}
if (folder==null) {
    alert("Good Bye");
}
else {
    var files = find_files (folder, [extension]);
    var fileCount = files.length; // count them
    if (fileCount>0) {
        for (i=0; i<fileCount; i++) {
            var idoc = app.open(files[i]);
            var saveOpts = new EPSSaveOptions();
          
            saveOpts.cmykPostScript = true;
            saveOpts.compatibility = Compatibility.ILLUSTRATOR16;
            saveOpts.embedAllFonts = false;
            saveOpts.embedLinkedFiles = false;
            saveOpts.includeDocumentThumbnails = false;
            saveOpts.postScript = EPSPostScriptLevelEnum.LEVEL3;
            saveOpts.preview = EPSPreview.None;
            saveOpts.saveMultipleArtboards = false;

            idoc.saveAs( files[i], saveOpts );
            idoc.close();
        }
        alert(fileCount + ' file(s) processed');
    }
    else {
        alert("There are no Illustrator " + extension + " files in this folder.");
    }
}
// recurse subfolders - Peter Kharel
function find_files (dir, mask_array){
    var arr = [];
    for (var i = 0; i < mask_array.length; i++){
        arr = arr.concat (find_files_sub (dir, [], mask_array[i].toUpperCase()));
    }
    return arr;
}
function find_files_sub (dir, array, mask){
    var f = Folder (dir).getFiles ( '*.*' );
    for (var i = 0; i < f.length; i++){
        if (f[i] instanceof Folder){
            find_files_sub (f[i], array, mask);
        } else if (f[i].name.substr (-mask.length).toUpperCase() == mask){
            array.push (f[i]);
        }
    }
    return array;
}

This is a great script for creating eps with embedded fonts and art (I switched to "true" for Lines 32 & 34). There is a typo in Line 12. The double quotes around file type should be single.