Save file in wysiwyg editor

Expected behavior Hi, I have a problem with wysiwyg editor on bootstrap. Because I need to save a file in the editor, I inserted a save button in the editor and included the FileSaver.js library in the index page.

Actual behavior When I press the save button to save the contents of the textbox the following error is displayed: Uncaught ReferenceError: saveDynamicDataToFile is not defined at HTMLButtonElement.onclick (index.html:62)

Resources (screenshots, code snippets etc.)

/*new button save in toolbar in wysiwyg.js*/ 
<li><button onclick="saveDynamicDataToFile();" data-action="save" data-tooltip data-placement="bottom" title="${this.options.translations.save}"><i class="fas fa-save"></i></button></li>

/*my function to save a file in wysiwyg.js*/ 
    function saveDynamicDataToFile() {
    var userInput = document.getElementById("hypertext").value;
    var blob = new Blob([userInput], { type: "text/plain;charset=utf-8" });
    saveAs(blob, "dynamic.txt");
    }

      /*inclusions in index.html*/ 
    <script type="text/javascript" src="js/jquery-3.4.1.min.js"></script>
    <script type="text/javascript" src="js/FileSaver.min.js"></script>  
  <!-- Bootstrap tooltips -->
  <script type="text/javascript" src="js/popper.min.js"></script>
  <!-- Bootstrap core JavaScript -->
  <script type="text/javascript" src="js/bootstrap.min.js"></script>
  <!-- MDB core JavaScript -->
  <script type="text/javascript" src="js/mdb.min.js"></script>
  <script type="text/javascript" src="js/wysiwyg.js"></script>