simplify createIcon

debug/simplemde.js

@@ -16750,11 +16750,10 @@ function _inherits(subClass, superClass) { if (typeof superClass !== "function"
  */
 var createIcon = function createIcon() {
 	var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
-	var enableTooltips = arguments[1];
+	var enableTooltips = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
 	var shortcuts = arguments[2];
 
 	var el = document.createElement("a");
-	enableTooltips = enableTooltips == undefined ? true : enableTooltips;
 
 	if (options.title && enableTooltips) {
 		el.title = createTootlip(options.title, options.action, shortcuts);

src/js/simplemde.js

@@ -27,9 +27,8 @@ import {
 /**
  * Create icon element for toolbar.
  */
-const createIcon = (options = {}, enableTooltips, shortcuts) => {
+const createIcon = (options = {}, enableTooltips = true, shortcuts) => {
 	let el = document.createElement("a");
-	enableTooltips = (enableTooltips == undefined) ? true : enableTooltips;
 
 	if(options.title && enableTooltips) {
 		el.title = createTootlip(options.title, options.action, shortcuts);