fix drop ifem

Author: jumptuner

lib/index.js

@@ -518,8 +518,8 @@ carbone.addFormatters(require("../formatters/number.js"));
 carbone.addFormatters(require("../formatters/string.js"));
 carbone.addFormatters({
   drop: function (data, args) {
-    // Check if the first argument is 'slide' and if the data is empty
-    if (args[0] === "slide" && (!data || data.trim() === "")) {
+    // Check if the first argument is 'slide' and if the data is not empty
+    if (args[0] === "slide" && data && data.trim() !== "") {
       // Set a flag in the context to indicate that the slide should be dropped
       this.isHidden = true;
     }