new firefox in webpack

webpack/mailgo.direct.ts

@@ -1,6 +0,0 @@
-// webpack > dist/mailgo.direct.js
-// useful for some addons like Firefox
-
-import mailgo from "../src/mailgo";
-
-mailgo();

webpack/mailgo.firefox.ts

@@ -0,0 +1,9 @@
+// webpack > dist/mailgo.firefox.js
+// script to add in Firefox addon
+
+import mailgo from "../src/mailgo";
+
+// check if mailgo HTML is already present in the page
+let mailgoExists = !!document.getElementById("mailgo");
+
+if (!mailgoExists) mailgo();