Lesson 12 - use-email-selection composable

src/composables/use-email-selection.js

@@ -0,0 +1,20 @@
+import { reactive } from 'vue';
+
+let emails = reactive(new Set())
+
+export const useEmailSelection = function(){
+  let toggle = function(email) {
+    if(emails.has(email)) {
+      emails.delete(email)
+    } else {
+      emails.add(email)
+    }
+  }
+
+  return {
+    emails,
+    toggle
+  }
+}
+
+export default useEmailSelection