init commit

core/utils.js

@@ -0,0 +1,10 @@
+exports.validateEmail = (email) => {
+  const re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
+
+  const reStartAndEnd = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}/g;
+
+  if (re.test(email) && reStartAndEnd.test(email)) {
+    return true;
+  }
+  return false;
+};