client/src/data/userCheck.js

   1 export function checkNameEmail(o) {
   2   if (typeof o.name === "string") {
   3     if (o.name.length == 0) return "Empty name";
   4     if (!o.name.match(/^[\w]+$/)) return "Name: alphanumerics and underscore";
   5   }
   6
   7   if (typeof o.email === "string") {
   8     if (o.email.length == 0) return "Empty email";
   9     if (!o.email.match(/^[\w.+-]+@[\w.+-]+$/)) return "Invalid email";
  10   }
  11
  12   return "";
  13 }