title: Getting an error "await is a reserved word", while running meteor a application
body: <p>I'm using Crypto2(<a href="https://www.npmjs.com/package/crypto2" rel="nofollow noreferrer">https://www.npmjs.com/package/crypto2</a>) library for Public/Private key production . I'm producing these keys while registering some patient as in code below. </p>
  
  <pre><code>Template.patient_register.events({
    'submit form': function(event, template) {
        event.preventDefault();
       const {privateKey,publicKey} = await crypto2.createKeyPair();
        var _email           = event.target.registerEmail.value;
        var _password        = event.target.registerPassword.value;
        var _disease_group   = event.target.registerDisease_Group.value;
        var _account_type    = event.target.registerAccount_Type.value;
        var _publickey       =  await crypto2.readPublicKey('key.pub');
  
        console.log("Public Key Is:::"+_publickey);
        console.log("Private Key Is:::"+await crypto2.readPrivateKey('key.pem'));
        var newAccount = {
           email         :  _email,
           password      :  _password,
           disease_group :  _disease_group,
           account_type  :  _account_type,
           public_Key    :  _publickey
        };
  
        Accounts.createUser(newAccount, function(err) {
         if (err) {
         ....................
  
         } else {
          .....................
         }
        });
  
        template.find("form").reset();
  
     }
  });
  </code></pre>
  
  <p>But when I run this code it fails with an error "await is a reserved word". Please help me with this.</p>