Angular 2 Form Validation Error “Unhandled Promise rejection: Cannot assign to a reference or variable!”

Answer 1

You should either change your component variable, or your template #name variable. They are colliding:

export class AppComponent {
  prettyname: string; // here
  username: string;
  email: string;
  password: string;
}

Also change your String to string

  

    Name
    
    

      

        Name is required
      
      

        Name must be at least 4 characters long
      
      

        Name cannot be more than 20 characters long
      
    
  
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