EF Database-First but make sure code-first migrations are not ahead

RequireDatabaseToBeUpToDate.cs

    public class RequireDatabaseToBeUpToDate<TContext, TMigrationsConfiguration> : IDatabaseInitializer<TContext>
        where TContext : DbContext 
        where TMigrationsConfiguration : DbMigrationsConfiguration, new()
    {
        public void InitializeDatabase(TContext context)
        {
            var migrator = new DbMigrator(new TMigrationsConfiguration());
            var migrations = migrator.GetPendingMigrations().ToList();
            if (migrations.Any())
            {
                var message = "There are pending migrations that must be applied (via a script or using migrate.exe) before the application is started.\r\n" +
                    $"Pending migrations:\r\n{string.Join("\r\n", migrations)}";
                throw new MigrationsPendingException(message);
            }
        }
    }