Сергей Соколов

const longString = '37.587218 55.752658';
const [oneValue, twoValue] = longString.split(' ');

1. Мутирование переданного массива
   
2. Для массивов нулевой и единичной длины результат не строка
   
3. Многовато if'ов, слишком сложно
   

const range = ([...arr]) => arr
  .sort((a, b) => a - b)
  .reduce((acc, n, i, a) => (
    (n === a[i - 1] + 1) || acc.push([ n ]),
    acc[acc.length - 1][1] = n,
    acc
  ), [])
  .map(([ a, b ]) => a === b ? a : `${a}-${b}`)
  .join(', ');

const range = arr => ''.concat(...arr
  .slice()
  .sort((a, b) => a - b)
  .reduce((acc, n, i, a) => (
    n !== a[i - 1] + 1 && acc.push(i ? `, ${n}` : n),
    n === a[i - 1] + 1 && n !== a[i + 1] - 1 && acc.push(`-${n}`),
    acc
  ), [])
);

function randomCall(items) {
  const max = items.reduce((acc, n) => acc + n.ratio, 0);

  return function(...args) {
    const val = Math.random() * max;
    for (let sum = 0, i = 0; i < items.length; i++) {
      sum += items[i].ratio;
      if (sum > val) {
        return items[i].func.apply(this, args);
      }
    }
  };
}

const func = randomCall([
  { func: func1, ratio: 1 },
  { func: func2, ratio: 2 },
  { func: func3, ratio: 3 },
  { func: func4, ratio: 4 },
]);

location = /api/servertime {
    access_log off;
    rewrite ^ /index.php break;
    include fastcgi.conf;
    fastcgi_pass php;
}

location ~ \.php$ {
    if ($request_uri ~ "^/api/servertime") {
        access_log off;
    }
    include fastcgi.conf;
    fastcgi_pass php;
}

map $request_uri $loggable {
    default            1;
    ~^/api/servertime  0;
}
server {
    # ...
    root   /var/www/lumen/public;    
    try_files $uri $uri/ /index.php$is_args$args;
    # ...
    location ~ \.php$ {
      access_log /var/log/nginx/access.log combined if=$loggable;
      include fastcgi.conf;
      fastcgi_pass php;
    }
}