debian-mirror-gitlab/app/assets/javascripts/diffs/utils/preferences.js

import Cookies from 'js-cookie';
import { DIFF_FILE_BY_FILE_COOKIE_NAME, DIFF_VIEW_FILE_BY_FILE } from '../constants';

export function fileByFile(pref = false) {
  const cookie = Cookies.get(DIFF_FILE_BY_FILE_COOKIE_NAME);

  // use the cookie first, if it exists
  if (cookie) {
    return cookie === DIFF_VIEW_FILE_BY_FILE;
  }

  return pref;
}