Multi configuration

gistfile1.txt

{
  "tabs": [
    {
      "title": "Gmail",
      "url": "https://mail.google.com/",
      "customJS": [
        "file:///Users/neilio/Dropbox/Documents/Software/Multi/gapps.js"
      ]
    },
    {
      "title": "Slack",
      "url": "https://freshbooks.slack.com/"
    },
    {
      "title": "GCal",
      "url": "https://calendar.google.com/",
      "customJS": [
        "file:///Users/neilio/Dropbox/Documents/Software/Multi/gapps.js"
      ]
    },
    {
      "title": "GDrive",
      "url": "https://drive.google.com/drive/u/0/my-drive",
      "customJS": [
        "file:///Users/neilio/Dropbox/Documents/Software/Multi/gapps.js"
      ]
    },
    {
      "title": "Jira",
      "url": "https://2ndsiteinc.atlassian.net/"
    },
    {
      "title": "Polymail",
      "url": "https://app.polymail.io/"
    },
    {
      "title": "Miro",
      "url": "https://miro.com/"
    }
  ],
  "sideBySide": false,
  "alwaysNotify": true,
  "openNewWindowsWith": "com.apple.Safari",
  "openNewWindowsInBackground": true
}

Here's the JS I'm linking to:

(() => {
const listener = e => e.stopPropagation();
const query = () => document.querySelectorAll('a[target=_blank]').forEach(a => {
a.removeEventListener('click', listener);
a.addEventListener('click', listener, true);
});
query();
setInterval(query, 400); // wait time between DOM queries, in milliseconds
})();