Karabiner-Elements complex modifications

slack.json

{
  "title": "slack",
  "rules": [
    {
      "description": "cmd + n :Move next channel or DM in slack (unread if shift is pressed).",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "n",
            "modifiers": {
              "mandatory": [
                "command"
              ],
              "optional": [
                "shift"
              ]
            }
          },
          "to": [
            {
              "key_code": "down_arrow",
              "modifiers": [
                "option"
              ]
            }
          ],
          "conditions": [
            {
              "type": "frontmost_application_if",
              "bundle_identifiers": [
                "^com\\.tinyspeck\\.slackmacgap$"
              ]
            }
          ]
        }
      ]
    },
    {
      "description": "cmd + p :Move previous channel or DM in slack (unread if shift is pressed).",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "p",
            "modifiers": {
              "mandatory": [
                "command"
              ],
              "optional": [
                "shift"
              ]
            }
          },
          "to": [
            {
              "key_code": "up_arrow",
              "modifiers": [
                "option"
              ]
            }
          ],
          "conditions": [
            {
              "type": "frontmost_application_if",
              "bundle_identifiers": [
                "^com\\.tinyspeck\\.slackmacgap$"
              ]
            }
          ]
        }
      ]
    }
  ]
}