Examine source code of QuestSkipper

{
  "manifest_version": 2,
  "name": "QuestSkipper",
  "version": "1.0",
  "description": "skips discord video quests",
  "icons": {
    "48": "questskipper-48.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "questskipper-48.png",
    "default_title": "QuestSkipper",
    "default_popup": "index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://discord.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3af31148-67ec-404e-95c9-bffdc277d33d}"
    }
  }
}