Examine source code of Relay Folders

{
  "manifest_version": 2,
  "name": "Relay Folders",
  "version": "1.2",
  "description": "Allows you to use folders on the Firefox Relay page (https://relay.firefox.com/accounts/profile/).",
  "homepage_url": "https://github.com/Samuel-Risner/firefox-relay-folders",
  "icons": {
    "48": "icon.png",
    "96": "icons/icon-96.png"
  },
  "browser_action": {
    "default_icon": "icons/icon-96.png",
    "default_title": "Relay Folders",
    "default_popup": "html/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://relay.firefox.com/accounts/profile/"
      ],
      "js": [
        "js/dist/content.js"
      ],
      "css": [
        "css/dist/content.css"
      ]
    }
  ],
  "permissions": [
    "tabs",
    "storage"
  ],
  "background": {
    "scripts": [
      "js/dist/background.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c108ca22-74c3-45c2-b2c3-9237b2026907}"
    }
  }
}