Examine source code of LinkListSidebar

{
  "manifest_version": 2,
  "name": "LinkList",
  "version": "1.2resigned1",
  "description": "View &search all links on the web page",
  "homepage_url": "https://github.com/src-r-r/firefox-linklist",
  "icons": {
    "48": "icons/linklist-48.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "http://*/",
    "https://*/",
    "file://*/"
  ],
  "content_scripts": [
    {
      "js": [
        "sidebar/jquery-3.2.1.min.js",
        "ext/onload.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "sidebar_action": {
    "default_icon": "icons/linklist-32.png",
    "default_title": "Link List",
    "default_panel": "sidebar/index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ee60709f-3671-4eca-b94b-8070fadadcfa}"
    }
  }
}