Examine source code of Btbinge追剧

{
  "manifest_version": 2,
  "name": "Btbinge",
  "version": "1.2.3",
  "description": "Adds a list to all binge TV series matching btbtt12.com.",
  "icons": {
    "48": "icons/btbinge-48.png",
    "96": "icons/btbinge-96.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "*://www.btbtt12.com/*"
  ],
  "browser_action": {
    "default_icon": {
      "19": "icons/btbinge-19.png",
      "38": "icons/btbinge-38.png"
    },
    "default_title": "Bt Binge",
    "default_popup": "popup/bingelist.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "btbtt@eionz.com",
      "strict_min_version": "100.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.btbtt12.com/forum-index-fid-*"
      ],
      "js": [
        "btbinge.js"
      ]
    }
  ]
}