Examine source code of BNTV

{
  "browser_specific_settings": {
    "gecko": {
      "id": "BNTV@extension",
      "strict_min_version": "65.0"
    }
  },
  "manifest_version": 2,
  "name": "BNTV",
  "version": "3.1.4",
  "description": "Enhances Nimo with new features,emotes and more.",
  "icons": {
    "16": "icons/BNTV16.png",
    "48": "icons/BNTV48.png",
    "128": "icons/BNTV128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.nimo.tv/*"
      ],
      "js": [
        "scripts/BNTV_MentionChat.js",
        "scripts/BNTV_MentionEmote.js",
        "scripts/BNTV_OtherScripts.js",
        "scripts/BNTV_Script.js"
      ],
      "css": [
        "styles/BNTV_Style_tooltip.css",
        "styles/BNTV_Style.css",
        "styles/BNTV_Style_CB.css"
      ],
      "run_at": "document_end"
    }
  ]
}