Examine source code of VLIVE Enhancer

{
  "manifest_version": 2,
  "name": "VLIVE Enhancer",
  "version": "1.0.4",
  "description": "Adds download buttons on vlive.tv",
  "author": "Mikhail Dydolov",
  "homepage_url": "https://gitlab.com/mikhaildyd/vlive-enhancer",
  "content_scripts": [
    {
      "matches": [
        "https://www.vlive.tv/*"
      ],
      "js": [
        "vlive.js"
      ],
      "css": [
        "style.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "downloads"
  ]
}