Examine source code of Youtube BS Block

{
  "manifest_version": 2,
  "name": "Youtube BS Block",
  "version": "0.0.1",
  "author": "Jirka Justra",
  "description": "Block selected channels from search results and home page.",
  "applications": {
    "gecko": {
      "id": "youtube-bs-block@jirka-justra.cz"
    }
  },
  "icons": {
    "512": "youtube-bs-block.svg"
  },
  "browser_action": {
    "default_icon": {
      "512": "youtube-bs-block.svg"
    },
    "default_title": "Youtube BS Block",
    "browser_style": false
  },
  "permissions": [
    "storage",
    "unlimitedStorage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  }
}