Examine source code of CCBlocker

{
  "manifest_version": 2,
  "version": "1.2.0",
  "name": "CCBlocker",
  "description": "Block any website",
  "author": "Carlos Jeurissen",
  "homepage_url": "https://apps.jeurissen.co/ccblocker",
  "developer": {
    "name": "Carlos Jeurissen",
    "url": "https://apps.jeurissen.co/"
  },
  "content_security_policy": "default-src 'none'; child-src 'none'; connect-src 'none'; font-src 'none'; frame-src 'none'; manifest-src 'none'; media-src 'none'; object-src 'none'; worker-src 'none'; img-src 'none'; script-src 'self'; script-src-elem 'self'; script-src-attr 'none'; style-src 'none'; style-src-elem 'none'; style-src-attr 'none'; base-uri 'none'; form-action 'none'; frame-ancestors 'none'; block-all-mixed-content; upgrade-insecure-requests",
  "browser_specific_settings": {
    "gecko": {
      "id": "ccblocker@carlosjeurissen.com"
    }
  },
  "externally_connectable": {
    "ids": [],
    "accepts_tls_channel_id": false
  },
  "icons": {
    "16": "/images/icon.svg",
    "32": "/images/icon.svg",
    "48": "/images/icon.svg",
    "96": "/images/icon.svg",
    "128": "/images/icon.svg",
    "256": "/images/icon.svg"
  },
  "optional_permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://*/**"
  ],
  "background": {
    "page": "/views/background.html",
    "persistent": false
  },
  "options_ui": {
    "page": "/views/options.html",
    "open_in_tab": true,
    "browser_style": false
  },
  "commands": {
    "_execute_browser_action": {}
  },
  "options_page": "/views/options.html",
  "browser_action": {
    "default_icon": {
      "16": "/images/icon.svg",
      "19": "/images/icon.svg",
      "24": "/images/icon.svg",
      "32": "/images/icon.svg",
      "38": "/images/icon.svg"
    }
  }
}