Examine source code of BlockGuard

{
  "manifest_version": 2,
  "name": "BlockGuard",
  "version": "1.2.2resigned1",
  "description": "Blockguard protects you against SCAM sites in the Blockchain/Crypto Space",
  "author": "LevCon International",
  "default_locale": "en",
  "icons": {
    "48": "icon/blockguard.48px.png"
  },
  "permissions": [
    "<all_urls>",
    "webRequest",
    "webRequestBlocking",
    "storage",
    "notifications"
  ],
  "background": {
    "persistent": true,
    "scripts": [
      "js/polyfill/edge.js",
      "js/polyfill/fetch.js",
      "js/error.js",
      "js/blockguard.js",
      "test/blockguard.test.js",
      "js/main.js"
    ]
  },
  "web_accessible_resources": [
    "doc/sample/forbidden.json",
    "doc/sample/forbidden.txt",
    "doc/sample/allowed.json",
    "doc/sample/blocked.json"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2fe96ac3-8b96-468d-97db-6c21bce1275f}"
    }
  }
}