Examine source code of Locker - Password Manager

{
  "version": "4.0.56",
  "name": "__MSG_extName__",
  "description": "__MSG_extDesc__",
  "homepage_url": "http://locker.io",
  "manifest_version": 2,
  "default_locale": "en",
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "__MSG_extName__",
    "default_icon": {
      "19": "icons/19.png",
      "38": "icons/38.png"
    }
  },
  "sidebar_action": {
    "default_panel": "index.html",
    "default_title": "__MSG_extName__",
    "default_icon": {
      "19": "icons/19.png",
      "38": "icons/38.png"
    }
  },
  "permissions": [
    "tabs",
    "contextMenus",
    "storage",
    "unlimitedStorage",
    "clipboardWrite",
    "activeTab",
    "http://*/*",
    "https://*/*"
  ],
  "optional_permissions": [],
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "background": {
    "scripts": [
      "static/js/background.js"
    ],
    "persistent": true
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+K",
        "mac": "Command+Shift+K"
      }
    },
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Alt+Shift+L",
        "mac": "Alt+Shift+L"
      }
    }
  },
  "content_scripts": [
    {
      "all_frames": true,
      "match_about_blank": true,
      "js": [
        "static/js/content.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "run_at": "document_start"
    },
    {
      "all_frames": false,
      "js": [
        "static/js/content-check-scam.js",
        "static/js/content-passkey.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "menu.html",
    "bar.html",
    "check-scam.html",
    "passkey.html",
    "icons/*",
    "static/js/inject.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "locker-extention-pro@cystack.net"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'self'"
}