Examine source code of Digital Shield: Tab Suspender & Tracker Blocker

{
  "manifest_version": 3,
  "name": "Digital Shield: Tab Suspender & Blocker",
  "short_name": "Digital Shield",
  "author": "Md. Anwarul Islam Shawn",
  "version": "18.0.4",
  "description": "Auto-suspend idle tabs to free RAM & speed up slow Chrome. Also blocks trackers, malware & data breaches. Free, no sign-up.",
  "permissions": [
    "storage",
    "activeTab",
    "webRequest",
    "declarativeNetRequest",
    "alarms",
    "cookies",
    "browsingData",
    "webNavigation",
    "tabs",
    "scripting"
  ],
  "host_permissions": [
    "*://*/*",
    "https://api.lemonsqueezy.com/*",
    "https://docs.google.com/*",
    "https://*.google.com/*"
  ],
  "icons": {
    "128": "images/icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "default_locale": "en",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "data_request_inspector.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "world": "MAIN"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "data_bridge.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "world": "ISOLATED"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "customFont.css"
      ],
      "js": [
        "fontLoader.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "seo_audit.js"
      ],
      "run_at": "document_end",
      "all_frames": false
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-cache-measure.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "element_hider.js"
      ],
      "css": [
        "element_hider.css"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "dark_mode.js"
      ],
      "run_at": "document_start"
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_balanced",
        "enabled": false,
        "path": "rules/rules_balanced.json"
      },
      {
        "id": "ruleset_max_security",
        "enabled": false,
        "path": "rules/rules_max_security.json"
      },
      {
        "id": "ruleset_work_mode",
        "enabled": false,
        "path": "rules/rules_work_mode.json"
      },
      {
        "id": "ruleset_sandbox",
        "enabled": false,
        "path": "rules/rules_sandbox.json"
      },
      {
        "id": "ruleset_https_upgrade",
        "enabled": false,
        "path": "rules/rules_https_upgrade.json"
      },
      {
        "id": "ruleset_malicious",
        "enabled": false,
        "path": "rules/rules_malicious.json"
      },
      {
        "id": "ruleset_fingerprinting",
        "matches": [
          "<all_urls>"
        ],
        "enabled": false,
        "run_at": "document_start",
        "world": "MAIN",
        "path": "rules/rules_fingerprinting.json"
      },
      {
        "id": "ruleset_utm_stripping",
        "enabled": false,
        "path": "rules/rules_utm_stripping.json"
      }
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "images/*.png",
        "dns_info.html",
        "dns_info.js",
        "notes.html",
        "notes.js",
        "passwords.html",
        "passwords.js",
        "pin_prompt.html",
        "pin_prompt.js",
        "security_setup.html",
        "security_setup.js",
        "tab_locker.css",
        "tab_locker.js",
        "settings.html",
        "dashboard.html",
        "games_menu.html",
        "request.html",
        "blocked.html",
        "registration.html",
        "thank_you.html",
        "payment_failed.html",
        "whats-new.html",
        "eye_spy_game.html",
        "eye_spy_game.js",
        "terms.html",
        "privacy_policy.html",
        "blocked.js",
        "thank_you_page.html",
        "bookmarks.html",
        "pin_prompt.html",
        "security_setup.html",
        "_locales/*/messages.json",
        "popup-blocker-main-world.js",
        "popup-blocker-restore.js",
        "inject.css",
        "customFont.css",
        "fontLoader.js",
        "data_request_inspector.js",
        "data_inspector_dashboard.html",
        "data_inspector_dashboard.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "mdanwarulislamshawn@gmail.com",
      "strict_min_version": "128.0"
    }
  }
}