Examine source code of DevTools Companion for Angular

{
  "manifest_version": 3,
  "name": "DevTools Companion for Angular",
  "version": "1.1.5",
  "description": "Deep introspection for Angular apps — Component Tree, HTTP Monitor, Store, Router, DI, Performance, and Source Maps.",
  "author": "DevTools Companion Contributors",
  "homepage_url": "https://github.com/devtools-companion/devtools-companion-angular",
  "browser_specific_settings": {
    "gecko": {
      "id": "devtools-companion-angular@devtools-companion.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "activeTab",
    "devtools",
    "storage",
    "scripting",
    "webRequest"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "devtools_page": "devtools/devtools.html",
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_scripts/inspector.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "inject/ng-bridge.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}