Examine source code of Vue.js devtools

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Vue.js devtools",
  "version": "6.5.0",
  "version_name": "6.5.0",
  "description": "Browser DevTools extension for debugging Vue.js applications.",
  "manifest_version": 2,
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/16-gray.png",
      "48": "icons/48-gray.png",
      "128": "icons/128-gray.png"
    },
    "default_title": "Vue Devtools",
    "default_popup": "popups/not-found.html"
  },
  "web_accessible_resources": [
    "devtools.html",
    "devtools-background.html",
    "build/backend.js"
  ],
  "devtools_page": "devtools-background.html",
  "background": {
    "scripts": [
      "build/background.js"
    ],
    "persistent": true
  },
  "permissions": [
    "<all_urls>",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "build/hook.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "build/detector.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{f5629cc8-3033-45ee-83d5-d3b5899e9ee9}"
    }
  }
}