Examine source code of TraceGraph

{
  "name": "TraceGraph",
  "short_name": "trace graph",
  "version": "0.2.9",
  "manifest_version": 2,
  "description": "tracing docuverse",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    },
    "default_title": "trace"
  },
  "permissions": [
    "tabs",
    "http://*/*",
    "https://*/*",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "script.js"
      ],
      "all_frames": false,
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{97e36677-6e2d-41ae-b610-a3048fd41f48}",
      "strict_min_version": "55.0"
    }
  }
}