Examine source code of GitHub Search Prefix Plugin

{
  "manifest_version": 3,
  "name": "GitHub Search Prefix Plugin",
  "description": "An extension to enhance GitHub search capabilities by allowing for a prefix to the search. This is useful for people working in organizations that utilize GitHub Enterprise access through github.com directly. Using this plugin, you can prefix searches with your organization's identifier, e.g. org:my-company so you don't have to search the current repo by default.",
  "version": "1.0.1",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://github.com/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "github-search-prefix-plugin@doublerambo"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*"
      ],
      "js": [
        "github-search-plugin.js"
      ],
      "run_at": "document_idle"
    }
  ]
}