Examine source code of PR Sidebar

{
  "manifest_version": 2,
  "name": "PR Sidebar",
  "version": "1.0",
  "description": "Lists your open GitHub pull requests in the Firefox sidebar. Talks only to api.github.com with a read-only token.",
  "author": "Daniel Nash",
  "permissions": [
    "storage",
    "tabs",
    "https://api.github.com/*"
  ],
  "icons": {
    "16": "icon.svg",
    "32": "icon.svg",
    "48": "icon.svg",
    "128": "icon.svg"
  },
  "sidebar_action": {
    "default_title": "Open PRs",
    "default_panel": "panel.html",
    "default_icon": "icon.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "my-prs-sidebar@danielnash",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ]
      }
    }
  }
}