Examine source code of Mighty GitHub PRs

{
  "name": "Mighty GitHub PRs",
  "version": "1.1.1",
  "description": "Restyle Pull Request screen for easier navigation and more focused review sessions.",
  "manifest_version": 2,
  "icons": {
    "48": "mighty-github-icon-48x48.png",
    "128": "mighty-github-icon-128x128.png",
    "192": "mighty-github-icon-192x192.png"
  },
  "browser_action": {
    "default_icon": {
      "48": "mighty-github-icon-48x48.png",
      "128": "mighty-github-icon-128x128.png",
      "192": "mighty-github-icon-192x192.png"
    }
  },
  "permissions": [
    "tabs",
    "contextMenus",
    "*://*.github.com/*"
  ],
  "optional_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "webext-permissions-events-polyfill.js",
      "webext-dynamic-content-scripts.js",
      "webext-domain-permission-toggle.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.github.com/*"
      ],
      "css": [
        "pr-optimizer.css"
      ],
      "js": [
        "pr-optimizer.js"
      ]
    }
  ]
}