Examine source code of Sorarext

{
  "manifest_version": 2,
  "name": "Sorarext",
  "version": "1.2",
  "description": "Add specific soaraedata search",
  "permissions": [
    "contextMenus"
  ],
  "icons": {
    "48": "icons/foot.png"
  },
  "background": {
    "scripts": [
      "sorarext.js"
    ]
  }
}