Examine source code of Steam Friends Enhancer

{
  "name": "Steam Friends Enhancer",
  "version": "0.0.5",
  "manifest_version": 2,
  "description": "Improve steam friends experience",
  "icons": {
    "128": "./static/icon-128px.png"
  },
  "content_scripts": [
    {
      "run_at": "document_end",
      "matches": [
        "*://steamcommunity.com/*/*/friends*"
      ],
      "js": [
        "./js/content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "/js/background.js"
    ],
    "persistent": false
  },
  "web_accessible_resources": [
    "/js/injected.js"
  ],
  "permissions": [
    "*://steamcommunity.com/*/*/friends*"
  ]
}