Examine source code of GitHub Downloads

{
  "manifest_version": 2,
  "name": "GitHub Downloads",
  "version": "1.1.1",
  "description": "See the number of downloads next to releases on GitHub",
  "author": "Samuel Meuli",
  "homepage_url": "https://github.com/samuelmeuli/activity-hub",
  "permissions": [
    "*://api.github.com/repos/*"
  ],
  "icons": {
    "48": "./icons/icon-48.png",
    "128": "./icons/icon-128.png",
    "512": "./icons/icon-512.png",
    "1024": "./icons/icon-1024.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.github.com/*/releases*"
      ],
      "js": [
        "./main.js"
      ]
    }
  ]
}