Examine source code of github-nokeybindings

{
  "description": "Disables keybindings on GitHub",
  "manifest_version": 2,
  "name": "github-nokeybindings",
  "version": "1.1",
  "homepage_url": "https://github.com/mattiasb/firefox-github-nokeybindings",
  "content_scripts": [
    {
      "matches": [
        "*://*.github.com/*"
      ],
      "js": [
        "nokeys.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@github-nokeybindings",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}