Examine source code of Epic Games Library Extension

{
  "manifest_version": 2,
  "name": "Epic Games Library Extension",
  "description": "Show library of owned games in Epic Games Store.",
  "version": "0.1.1",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "64": "icon/64.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "storage",
    "https://*.epicgames.com/*"
  ],
  "commands": {
    "toggleDialog": {
      "description": "Toggle the dialog",
      "suggested_key": {
        "default": "Alt+G",
        "mac": "Command+G"
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.epicgames.com/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f30e4532-872d-4f42-b491-4a3397a6d198}"
    }
  }
}