Examine source code of Fleetyards Sync

{
  "manifest_version": 2,
  "name": "fleetyards-sync",
  "description": "Browser Extension for syncing pledge data from https://robertsspaceindustries.com to https://fleetyards.net",
  "version": "1.2.3",
  "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"
  },
  "homepage_url": "https://fleetyards.net",
  "permissions": [
    "cookies",
    "https://robertsspaceindustries.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.fleetyards.dev/*",
        "*://*.fleetyards.net/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{5a0fc547-124c-494c-961a-73a605636482}"
    }
  }
}