Examine source code of PasteArmor

{
  "manifest_version": 2,
  "name": "PasteArmor",
  "version": "1.0",
  "description": "Paste Armor is a security tool that defend you against paste-hijacking (also known as copy-paste-hijacking, clipboard-hijacking, ...)",
  "homepage_url": "https://github.com/hrmt2000/paste-armor",
  "applications": {
    "gecko": {
      "id": "hr.mt2000@gmail.com"
    }
  },
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "permissions": [],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "pastearmor-contentscript.js"
      ]
    }
  ]
}