Examine source code of Mailto Clipboard

{
  "manifest_version": 2,
  "name": "Clipboard Mailto",
  "version": "0.1",
  "description": "Disables opening the mail provider when seeing mailto links and instead copies the mail address to the clipboard",
  "icons": {
    "48": "icons/clipboard-mailto-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "clipboard-mailto.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "clipboard-mailto@alfro.dev",
      "strict_min_version": "109.0"
    }
  }
}