Examine source code of copy-with-ref

{
  "manifest_version": 2,
  "name": "selection-to-clipboard-with-ref",
  "description": "Copying with current ref to the Clipboard",
  "version": "1.1",
  "homepage_url": "https://github.com/Softwaremanufaktur/create-with-ref",
  "icons": {
    "48": "icons/clipboard-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "copy-with-ref-amo@christian-abele.de",
      "strict_min_version": "48.0"
    }
  }
}