Examine source code of Click Copy Sentence

{
  "manifest_version": 2,
  "name": "Click Copy Sentence",
  "description": "Automatically copy the current sentence upon clicking on a word. Intended as a companion app to FreeLanguageTools/ssmtool.",
  "version": "0.1.3",
  "homepage_url": "https://github.com/FreeLanguageTools/ssmtool",
  "icons": {
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "js": [
        "browser-polyfill.min.js",
        "jquery-3.6.0.min.js",
        "content-script.js"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "browser_action": {
    "browser_style": true,
    "default_popup": "menu.html",
    "default_icon": "icons/48-grayscale.png"
  }
}