Examine source code of Click Define

{
  "manifest_version": 3,
  "name": "Click Define",
  "version": "0.4.3",
  "description": "Double-click (or long-press on Android) any word for instant definitions, pronunciation, synonyms, antonyms, and base-word jumps in any language.",
  "author": "HalfToast",
  "homepage_url": "https://github.com/HalfToast/click-def",
  "browser_specific_settings": {
    "gecko": {
      "id": "click-define@halftoast.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://en.wiktionary.org/*",
    "https://api.dictionaryapi.dev/*",
    "https://api.datamuse.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  }
}