Examine source code of WordReference Peek

{
  "manifest_version": 3,
  "name": "WordReference Peek",
  "author": "Almiinh",
  "homepage_url": "https://github.com/Almiinh/wordreference-peek",
  "version": "0.1",
  "description": "Peek at some word on a WordReference",
  "permissions": [
    "menus",
    "activeTab",
    "downloads"
  ],
  "host_permissions": [
    "*://*.wordreference.com/*"
  ],
  "icons": {
    "32": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.wordreference.com/*"
      ],
      "js": [
        "exportHistory.js"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "peek.js"
      ],
      "exclude_matches": [
        "https://www.wordreference.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "wordreferencepeek@almiinh",
      "strict_min_version": "109.0"
    }
  }
}