Examine source code of WST Play Enhancer

{
  "manifest_version": 3,
  "name": "WST Play Enhancer",
  "version": "1.0",
  "description": "Enhances WST Play video playback.",
  "homepage_url": "https://github.com/swpease/WSTPlayEnhancer",
  "browser_specific_settings": {
    "gecko": {
      "id": "WSTPlayEnhancer@somethingelse.com",
      "strict_min_version": "109.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.wst.tv/*"
      ],
      "js": [
        "content_scripts/content_script_browse.js",
        "content_scripts/content_script_storage.js"
      ]
    }
  ],
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png"
    },
    "default_title": "WST Play Enhancer",
    "default_popup": "popup/popup.html"
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon48@2x.png"
  },
  "permissions": [
    "storage"
  ]
}