Examine source code of Highlight

{
  "manifest_version": 2,
  "name": "Highlight by Trix",
  "description": "Highlight text on websites with a simple right-click or keyboard shortcut. Saves highlights on your device.",
  "version": "4.0.3",
  "icons": {
    "48": "images/48.png",
    "128": "images/128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "images/16.png",
      "48": "images/48.png",
      "128": "images/128.png"
    },
    "default_popup": "src/popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "lib/jquery-3.6.0.js",
        "src/utils/storageManager.js",
        "src/utils/highlight.js",
        "src/utils/highlightV3.js",
        "src/utils/highlightV4.js",
        "src/utils/highlight_legacy.js",
        "src/utils/errorManager.js",
        "src/hoverTools/hoverTools.js",
        "src/contentScripts/loadHighlights.js",
        "src/contentScripts/highlighterCursor.js"
      ],
      "css": [
        "src/hoverTools/hoverTools.css"
      ],
      "all_frames": true
    }
  ],
  "background": {
    "page": "background.html",
    "persistent": false
  },
  "commands": {
    "execute-highlight": {
      "suggested_key": {
        "default": "Alt+A",
        "mac": "Alt+A"
      },
      "description": "Highlight selected text"
    }
  },
  "permissions": [
    "contextMenus",
    "scripting",
    "storage",
    "activeTab",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "images/*.png",
    "images/*.svg",
    "src/hoverTools/hoverTools.html"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "trix@highlight"
    }
  }
}