Examine source code of Search Highlighter

{
  "version": "0.1.6",
  "manifest_version": 3,
  "name": "Search Highlighter",
  "homepage_url": "https://mybrowseraddon.com/search-highlighter.html",
  "description": "Search and highlight keywords in any webpage via toolbar popup.",
  "permissions": [
    "storage",
    "activeTab",
    "scripting"
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "109.0",
      "id": "{5d62ba31-8448-47ae-b252-2fea1025b9a9}"
    }
  },
  "background": {
    "scripts": [
      "lib/config.js",
      "lib/chrome.js",
      "lib/runtime.js",
      "lib/common.js"
    ]
  },
  "action": {
    "default_title": "Search Highlighter",
    "default_popup": "data/popup/popup.html",
    "default_icon": {
      "16": "data/icons/16.png",
      "32": "data/icons/32.png",
      "48": "data/icons/48.png",
      "64": "data/icons/64.png"
    }
  },
  "commands": {
    "search-highlighter": {
      "description": "Search Highlighter",
      "suggested_key": {
        "mac": "Alt+Shift+F",
        "default": "Alt+Shift+F"
      }
    }
  },
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png"
  }
}