Examine source code of Sublime

{
  "name": "Sublime",
  "version": "1.8.3",
  "description": "Collect and connect anything interesting you find on the Internet",
  "homepage_url": "https://sublime.app",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox@sublime.app"
    }
  },
  "minimum_chrome_version": "100",
  "icons": {
    "128": "assets/logo.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "contextMenus",
    "alarms",
    "scripting"
  ],
  "optional_permissions": [
    "<all_urls>",
    "webRequest"
  ],
  "background": {
    "type": "module",
    "scripts": [
      "background/events.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script/index.js"
      ],
      "css": [
        "content-script/highlights.css"
      ]
    }
  ],
  "action": {
    "default_title": "Add link to Sublime"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+S",
        "mac": "MacCtrl+S"
      },
      "description": "Add a link or highlight to Sublime"
    },
    "show-related-cards": {
      "suggested_key": {
        "default": "Alt+R",
        "mac": "MacCtrl+R"
      },
      "description": "Show related Sublime cards for a link or highlight"
    },
    "take-screenshot": {
      "suggested_key": {
        "default": "Alt+E",
        "mac": "MacCtrl+E"
      },
      "description": "Take a screenshot and save it to Sublime"
    },
    "show-insights": {
      "suggested_key": {
        "default": "Alt+I",
        "mac": "MacCtrl+I"
      },
      "description": "Show insights about your Sublime activity"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "inject/*",
        "content-script/*",
        "assets/*",
        "vendor/pdfjs/*",
        "pdf",
        "pdf.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}