Examine source code of Workflowy Clipper

{
  "name": "Clip To Workflowy",
  "version": "3.1.4",
  "description": "Bookmark websites in Workflowy",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "clipper@workflowy.com",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "browsingActivity",
          "websiteContent"
        ]
      }
    }
  },
  "action": {
    "default_icon": "icons/icon-128.png",
    "default_title": "Clip To Workflowy",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "chrome_shim.js",
      "background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "scripting",
    "menus",
    "clipboardRead",
    "alarms"
  ],
  "host_permissions": [
    "https://workflowy.com/*",
    "https://*.workflowy.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://workflowy.com/*",
        "https://*.workflowy.com/*"
      ],
      "js": [
        "chrome_shim.js",
        "cursor_tracker.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://workflowy.com/api-key/*",
        "https://workflowy.com/api-key"
      ],
      "js": [
        "chrome_shim.js",
        "token_sniffer.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "cursor_tracker_main.js"
      ],
      "matches": [
        "https://workflowy.com/*",
        "https://*.workflowy.com/*"
      ]
    }
  ],
  "options_ui": {
    "page": "popup.html",
    "open_in_tab": true
  },
  "commands": {
    "1-default-destination": {
      "description": "Clip to default destination",
      "suggested_key": {
        "default": "Alt+Shift+D"
      }
    },
    "2-clip-cursor": {
      "description": "Clip to cursor (API)",
      "suggested_key": {
        "default": "Alt+C"
      }
    },
    "3-clip-clipboard": {
      "description": "Clip to clipboard (OPML)",
      "suggested_key": {
        "default": "Alt+Shift+C"
      }
    },
    "4-repeat-last": {
      "description": "Repeat last clip action",
      "suggested_key": {
        "default": "Alt+Shift+R"
      }
    },
    "5-arrange-browser-split": {
      "description": "Side-by-side Browser Tabs",
      "suggested_key": {
        "default": "Alt+Shift+T"
      }
    },
    "6-arrange-windows": {
      "description": "Side-by-side Windows",
      "suggested_key": {
        "default": "Alt+Shift+W"
      }
    }
  }
}