Examine source code of Telegram Web Link Handler

{
  "manifest_version": 2,
  "name": "Telegram Link Handler",
  "version": "0.1",
  "description": "Opens t.me Telegram links in the Telegram web client.\n Limitations: supported only K version of Web client;",
  "permissions": [
    "tabs",
    "activeTab",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "*://web.telegram.org/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "48": "icons/icon.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2d252977-6aa4-497b-909e-6cdc72ea0807}"
    }
  }
}