Examine source code of Proxy Line

{
  "manifest_version": 3,
  "name": "Proxy Line",
  "version": "1.0.0",
  "description": "Proxy Line Chrome extension",
  "icons": {
    "16": "src/assets/icon.png",
    "32": "src/assets/icon.png",
    "48": "src/assets/icon.png",
    "128": "src/assets/icon.png"
  },
  "action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "src/assets/icon.png",
      "32": "src/assets/icon.png"
    }
  },
  "permissions": [
    "storage",
    "proxy",
    "webRequest",
    "webRequestBlocking"
  ],
  "host_permissions": [
    "<all_urls>",
    "https://webapi.proxyapis.com/*"
  ],
  "background": {
    "scripts": [
      "assets/background.ts-Bdc5ef7o.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "proxy-line@proxyline.net",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}