Examine source code of Corser

{
  "manifest_version": 2,
  "name": "Corser",
  "version": "0.0.16resigned1",
  "description": "Allows to manage cors restrictions",
  "author": "Mikhail Vyrtsev",
  "developer": {
    "name": "Mikhail Vyrtsev",
    "url": "https://github.com/Reeywhaar/corser"
  },
  "background": {
    "scripts": [
      "main.js"
    ]
  },
  "icons": {
    "128": "icon.png"
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "options_ui": {
    "browser_style": true,
    "page": "options.html"
  },
  "applications": {
    "gecko": {
      "id": "{a7984014-36a1-484d-b759-435643728580}",
      "strict_min_version": "54.0"
    }
  }
}