Examine source code of Stackgo

{
  "manifest_version": 2,
  "name": "Stackgo",
  "version": "1.5resigned1",
  "description": "Redirects hackage package page to the latest version of Stackage page",
  "icons": {
    "48": "icons/stackage-48.png",
    "96": "icons/stackage-96.png",
    "128": "icons/stackage-128.png"
  },
  "permissions": [
    "webRequest",
    "*://hackage.haskell.org/package/*",
    "*://*.stackage.org/haddock/lts*",
    "*://*.stackage.org/package/*",
    "webRequestBlocking",
    "tabs",
    "storage"
  ],
  "options_ui": {
    "page": "settings/options.html"
  },
  "background": {
    "scripts": [
      "stackage.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bf16104d-6d4f-43d0-98ef-f7793e568b24}"
    }
  }
}