Examine source code of Postgres Docs Redirect

{
  "manifest_version": 2,
  "name": "Postgres Docs Redirect",
  "description": "Automatically redirects to latest postgreSQL documentation when a docs page is requested",
  "author": "Tommaso Amici",
  "version": "1.2.1",
  "icons": {
    "64": "icon.png",
    "128": "icon128.png"
  },
  "page_action": {
    "default_icon": "icon.png",
    "default_title": "Postgres docs page",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "browser-wrapper.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.postgresql.org/docs/*"
      ],
      "js": [
        "browser-wrapper.js",
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "*://postgresql.org/docs/*",
    "webRequest",
    "webRequestBlocking",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "postgres@docs.redirect",
      "strict_min_version": "60.0"
    }
  }
}