Examine source code of Teddit Extension

{
  "manifest_version": 2,
  "name": "Teddit Extension",
  "version": "1.0",
  "description": "Unofficial Teddit extension - redirects reddit links to teddit",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://reddit.com/*",
    "*://www.reddit.com/*",
    "*://np.reddit.com/*",
    "*://new.reddit.com/*",
    "*://amp.reddit.com/*",
    "*://old.reddit.com/*"
  ]
}