Examine source code of Reddit to WayBack Machine

{
  "name": "__MSG_appName__",
  "description": "__MSG_appDescription__",
  "version": "2.0.0",
  "short_name": "__MSG_appShortName__",
  "manifest_version": 2,
  "default_locale": "en",
  "icons": {
    "16": "images/icon-16.png",
    "128": "images/icon-128.png"
  },
  "permissions": [
    "*://*.reddit.com/*",
    "*://web.archive.org/*",
    "storage",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "page_action": {
    "default_title": "__MSG_actionTitle__",
    "default_popup": "html/settings.html",
    "default_icon": "images/icon-128.png",
    "show_matches": [
      "*://*.reddit.com/*",
      "https://web.archive.org/*"
    ]
  },
  "options_ui": {
    "page": "html/settings.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1b1d1d45-0a65-4d3e-a72a-9f7b9c2b038e}"
    }
  }
}