Examine source code of ReviewA

{
  "name": "ReviewA",
  "version": "0.0.5",
  "manifest_version": 2,
  "description": "Check if an item contains fake reviews",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "js": [
        "init.js"
      ],
      "matches": [
        "*://*.reviewa.eu/*",
        "*://*.amazon.de/*",
        "*://*.amazon.com/*",
        "*://*.amazon.co.uk/*",
        "*://*.amazon.sg/*",
        "*://*.amazon.es/*",
        "*://*.amazon.fr/*",
        "*://*.amazon.se/*",
        "*://*.amazon.it/*",
        "*://*.amazon.pl/*",
        "*://*.amazon.nl/*",
        "*://*.amazon.cn/*",
        "*://*.amazon.in/*",
        "*://*.amazon.ae/*",
        "*://*.amazon.ca/*",
        "*://*.amazon.com.mx/*",
        "*://*.amazon.com.au/*",
        "*://*.amazon.com.tr/*",
        "*://*.amazon.com.br/*",
        "*://*.amazon.co.jp/*"
      ]
    }
  ]
}